Preface The EQ7 product is designed to drive a three-phase induction motor. Read through this instruction manual to become familiar with proper handling and correct use. Improper handling might result in incorrect operation, shorter life cycle, or failure of this product as well as the motor. Have this Instruction Manual delivered to the end user of this product. Keep this Instruction Manual in a safe place accessible by only people in connection with the VFD until this product is no longer being used.
Table of Contents Safety and Conformity ......................................................................................................... iv Application ............................................................................................................................................................. iv Installation .............................................................................................................................................................. iv Wiring ........
7. Operation Method Configuration (Run / Stop) ............................................................... 7-1 7.1 Run / Stop from the Keypad ............................................................................................................................ 7-1 7.2 Run / Stop from External Switch / Contact or Pushbutton .............................................................................. 7-2 7.3 Run / Stop from Serial Communication – RS485 .............................................
Application • The EQ7 drive is designed to drive a three-phase induction motor. Do not use it for single-phase motors or for other purposes. Fire or an accident could occur. • The EQ7 drive may not be used for a life-support system or other purposes directly related to the human safety. • Though the EQ7 drive is manufactured under strict quality control, install safety devices for applications where serious accidents or property damages are foreseen in relation to the failure of it. An accident could occur.
Wiring • If no zero-phase current (earth leakage current) detective device such as a ground-fault relay is installed in the upstream power supply line in order to avoid the entire power supply system's shutdown undesirable to factory operation, install a residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB) individually to inverters to break the individual inverter power supply lines only. Otherwise, a fire could occur.
• Before changing the switches or touching the control circuit terminal symbol plate, turn OFF the power and wait at least five minutes for inverters of 40 HP or below, or at least ten minutes for inverters of 50 HP or above. Make sure that the LED monitor and charging lamp are turned OFF. Further, make sure, using a multimeter or a similar instrument, that the DC link bus voltage between the terminals P(+) and N(-) has dropped to the safe level (+25 VDC or below). Otherwise, an electric shock could occur.
• Do not touch the heat sink and braking resistor because they become very hot. Doing so could cause burns. • The DC brake function of the inverter does not provide any holding mechanism. Injuries could occur. • Ensure safety before modifying the function code settings. Run commands (e.g., "Run forward" FWD), stop commands (e.g., "Coast to a stop" BX), and frequency change commands can be assigned to digital input terminals.
Conformity with UL standards and CSA standards (cUL-listed for Canada) UL/cUL-listed inverters are subject to the regulations set forth by the UL standards and CSA standards (cULlisted for Canada) by installation within precautions listed below. 1. Solid state motor overload protection (motor protection by electronic thermal overload relay) is provided in each model. Use function codes F10 to F12 to set the protection level. 2. Use Cu wire only. 3. Use Class 1 wire only for control circuits. 4.
Conformity with UL standards and CSA standards (cUL-listed for Canada) (continued) EQ7-2010-C 10 5 EQ7-2015-C 15 7.5 EQ7-2020-C 20 10 EQ7-2025-C 230 V 25 EQ7-2030-C 30 15 EQ7-2040-C 40 20 EQ7-2050-C 50 25 EQ7-2060-C 60 75 30 EQ7-2075-C EQ7-2100-C 100 EQ7-2125-C 125 40 EQ7-2150-C 150 50 CT VT 75 75 30.9 CT (3.5) VT 100 100 CT VT 150 125 CT *1 8 (8.4) *2 *3 6 (13.3) 14 (2.1) 12 (3.3) 12 (3.3) - 8 (8.4) - *1 *2 *3 - 4 (21.2) VT 175 150 CT 51.3 (5.8) VT 200 175 CT 10.6 (1.
EQ7-4010-C 10 5 EQ7-4015-C 15 7.5 EQ7-4020-C 20 25 10 EQ7-4025-C EQ7-4030-C 30 15 EQ7-4040-C 460 V 40 20 EQ7-4050-C 50 25 EQ7-4060-C 60 30 EQ7-4075-C 75 EQ7-4100-C 100 40 CT VT CT VT CT VT CT VT CT VT CT VT CT VT CT VT CT VT CT VT 30 40 40 60 50 70 60 90 75 30.9 (3.5) - - *1 10 (5.3) 12 (3.3) *2 *3 - 8 (8.4) - 51.3 100 100 (5.8) 6 (13.3) 4 (21.2) 125 125 6 (13.3) 6 (13.3) - 2 3 (33.6) (26.7) 10.6 (1.2) 1/0 (53.5) 250 *2 *3 10 (5.3) 6 (13.3) 14 (2.
350 - VT 600 125 400 450 - 460 V 500 600 700 EQ7-4500-C CT EQ7-4600-C EQ7-4500-C EQ7-4600-C EQ7-4700-C EQ7-4600-C EQ7-4700-C EQ7-4800-C EQ7-4700-C CT VT CT CT VT CT CT VT CT VT CT VT CT 1000 150 150 200 200 - 800 250 900 300 1000 400 EQ7-4800-C EQ7-4900-C EQ7-41000-C 800 424.7 10.6 10.6 (48) (1.2) (1.
Chapter 1 Drive Model Identification It is essential to verify the EQ7 drive nameplate and make sure that the EQ7 drive has the correct rating so it can be used in your application with the proper sized AC motor. Unpack the EQ7 drive and check the following: (1) The EQ7 drive and quick start guide (this document) are contained in the package. The EQ7 DRIVE-2100-C / EQ7 DRIVE-4100-C and higher rated types come with a DC reactor (DCR). Be sure to connect the DCR.
1.
1.2 Installation and wiring practices Mounting of the EQ7 drive is extremely important for accessibility as well as for the environment. Various EQ7 drive models are available and the mounting dimensions (footprint) may be different. Install the EQ7 drive in an environment that satisfies the requirements. TECO-Westinghouse Motor Company strongly recommends installing inverters in a panel for safety reasons, in particular, when installing the ones that have an enclosure rating of IP00.
Storage environment The storage environment in which the inverter is stored after purchase is different from the operation environment. For details, refer to the EQ7 DRIVE User's Manual, Chapter 2. Wiring precautions (1) Route the wiring of the control circuit terminals as far from the wiring of the main circuit as possible. Otherwise electric noise may cause malfunctions.
Precautions for connection of peripheral equipment (1) Phase-advancing capacitors for power factor correction Do not mount a phase-advancing capacitor for power factor correction in the inverter's input (primary) or output (secondary) circuit. Mounting it in the input (primary) circuit takes no effect. To correct the inverter power factor, use an optional DC reactor (DCR). Mounting it in the output (secondary) circuit causes an overcurrent trip, disabling operation.
(5) Molded case circuit breaker (MCCB) or residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB) Install a recommended MCCB or RCD/ELCB (with overcurrent protection) in the primary circuit of the inverter to protect the wiring. Since using an MCCB or RCD/ELCB with a lager capacity than recommended ones breaks the protective coordination of the power supply system, be sure to select recommended ones.
Molded Case Circuit Breaker (MCCB) and Residual- Leakage Circuit Breaker (ELCB) Current-Operated Protective Device (RCD)/Earth Nominal applied motor Power (HP) supply Inverter type voltage Three Singlephase phase 125 EQ7-4125-C 50 EQ7-4150-C 150 200 60 EQ7-4200-C EQ7-4250-C 250 460 V 75 Nominal applied Power motor supply (HP) voltage Three- Singlephase phase Rated current of MCCB and CT/VT RCD/ELCB (A) mode w/ DCR w/o DCR VT CT CT/VT CT CT/VT CT CT/VT 500 200 250 600 300 460 V 350 EQ7-43
• From the system's safety point of view, it is recommended to employ such a sequence that shuts down the magnetic contactor (MC) in the inverter input circuit with an alarm output signal ALM issued on inverter's programmable output terminals. The sequence minimizes the secondary damage even if the inverter breaks. When the sequence is employed, connecting the MC's primary power line to the inverter's auxiliary control power input makes it possible to monitor the inverter's alarm status on the keypad.
(2) If induction or radio noise generated from the inverter affects other devices: - Isolate the main circuit wires from the control circuit wires and other device wires. - Put the main circuit wires through a metal conduit pipe, and connect the pipe to the ground near the inverter. - Install the inverter into the metal panel and connect the whole panel to the ground. - Connect a noise filter to the inverter's power wires. - Decrease the inverter's carrier frequency (F26).
1.3 Precautions in running inverters Precautions for running inverters to drive motors or motor-driven machinery are described below. Motor temperature When an inverter is used to run a general-purpose motor, the motor temperature becomes higher than when it is operated with a commercial power supply. In the low-speed range, the motor cooling effect will be weakened, so decrease the output torque of the motor when running the inverter in the low-speed range.
High-speed motors If the reference frequency is set to 120 Hz or higher to drive a high-speed motor, test-run the combination of the inverter and motor beforehand to check it for the safe operation. Precautions for use on single-phase power An inverter is a device that converts alternating current of the input line to direct current via the ac-to-dc rectifier and then converts it to alternating current via the dc-to-ac switching inverter circuit in order to output the required alternating current.
Chapter 2 Mounting and Wiring the Inverter 2.1 Operating Environment Install the inverter in an environment that satisfies the requirements listed in Table 2.1. Table 2.1 Environmental Requirements Item Site location Table 2.
When employing external cooling In external cooling, the heat sink, which dissipates about 70% of the total heat (total loss) generated into air, is situated outside the equipment or the panel. The external cooling, therefore, significantly reduces heat radiating inside the equipment or panel.
Figure 2.3 Changing the Positions of the Top and Bottom Mounting Bases When changing the positions of the top and bottom mounting bases, use only the specified screws. Otherwise, a fire or accident could occur. (3) Mounting notes The EQ7-2007-C / EQ7-4007-C through EQ7-2040-C / EQ7-4040-C should be mounted with four screws or bolts using screw holes A or B shown below. Note that, at each of the top and bottom of the inverter, the two screws or bolts should be located in a bilaterally symmetrical position.
2.3 Wiring Follow the procedure below. (In the following description, the inverter has already been installed.) 2.3.1 Removing and mounting the front cover and the wiring guide (1) For inverters of 40 HP or below First loosen the front cover fixing screw, slide the cover downward holding both sides, tilt it forward, and then pull it upward, as shown below. While pressing the wiring guide upward, pull it out and forward. After carrying out wiring (see Sections 2.3.2 through 2.3.
2.3.2 Screw specifications and recommended wire sizes (1) Arrangement of main circuit terminals The tables and figures given below show the screw specifications and wire sizes. Note that the terminal arrangements differ depending on the inverter types. In each of the figures, two grounding terminals ( G) are not exclusive to the power supply wiring (primary circuit) or motor wiring (secondary circuit). Use crimp terminals covered with an insulation sheath or with an insulation tube.
Unit: inch (mm) to * Refer Section 2.3.3 (9).
Table 2.
Recommended wire size AWG (mm2) Terminals common to all inverters Auxiliary control power input terminals [R0] and [T0] Remarks 2 HP or above 14 (2.1) Auxiliary fan power input terminals [R1] and [T1] 230 V series with 60 HP or above 460 V series with 125 HP or above (2) Arrangement of control circuit terminals (common to all inverter types) Terminal type Recommended wiring size 2 (mm )* Screw size: M3 (0.7 N·m) 0.75 Spring (screwless) 0.65 to 0.
Before removal of clip-off sections After removal of clip-off sections Wiring Guide (e.g. EQ7-4025-C) (8) In some types of inverters, the wires from the main circuit terminal block cannot be routed straight into the terminal. Route such wires as shown below so that the front cover can be reinstalled. (9) For inverters of 900 and 1000 HP, two L2/S input terminals are arranged vertically to the terminal block.
• When wiring the inverter to the power source, insert a recommended molded case circuit breaker (MCCB) or residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB) (with overcurrent protection) in the path of each pair of power lines to inverters. Use the recommended devices within the recommended current capacity. • Be sure to use wires in the specified size. • Tighten terminals with specified torque. Otherwise, a fire could occur.
2.3.4 Wiring of main circuit terminals and grounding terminals This section shows connection diagrams with the Enable input function used.
*1 Install a recommended molded case circuit breaker (MCCB) or residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB) (with overcurrent protection function) in the primary circuit of the inverter to protect wiring. Ensure that the circuit breaker capacity is equivalent to or lower than the recommended capacity. *2 Install a magnetic contactor (MC) for each inverter to separate the inverter from the power supply, apart from the MCCB or RCD/ELCB, when necessary.
DC reactor terminals P1 and P (+) Connect a DC reactor (DCR) to these terminals for power factor correction. 1) Remove the jumper bar from terminals P1 and P(+). 2) Connect an optional DCR to those terminals. • The wiring length should be 33 ft (10 m) or below. • Do not remove the jumper bar when a DCR is not used. • The EQ7-2100-C / EQ7-4100-C and higher types come with a DCR. Be sure to connect the DCR. • If a PWM converter is connected to the inverter, no DCR is required.
DC link bus terminals P(+) and N(-) Capacity (HP) Braking transistor Built-in DC braking resistor (DBR) Optional devices Braking unit 50 to 1000 None None DC braking resistor (DBR) Devices and terminals Inverter - Braking unit: P(+) and N(-) Braking unit -DBR: P(+) and DB 1) Connecting an optional braking unit or DC braking resistor (DBR) Inverters of 50 HP or above require both a braking unit and DBR. Connect the terminals P(+) and N(-) of a braking unit to those on the inverter.
Fan power supply switching connectors (CN R and CN W) (on inverters of 60 HP or above for 230 V and those of 125 HP or above for 460 V) The standard EQ7 series accepts DC-linked power input in combination with a PWM converter. Inverters of 60 HP or above for 230 V and those of 125 HP or above for 460 V, however, contain AC-driven components such as AC fans.
To remove each of the jumpers, pinch its upper side between your fingers, unlock its fastener, and pull it up. When mounting it, fit the jumper over the connector until it snaps into place. Figure 2.7 Inserting/Removing the Jumpers Main circuit power input terminals L1/R, L2/S, and L3/T (three-phase input) The three-phase input power lines are connected to these terminals.
When connecting a PWM converter with an inverter, do not connect the power supply line directly to terminals R0 and T0. If a PWM is to be connected, insert an isolation transformer or auxiliary B contacts of a magnetic contactor at the power supply side. For connection examples at the PWM converter side, refer to the PWM Converter Instruction Manual. Figure 2.
2.3.5 Wiring for control circuit terminals This section shows connection diagrams with the Enable input function used. In general, the covers of the control signal wires are not specifically designed to withstand a high voltage (i.e., reinforced insulation is not applied). Therefore, if a control signal wire comes into direct contact with a live conductor of the main circuit, the insulation of the cover might break down, which would expose the signal wire to a high voltage of the main circuit.
Table 2.7 lists the symbols, names and functions of the control circuit terminals. The wiring to the control circuit terminals differs depending upon the setting of the function codes, which reflects the use of the inverter. Route wires properly to reduce the influence of noise. Symbol Name Functions [13] Power supply for the potentiometer Power supply (+10 VDC) for an external frequency command potentiometer (Variable resistor: 1 to 5k) The potentiometer of 1/2 W rating or more should be connected.
Classification Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued) Symbol Name Functions - Since low level analog signals are handled, these signals are especially susceptible to the external noise effects. Route the wiring as short as possible (within 66 ft (20 m)) and use shielded wires. In principle, ground the shielded sheath of wires; if effects of external inductive noises are considerable, connection to terminal [11] may be effective. As shown in Figure 2.
Classification Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued) Symbol [EN1] [EN2] Name Functions Enable inputs (1) Turning off the circuit between terminals [EN1] and [PLC] or terminals [EN2] and [PLC] stops the inverter's output transistor. (Safe Torque Off: STO) (2) These terminals are exclusively used for the source mode input and cannot be switched to the sink mode.
Name Programmable logic controller Functions Programmable logic controller [PLC] SINK [PLC] SOURCE Digital input [X1] t o [ X7], [FWD], [REV] SINK +24 VDC Symbol +24 VDC Classification Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued) SOURCE [X1] to [X7], [FWD], [REV] Photocoupler Photocoupler [CM] [CM] (a) With the switch turned to SINK (b) With the switch turned to SOURCE Figure 2.
Symbol Name [Y1] Transistor output 1 [Y2] Transistor output 2 [Y3] Transistor output 3 Functions (1) Various signals such as inverter running, speed/freq. arrival and overload early warning can be assigned to any terminals, [Y1] to [Y4] by setting function code E20 to E24. Refer to Chapter 4, Section 4.2 "Details of Function Codes" for details. (2) Switches the logic value (1/0) for ON/OFF of the terminals between [Y1] to [Y4], and [CMY].
Classification Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued) Symbol Communication Relay output [30A/B/C] Name Alarm relay output (for any error) Functions (1) Outputs a contact signal (SPDT) when a protective function has been activated to stop the motor. Contact rating: 250 VAC, 0.3A, cos = 0.3, 48 VDC, 0.5A (2) Any one of output signals assigned to terminals [Y1] to [Y4] can also be assigned to this relay contact to use it for signal output.
Wiring for control circuit terminals For EQ72125-C, EQ72150-C and EQ74250-C to EQ741000-C (1) As shown in Figure 2.19, route the control circuit wires along the left side panel to the outside of the inverter. (2) Secure those wires to the wiring support, using a cable tie (e.g., Insulok) with 0.15 inch (3.8 mm) or less in width and 0.059 inch (1.5 mm) or less in thickness.
Table 2.8 lists function of each slide switch. Table 2.8 Function of Each Slide Switch Switch Function SW1 Switches the service mode of the digital input terminals between SINK and SOURCE. ▪ This switches the input mode of digital input terminals [X1] to [X7], [FWD] and [REV] to be used as the SINK or SOURCE mode. ▪ The factory default is SINK. SW2 Switches the terminating resistor of RS-485 communications port on the inverter ON and OFF.
2.4 Mounting and Connecting the Keypad The standard keypad TP-G1W-J1 meets UL Type 4 (NEMA4) by itself. On the panel or at a remote site The keypad can be mounted on the panel wall as shown below or installed at a remote site for operation on hand. Mount the keypad with four M3 x 12 screws provided--two fine thread screws and two coarse thread tapping screws. The recommended tightening torque is 6.2 lb-in (0.7 Nm). For panel cutting dimensions, refer to Chapter 11, Section 11.3.2. 0.
2.5 Input Power and Motor Connection Checking prior to powering on Fig.2.23 below shows the electrical connections for the input power and motor terminals for various EQ7 DRIVE models. Verify the input power and motor terminals of the model you are installing. WITH POWER OFF, make the appropriate connections. Make sure to follow good wiring practices and all applicable codes. Ensure that the equipment is grounded properly as shown.
Never connect power supply wires to the EQ7 drive output terminals U, V, and W. Doing so and turning the power ON damages the inverter. Be sure to connect the grounding wires of the EQ7 drive and the motor to the ground electrodes. Otherwise, an electric shock could occur. Check the following before powering on the EQ7 drive. 1) Check that the wiring is correct. Especially check the wiring to the EQ7 drive input terminals L1/R, L2/S and L3/T and output terminals U, V, and W.
Chapter 3 Operation using the Keypad 3.1 LED Monitor, LCD Monitor, and Keys The keypad allows you to start and stop the motor, view various data including maintenance information and alarm information, configure function codes, monitor I/O signal status, copy data, and calculate the load factor. 7-segment LED Monitor Indication units LCD monitor RUN key (forward) Program LED light key Shift key RUN key (reverse) Reset key STOP key UP key Remote/Local key Function/Data key DOWN key Table 3.
Table 3.1 Overview of Keypad Functions (Continued) Item Keys Functions Switches the operation modes of the inverter. Shifts the cursor to the right for entry of a numerical value. Pressing this key after removing the cause of an alarm switches the inverter to Running mode. This key is used to reset settings or screen transition. Programming keys and UP and DOWN keys, which are used to select the setting items or change the function code data.
Type Item Running status Run command source Description (information, condition, and status) FWD Running in the forward rotation REV Running in the reverse rotation STOP No output frequency REM Remote mode LOC Local mode COMM Via communications link (RS-485 (standard, optional), fieldbus option) JOG Jogging mode HAND Via keypad (This item lights also in local mode.) 3.2 Overview of Operation Modes The EQ7 features the following three operation modes. Table 3.
3.3 Running Mode 3.3.1 Running or stopping the motor By factory default, pressing the key starts running the motor in the forward direction and pressing the decelerates the motor to a stop. The in Running and Programming modes. key key is disabled. Running or stopping the motor with the keypad is enabled only To run the motor in reverse direction or run the motor in reversible mode, change the setting of function code F02. For details of function code F02, refer to Chapter 4 "FUNCTION CODES.
(2) When function code E45 (LCD monitor item selection) is set at "1" The LCD monitor displays the output frequency, output current, and calculated torque in a bar chart. (The upper indicators show the unit of values displayed on the LED monitor as detailed in Section 3.3.2. The lower ones show the running status and run command source.
Table 3.4 Items Monitored (Continued) Monitored Items on the LED Monitor Example PID command (Note 1) PID feedback amount (Note 1) PID output (Note 1) Analog input (Note 2) Torque current (Note 3) Magnetic flux command (Note 3) Input watt-hour Unit － － Meaning of Displayed Value PID command/feedback amount transformed to that of physical value of the object to be controlled (e.g., temperature). Refer to function codes E40 and E41 for details.
3.3.3 Monitoring light alarms The EQ7 identifies abnormal states in two categories--Alarm and Light alarm. If the former occurs, the inverter immediately trips; if the latter occurs, the appears on the LED monitor and the "L-ALARM" appears blinking in the operation guide area on the LCD monitor, but the inverter continues to run without tripping. Which abnormal states are categorized as a light alarm ("Light alarm" object) should be defined with function codes H81 and H82 beforehand.
3.4 Programming Mode Programming mode provides you with these functions--setting and checking function code data, monitoring maintenance information and checking input/output (I/O) signal status. These functions can be easily selected with a menu-driven system. Table 3.5 lists menus available in Programming mode. When the inverter enters Programming mode from the second time on, the menu selected last in Programming mode will be displayed. Table 3.
3.4.1 Setting up function codes quickly using Quick Setup -- Menu #0 "Quick Setup" -Menu #0 "Quick Setup" in Programming mode quickly displays and sets up a basic set of function codes specified beforehand. Using Menu #10 "User Setting" adds or deletes function codes to/from the set of function codes registered for Quick Setup by default. The set of function codes registered for Quick Setup is held in the inverter memory (not the keypad).
Basic configuration of screens Figure 3.8 shows the LCD screen transition for Menu #1 "Data Setting." A hierarchy exists among those screens that are shifted in the order of "menu screen," "list of function codes," and "function code data modification screens." On the modification screen of the target function code, you can modify or check its data. Menu screen List of function codes Function code data modification screens Figure 3.
Basic key operation This section gives a description of the basic key operation, following the example of the data changing flow shown below. This example shows how to change F03 data (maximum frequency) from 58.0 Hz to 58.1 Hz. (1) Turn the inverter ON. It automatically enters Running mode. In that mode, press the key to switch to Programming mode and display the menu screen. (2) Move the pointer to "1. DATA SET" with the and keys, then press the key to proceed to a list of function codes.
3.4.3 Checking changed function codes -- Menu #2 "Data Checking" -Menu #2 "Data Checking" in Programming mode allows you to check function codes and their data that has been changed. The function codes whose data has been changed from the factory defaults are marked with an asterisk ( ). Select a function code and press the key to view or change its data. The LCD screen transition from Menu #2 is the same as that from Menu #1 "Data Setting," except a list of function codes as shown below.
Table 3.7 Drive Monitoring Items (Continued) Page # in operation guide 4 5 6 Item Symbol Description PID command value SV PID feedback amount PV The PID command value and PID feedback amount are displayed after conversion to the virtual physical values (e.g., temperature or pressure) of the object to be controlled using function code E40 and E41 data (PID display coefficients A and B).
(3) Press key to establish the desired menu and proceed to a list of monitoring items. ((5) To go back to the menu screen, press key.) Output frequency (before slip compensation) Output frequency (after slip compensation) Output current Output voltage 1/8: Page # in operation guide, means that this page continues to the next page. / (4) Use and keys to select the page on which the desired monitor item is shown. Calculated torque Reference frequency Running status (See Table 3.7.
3.4.5 Checking I/O signal status -- Menu #4 "I/O Checking" -Menu #4 "I/O Checking" in Programming mode allows you to check the I/O states of digital and analog signals. It is used to check the running status during maintenance or test running. Table 3.8 I/O Check Items Page # in operation guide Item 1 Input signals on the control circuit terminals 2 3 4 Symbol FWD, REV, X1 - X7, EN ON/OFF state of input signals on the control circuit terminal block.
Basic key operation (1) Turn the inverter ON. It automatically enters Running mode. In that mode, press the Programming mode and display the menu screen. (2) Move the pointer to "4. I/O CHECK" with the (3) Press the pages). and key to switch to keys. key to establish the selected menu and proceed to a list of I/O check items (consisting of several (4) Use the and keys to select the page on which the desired item is shown, then check the running status information of that item.
I/O signals (option) (in hex.) (See Note 2 given below.) Input signal Output signal Pulse rate signal / PG pulse rate (option) A/B phase signal from reference PG Z phase signal from reference PG A/B phase signal from slave PG Z phase signal from slave PG / Analog I/O signals (option) Input voltage at terminal [32] Input current at terminal [C2] Output voltage at terminal [A0] Output current at terminal [CS] Common operation items To access the target data, switch to the desired page using the and keys.
Chapter 4 Function Codes / Parameters Refer to the user manual for function code descriptions not covered in this section. 4.1 Function Code Tables Function codes enable the EQ7 series of inverters to be set up to match your system requirements. Each function code consists of a 3-letter alphanumeric string. The first letter is an alphabet that identifies its group and the following two letters are numerals that identify each individual code in the group.
Drive control The EQ7 runs under any of the following drive controls. Some function codes apply exclusively to the specific drive control, which is indicated by letters Y (Applicable) and N (Not applicable) in the "Drive control" column in the function code tables given on the following pages.
Change when running Data copying F codes: Fundamental Functions Default setting Drive control F00 Data Protection Y Y 0 Vector Control w/ PG w/o PG Y Y Y F01 N Y 0 Y Y N Y 0 Y N N N Y Y Y2 60.0 60.
Name Data setting range F26 Motor Sound (Carrier frequency) F27 Motor Sound F29 Analog Output [FM1] (Mode selection) F30 F31 (Voltage adjustment) (Function) (Tone) F32 Analog Output [FM2] (Mode selection) F34 F35 (Voltage adjustment) (Function) Variable Torque Models 0.5 to 30HP: 0.75 to 16 KHz 40 to 100HP: 0.75 to 10 KHz 125 to 900HP: 0.75 to 6 KHz 1000HP: 0.75 to 4 KHz Constant Torque Models 0.5 to 75HP: 0.75 to 16 KHz 100 to 125HP: 0.75 to 10 KHz 150 to 700HP: 0.
F37 Load Selection/ Auto Torque Boost/ Auto Energy Saving Operation 1 F38 F39 F40 F41 F42 F43 F44 F50 F51 F52 F80 Data setting range 0: 1: 2: 3: Variable torque load Constant torque load Auto torque boost Auto energy saving (Variable torque load during ACC/DEC) 4: Auto energy saving (Constant torque load during ACC/DEC) 5: Auto energy saving (Auto torque boost during ACC/DEC) Stop Frequency(Detection mode) 0: Detected speed 1: Reference speed (Holding Time) 0.00 to 10.
E01 E02 E03 E04 E05 E06 E07 Name Terminal [X1] Function Terminal [X2] Function Terminal [X3] Function Terminal [X4] Function Terminal [X5] Function Terminal [X6] Function Terminal [X7] Function Data setting range Selecting function code data assigns the corresponding function to terminals [X1] to [X7] as listed below.
E20 E21 E22 E23 E24 E27 Acceleration Time 2 Deceleration Time 2 Acceleration Time 3 Deceleration Time 3 Acceleration Time 4 Deceleration Time 4 Torque Limiter 2-1 Torque Limiter 2-2 Data setting range 0.00 to 6000 s Note: Entering 0.00 cancels the acceleration time, requiring external soft-start and -stop. -300% to 300%; 999 (Disable) -300% to 300%; 999 (Disable) Selecting function code data assigns the corresponding function to terminals [Y1] to [Y5A/C] and [30A/B/C] as listed below.
Data setting range Data copying Name Change when running Code Default setting 70 (1070): Speed valid (DNZS) 71 (1071): Speed agreement (DSAG) 72 (1072): Frequency (speed) arrival signal 3 (FAR3) 76 (1076): PG error detected (PG-ERR) 82 (1082): Positioning completion signal (PSET) 84 (1084): Maintenance timer (MNT) 98 (1098): Light alarm (L-ALM) 99 (1099): Alarm output (for any alarm) (ALM) 101 (1101): Enable circuit failure detected (DECF) 102 (1102): Enable input OFF (EN OFF) 105 (1105): Braking tran
Data setting range E50 Coefficient for Speed Indication 0.01 to 200.00 E51 Display Coefficient for Input 0.000 (Cancel/reset), 0.001 to 9999 Watt-hour Data E54 Frequency Detection 3 (Level) 0.0 to 500.0 Hz E55 Current Detection 3 (Level) 0.00 (Disable); Current value of 1% to 200% of the inverter rated current E56 (Timer) 0.01 to 600.
Data setting range 30 (1030): Force to stop (STOP) (30 = Active OFF, 1030 = Active ON) 32 (1032): Pre-excitation (EXITE) 33 (1033): Reset PID integral and differential components (PID-RST) 34 (1034): Hold PID integral component (PID-HLD) 35 (1035): Select local (keypad) operation (LOC) 39: Protect motor from dew condensation (DWP) 40: Enable integrated sequence to switch to commercial power (50 Hz) (ISW50) 41: Enable integrated sequence to switch to commercial power (60 Hz) (ISW60) 47 (1047): Servo-lock co
Jump Frequency C31 Analog Input Adjustment for [12] (Offset) (Gain) (Filter time constant) (Gain base point) (Polarity) Analog Input Adjustment for [C1] (Offset) (Gain) (Filter time constant) (Gain base point) Terminal [C1] Range Selection C37 C38 C39 C40 C41 C42 C43 C44 C45 C50 C51 C52 C53 0.00 to 500.
P01 P02 P03 P04 P05 P06 P07 P08 P09 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P53 P54 P55 P56 P57 P99 Name Data setting range Motor 1 (No. of poles) 2 to 22 poles (Rated capacity) 0.01 to 1000 kW (when P99 = 0, 2, 3 or 4) 0.01 to 1000 HP (when P99 = 1) (Rated current) 0.00 to 2000 A (Auto-tuning) 0: Disable 1: Tune while the motor stops.
Data Initialization H04 H05 H06 Auto-reset H07 Acceleration/Deceleration Pattern H08 Rotational Direction Limitation H09 Starting Mode H11 H12 Deceleration Mode Instantaneous Overcurrent Limiting (Mode selection) Restart Mode after Momentary Power Failure (Restart time) (Frequency fall rate) H14 H15 H16 H18 H26 H27 H28 H30 H42 H43 H44 H45 H46 H47 H48 Default setting 0: Disable initialization 1: Initialize all function code data to the factory defaults 2: Initialize motor 1 parameters 3: Initi
H50 H51 H52 H53 H54 H55 H56 H57 H58 H59 H60 H61 H63 H64 H65 H66 H67 H68 H69 H70 H71 H72 Data copying H49 Change when running Code Default setting 0.0 to 10.0 s Y Y 0.0 Y Vector Control w/o PG Y Y Y 0.0: Cancel, 0.1 to 500.0 Hz N Y 0.0 Y N N N 0 to 240: Output an AVR-controlled voltage (for 230 V series) 0 to 500: Output an AVR-controlled voltage (for 460 V series) 0.0: Cancel, 0.1 to 500.0 Hz N Y2 0 Y N N N N Y 0.
H74 (Control target) H75 (Target quadrants) H76 (Frequency increment limit for braking) Service Life of DC Link Bus Capacitor (Remaining time) Maintenance Interval (M1) Preset Startup Count for Maintenance (M1) Output Current Fluctuation Damping Gain for Motor 1 Light Alarm Selection 1 Light Alarm Selection 2 Pre-excitation (Initial level) (Time) Reserved *9 Reserved *9 Reserved *9 Reserved *9 Reserved *9 PID Feedback Wire Break Detection Continuity of Running (P) (I) Cumulative Motor Run Time 1 H80 H
A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12 A13 A14 A15 Name Data setting range Maximum Frequency 2 25.0 to 500.0 Hz Base Frequency 2 25.0 to 500.
Data copying A18 Change when running Code 0: Disable 1: Tune while the motor stops. (%R1, %X and rated slip frequency) 2: Tune while the motor is rotating under V/f control (%R1, %X, rated slip frequency, no-load current, magnetic saturation factors 1 to 5, and magnetic saturation extension factors "a" to "c") 3: Tune while the motor is rotating under vector control (%R1, %X, rated slip frequency, no-load current, magnetic saturation factors 1 to 5, and magnetic saturation extension factors "a" to "c.
Change when running Data copying A53 Motor 2 (%X correction factor 1) 0% to 300% Y A54 (%X correction factor 2) 0% to 300% Y Y1 Y2 Y1 Y2 Y1 Y2 Y1 Y2 - Code Name Data setting range A55 (Torque current under vector control) 0.00 to 2000 A N A56 (Induced voltage factor under vector control) Reserved *9 50 to 100 N ― - A57 *7 The motor parameters are automatically set, depending upon the inverter's capacity. See Table B.
J01 J02 Name PID Control (Mode selection) (Remote command SV) J03 J04 J05 J06 J08 J09 J10 J11 P (Gain) I (Integral time) D (Differential time) (Feedback filter) (Pressurization starting frequency) (Pressurizing time) (Anti reset windup) (Select alarm output) J12 J13 J15 J16 J17 J18 J19 J21 (Upper level alarm (AH)) (Lower level alarm (AL)) (Stop frequency for slow flowrate) (Slow flowrate level stop latency) (Starting frequency) (Upper limit of PID process output) (Lower limit of PID process output)
Name d01 Speed Control 1 (Speed command filter) d02 (Speed detection filter) d03 P (Gain) d04 I (Integral time) d06 (Output filter) d07 (Notch filter resonance frequency) d08 (Notch filter attenuation level) d09 Speed Control (Jogging) (Speed command filter) d10 (Speed detection filter) d11 P (Gain) d12 I (Integral time) d13 (Output filter) d14 Feedback Input (Pulse input format) d15 (Encoder pulse resolution) d16 (Pulse count factor 1) d17 (Pulse count factor 2) d21 Speed Agreement/PG Error (Hysteresis wi
d71 Synchronous Operation (Main speed regulator gain) d72 (APR P gain) d73 (APR positive output limiter) d74 (APR negative output limiter) d75 (Z phase alignment gain) d76 (Synchronous offset angle) d77 (Synchronization completion detection angle) d78 (Excessive deviation detection range) d98 Reserved *9 d99 Reserved *9 Data copying Name Change when running Code 0.00 to 1.50 times Y Y 1.00 N Vector Control w/o PG N Y N 0.00 to 200.
Data copying Code Change when running y codes: LINK Functions 1 to 255 N Y 1 Y Vector Control w/o PG Y 0: Immediately trip with alarm er8 1: Trip with alarm er8 after running for the period specified by timer y03 2: Retry during the period specified by timer y03. If the retry fails, trip with alarm er8. If it succeeds, continue to run. 3: Continue to run (Timer) 0.0 to 60.
Inverter capacity HP Auto-restart after momentary power failure H13 Inverter capacity HP 0.5 100 1 125 2 150 3 5 250 300 10 350 15 450 20 500 25 600 40 700 1.0 900 60 1000 1.5 Inverter capacity HP Auto-restart after momentary power failure H13 Inverter capacity HP 0.5 100 1 125 2 150 3 5 250 300 10 350 15 450 20 500 25 600 30 700 1.0 4.0 5.0 Auto-restart after momentary power failure H13 1.5 2.0 2.5 4.0 800 50 900 60 1000 75 2.5 200 0.
Table B Motor Parameters When the "HP rating motors" is selected with P99/A39 (data = 1) Three-phase 230 V series (EQ7-2_ _ _-C) 4-24
Table B Motor Parameters (Continued) Three-phase 460 V series (EQ7-4_ _ _-C) .
4.2 Details of Function Codes This section provides the details of the function codes. The descriptions are, in principle, arranged in the order of function code groups and in numerical order. However, highly relevant function codes are collectively described where one of them first appears. 4.2.
Configuring a reference frequency [ 1 ] Using and keys (F01 = 0 (factory default) or 8) (1) Set function code F01 at "0" or "8" ( / keys on keypad). This cannot be done when the keypad is in Programming or Alarm mode. To enable frequency setting using the and keys, first place the keypad in Running mode. (2) Press the or key. The 7-segment LED monitor displays the reference frequency and the LCD monitor displays the related information including the operation guide, as shown below.
The table below lists the available command sources and their symbols.
Gain and bias If F01 = 3 (the sum of [12] + [C1] is enabled), the bias and gain are independently applied to each of the voltage and current inputs given to terminals [12] and [C1], and the sum of the two values is applied as the reference frequency.
In the case of bipolar input (terminal [12] with C35 = 0, terminal [V2] with C45 = 0) Setting C35 and C45 data to "0" enables terminal [12] and [V2] to be used for bipolar input (-10 V to +10 V) respectively. When both F18 (Bias) and C50 (Bias base point) are set to "0," the negative and positive voltage inputs produce reference frequencies symmetric about the origin point as shown below.
Specifying the initial value for the UP/DOWN control Specify the initial value to start the UP/DOWN control. Data for H61 Initial value to start the UP/DOWN control 0 Mode fixing the value at "0": The inverter automatically clears the value to "0" when restarted (including powered ON). Speed up by the UP command.
[ 4 ] Using pulse train input (F01 = 12) The EQ7 can accommodate different types of pulse train inputs. Select the type of signal (d59) and scaling (d62, d63) as described here. Selecting the pulse train input format (d59) A pulse train in the format selected by the function code d59 can give a frequency command to the inverter.
Pulse count factor 1 (d62), Pulse count factor 2 (d63) For the pulse train input, function codes d62 (Command (Pulse rate input), (Pulse count factor 1)) and d63 (Command (Pulse rate input), (Pulse count factor 2)) define the relationship between the input pulse rate and the frequency command (reference).
F02 Operation Method F02 selects the source that specifies a run command. Data for F02 0 1 Run Command Keypad Description Enables the , , and keys to run the motor in the forward and reverse directions, and stop the motor. Terminal command FWD or REV Enables input terminal commands FWD and REV to run the motor in the forward and reverse directions, and stop the motor. 2 Keypad (Forward rotation) Enables the and keys to run the motor in the forward direction and stop it.
F03 Maximum Frequency 1 F03 specifies the maximum frequency to limit the output frequency. Specifying the maximum frequency exceeding the rating of the equipment driven by the inverter may cause damage or a dangerous situation. Make sure that the maximum frequency setting matches the equipment rating. - Data setting range: 25.0 to 500.0 (Hz) • For variable torque mode inverters, set the maximum frequency at 120 Hz or below.
Examples: Normal (linear) V/f pattern V/f pattern with three non-linear points Base Frequency 1 (F04) Data setting range: 25.0 to 500.0 (Hz) Set the rated frequency printed on the nameplate labeled on the motor. Rated Voltage at Base Frequency 1 (F05) Data setting range: 0: Output a voltage in proportion to input voltage (The Automatic Voltage Regulator (AVR) is disabled.
In vector control, current feedback control is performed. In the current feedback control, the current is controlled with the difference between the motor induced voltage and the inverter output voltage. For a proper control, the inverter output voltage should be sufficiently higher than the motor induced voltage. Generally, the voltage difference is about 20 V for 230 V series, about 40 V for 460 V series. The maximum voltage the inverter can output cannot exceed the inverter input voltage.
Under vector control without speed sensor Under vector control with speed sensor Acceleration/deceleration time Acceleration/ deceleration time Acceleration/ deceleration time 1 Acceleration/ deceleration time 2 Acceleration/ deceleration time 3 Acceleration/ deceleration time 4 At jogging operation At forced stop Function code ACC DEC time time Switching factor of acceleration/deceleration time ( Refer to the descriptions of E01 to E07.
Acceleration/Deceleration pattern (H07) H07 specifies the acceleration and deceleration patterns (patterns to control output frequency). Data for H07 0 Acceleration/ deceleration pattern Linear S-curve (Fixed) 1 2 S-curve (Adjustable) Curvilinear 3 Function code Motion The inverter runs the motor with the constant acceleration and deceleration.
Curvilinear acceleration/deceleration Acceleration/deceleration is linear below the base frequency (constant torque) but it slows down above the base frequency to maintain a certain level of load factor (constant output). This acceleration/deceleration pattern allows the motor to accelerate or decelerate with its maximum performance. The figures at left show the acceleration characteristics. Similar characteristics apply to the deceleration.
Electronic Thermal Overload Protection for Motor 1 (Select motor characteristics, Overload detection level, and Thermal time constant) F10 to F12 F10 through F12 specify the thermal characteristics of the motor for its electronic thermal overload protection that are used to detect overload conditions of the motor. Upon detection of overload conditions of the motor, the inverter ceases outputting and issues a motor overload alarm to protect motor 1.
Nominal Applied Motor and Characteristic Factors when P99 (Motor 1 Selection) = 1 or 3 Reference current Nominal applied Thermal time for setting the motor constant thermal time (Factory default) HP constant (Imax) 0.
F14 Restart Mode after Momentary Power Failure (Mode selection) H13 (Restart Mode after Momentary Power Failure (Restart time)) H14 (Restart Mode after Momentary Power Failure (Frequency fall rate)) H15 (Restart Mode after Momentary Power Failure (Continuous running level)) H16 (Restart Mode after Momentary Power Failure (Allowable momentary power failure time)) H92 (Continuity of running (P)) H93 (Continuity of running (I)) F14 specifies the action to be taken by the inverter (trip and restart) in the ev
• Under vector control without speed sensor (F42 = 1 or 5) Data for F14 Description Auto search disabled Auto search enabled 0: Trip immediately As soon as the DC link bus voltage drops below the undervoltage detection level due to a momentary power failure, the inverter issues undervoltage alarm lu and shuts down its output so that the motor enters a coast-to-stop state.
If you enable the "Restart mode after momentary power failure" (Function code F14 = 3, 4, or 5), the inverter automatically restarts the motor running when the power is recovered. Design the machinery or equipment so that personnel safety is ensured after restarting. Otherwise an accident could occur.
During a momentary power failure, the motor slows down. After power is restored, the inverter restarts at the frequency just prior to power failure. Then, the current limiting function works and the output frequency of the inverter automatically decreases. When the output frequency matches the motor speed, the motor accelerates up to the output frequency. See the figure below. (In this case, the instantaneous overcurrent limiting must be enabled (H12 = 1)).
Restart mode after momentary power failure (Allowable momentary power failure time) (H16) H16 specifies the maximum allowable duration (0.0 to 30.0 seconds) from an occurrence of a momentary power failure (undervoltage) until the inverter is to be restarted. Specify the coast-to-stop time which the machine system and facility can tolerate. If the power is restored within the specified duration, the inverter restarts in the restart mode specified by F14.
Factory default: By factory default, H13 is set to a matched value for the standard motor (see Table A in Section 5.1 "Function Code Tables"). Basically, it is not necessary to change H13 data. However, if the long restart time causes deteriorated performance or causes any other problem, reduce the setting to about a half of the default value, ensuring that no alarm occurs.
Even if selecting "Trip after decelerate-to-stop" or "Continue to run," the inverter may not be able to do so when the load's inertia is small or the load is heavy, due to undervoltage caused by a control delay.
F18 Bias (Frequency command 1) F20 to F22 H95 DC Braking 1 (Braking starting frequency, Braking level, and Braking time) DC Braking (Braking response mode) (Refer to F01.) page 4-26 F20 through F22 specify the DC braking that prevents motor 1 from running by inertia during decelerate-to-stop operation.
It is also possible to use an external digital input signal as an "Enable DC braking" terminal command DCBRK. As long as the DCBRK command is ON, the inverter performs DC braking, regardless of the braking time specified by F22. ( Refer to E01 through E07, data =13.) Turning the DCBRK command ON even when the inverter is in a stopped state activates the DC braking.
Starting frequency 1 (Holding time) (F24) Data setting range: 0.00 to 10.00 (s) F24 specifies the holding time for the starting frequency 1. Stop frequency (F25) Data setting range: 0.0 to 60.0 (Hz) F25 specifies the stop frequency at the stop of the inverter. Under V/f control, even if the stop frequency is set at 0.0 Hz, the inverter stops at 0.1 Hz. Stop frequency (Holding time) (F39) Data setting range: 0.00 to 10.00 (s) F39 specifies the holding time for the stop frequency.
The table below shows the conditions for zero speed control to be enabled or disabled.
F26, F27 Motor Sound (Carrier frequency and Tone) H98 (Protection/Maintenance Function (Mode selection)) Motor Sound (Carrier frequency) (F26) F26 controls the carrier frequency so as to reduce an audible noise generated by the motor or electromagnetic noise from the inverter itself, and to decrease a leakage current from the main output (secondary) wirings. Item Characteristics 0.75 to 16 kHz 0.75 to 10 kHz 0.75 to 6 kHz 0.75 0.
F29 to F31 F32, F34, F35 Analog Output [FM1] and [FM2] (Mode selection, Voltage adjustment, Function) These function codes allow terminals [FM1] and [FM2] to output monitored data such as the output frequency and the output current in an analog DC voltage or current. The magnitude of analog voltage or current is adjustable. Mode selection (F29 and F32) F29 and F32 specify the type of signal to terminals [FM1] and [FM2], respectively.
Data for F31/F35 Function (Monitor the following) Speed detected through the PG interface, or estimated speed under vector control without speed sensor [FM1]/[FM2] output 8 PG feedback value (speed) 9 DC link bus voltage 10 Universal AO 13 Motor output 14 Calibration (+) 15 PID command (SV) 16 PID output (MV) 17 Positional deviation in synchronous running Meter scale (Full scale at 100%) Maximum speed as 100% 500 V for 230 V series, 1000 V for 460 V series DC link bus voltage of the inve
V/f characteristics The EQ7 series of inverters offers a variety of V/f patterns and torque boosts, which include V/f patterns suitable for variable torque load such as general fans and pumps and for constant torque load (including special pumps requiring high starting torque). Two types of torque boosts are available: manual and automatic.
• Auto torque boost (F37 = 2, 5) If the auto torque boost is selected, the inverter automatically optimizes the output voltage to fit the motor with its load. Under light load, the inverter decreases the output voltage to prevent the motor from over-excitation. Under heavy load, it increases the output voltage to increase the output torque of the motor.
Related function codes Function code F40 Torque Limiter 1-1 Y Vector control Y F41 Torque Limiter 1-2 Y Y E16 E17 Torque Limiter 2-1 Torque Limiter 2-2 Torque Limiter (Operating conditions) Torque Limiter (Control target) Torque Limiter (Target quadrants) Torque Limiter (Frequency increment limit for braking) Terminal [12] Extended Function Terminal [C1] Extended Function Terminal [V2] Extended Function Y Y Y Y Y Y N N Y Y Y N Y Y Name H73 H74 H75 H76 E61 to E63 V/f control Remarks
Torque limiter levels specified via communications link (S10, S11) The torque limiter levels can be changed via the communications link. Function codes S10 and S11 exclusively reserved for the communications link respond to function codes F40 and F41. Switching torque limiters The torque limiters can be switched by the function code setting and the terminal command TL2/TL1 ("Select torque limiter level 2/1") assigned to any of the digital input terminals.
Under vector control without/with speed sensor (F42 = 5, 6) If the inverter’s output torque exceeds the specified levels of the torque limiters (F40, F41, E16, E17, and E61 to E63), the inverter controls the speed regulator's output (torque command) in speed control or a torque command in torque control in order to limit the motor-generating torque. To use the torque limiters, it is necessary to configure the function codes listed in the table below.
Torque Limiter (Target quadrants) (H75) H75 selects the configuration of target quadrants (Drive/brake, Forward/reverse rotation) in which the specified torque limiter(s) is activated, from "Drive/brake torque limit," "Same torque limit for all four quadrants," and "Upper/lower torque limits" shown in the table below. Data for H75 Target quadrants 0: Drive/brake Torque limiter A applies to driving (both of forward and reverse), and torque limiter B to braking (both of forward and reverse).
Data for H75 Target quadrants Pattern 3 • If the value of torque limiter A is less than that of torque limiter B, torque limiter A applies to both the upper and lower limits. • Selecting the "Upper/lower torque limits" may cause reciprocating oscillation between the upper and lower limit values, depending upon a small difference between the upper and lower limits, a slow response from the speed control sequence, and other conditions.
Torque limiter (Operating conditions) (H73) H73 specifies whether the torque limiter is enabled or disabled during acceleration/deceleration and running at constant speed. Data for H73 During accelerating/decelerating During running at constant speed 0 1 Enable Disable Enable Enable 2 Enable Disable The torque limiter and current limiter are very similar in function. If both are activated concurrently, they may conflict with each other and cause hunting (undesirable oscillation of the system).
F42 Drive Control Selection 1 H68 (Slip Compensation 1 (Operating conditions)) F42 specifies the motor drive control.
Vector control without speed sensor This control estimates the motor speed based on the inverter's output voltage and current to use the estimated speed for speed control. It also decomposes the motor drive current into the exciting and torque current components, and controls each of those components in vector. No PG (pulse generator) interface card is required. It is possible to obtain the desired response by adjusting the control constants (PI constants) using the speed regulator (PI controller).
F43, F44 Current Limiter (Mode selection, Level) H12 (Instantaneous Overcurrent Limiting (Mode selection)) When the output current of the inverter exceeds the level specified by the current limiter (F44), the inverter automatically manages its output frequency to prevent a stall and limits the output current. The default setting of the current limiter is 130% and 160% for VT and CT mode inverters, respectively.
F50 to F52 Electronic Thermal Overload Protection for Braking Resistor (Discharging capability, Allowable average loss and Resistance) These function codes specify the electronic thermal overload protection feature for the braking resistor. Set the discharging capability, allowable average loss and resistance to F50, F51 and F52, respectively. These values are determined by the inverter and braking resistor models.
Allowable average loss (F51) The allowable average loss refers to a tolerance for motor continuous operation, which is obtained based on the %ED (%) and motor rated capacity (HP). Data for F51 0.001 to 99.99 Function 0.001 to 99.99 (kW) During deceleration: Allowable average loss (kW) = %ED(%) ÷ 100 x Motor rated capacity (HP) x 0.75 2 Equation (3) During constant speed operation: Allowable average loss (kW) = %ED(%) ÷ 100 x Motor rated capacity (HP) x 0.
The LD/MD-mode inverter is subject to restrictions on the function code data setting range and internal processing as listed below. Function codes F21* F26 F44 F03* ― Name Variable Torque Constant Torque DC braking Setting range: 0 to 80% (Braking level) Motor sound (Carrier frequency) Setting range: 0.75 to 16 kHz (0.5 to 30 HP) 0.75 to 10 kHz (40 to 100 HP) 0.75 to 6 kHz (125 to 900 HP) 0.
4.2.2 E codes (Extension Terminal Functions) E01 to E07 Terminal [X1] to [X7] Function E98 (Terminal [FWD] Function) E99 (Terminal [REV] Function) E01 to E07, E98 and E99 assign commands (listed below) to general-purpose, programming, digital input terminals, [X1] to [X7], [FWD], and [REV]. These function codes can also switch the logic system between normal and negative to define how the inverter logic interprets the ON or OFF state of each terminal.
Function code data Active ON Active OFF 22 23 1022 1023 24 1024 25 1025 26 1026 30 32 1030 1032 33 1033 34 Terminal commands assigned Symbol V/f Drive control w/o w/ Torque PG PG control Y Y Y N N Y Related function codes IL Hz/TRQ Y N LE Y Y Y Y H30, y98 U-DI Y Y Y Y STM Y Y N Y H09, d67 STOP EXITE Y N Y Y Y Y Y N PID-RST Y Y Y N F07, H56 H84, H85 J01 to J19, J56 to J62 1034 Interlock Cancel torque control Enable communications link via RS-485 or fieldbus
Terminal function assignment and data setting Multi-frequency (0 to 15 steps) --SS1, SS2, SS4, SS8 (Function code data = 0 to 3) The combination of the ON/OFF states of digital input signals SS1, SS2, SS4 and SS8 selects one of 16 different frequency commands defined beforehand by 15 function codes C05 to C19 (Multi-frequency 0 to 15). With this, the inverter can drive the motor at 16 different preset frequencies. Refer to C05 through C19.
Enable DC braking -- DCBRK (Function code data = 13) This terminal command gives the inverter a DC braking command through the inverter’s digital input. (Requirements for DC braking must be satisfied.) Refer to F20 through F22. Select torque limiter level 2/1 -- TL2/TL1 (Function code data = 14) This terminal command switches between torque limiter 1 (F40 and F41) and torque limiter 2 (E16 and E17). Refer to F40 and F41.
• When the motor speed decreases significantly during coast-to-stop (with the current limiter activated): • Secure more than 0.1 second after turning ON the "Switch to commercial power" signal before turning ON a run command. • Secure more than 0.2 second of an overlapping period with both the "Switch to commercial power" signal and run command being ON.
Example of Sequence Circuit Note 1) Emergency switch Manual switch provided for the event that the motor drive source cannot be switched normally to the commercial power due to a serious problem of the inverter Note 2) When any alarm has occurred inside the inverter, the motor drive source will automatically be switched to the commercial power.
Example of Operation Time Scheme Alternatively, set the integrated sequence by which some of the actions above are automatically performed by the inverter itself. For details, refer to the description of ISW50 and ISW60.
Cancel PID control -- Hz/PID (Function code data = 20) Turning this terminal command ON disables the PID control. If the PID control is disabled with this command, the inverter runs the motor with the reference frequency manually set by any of the multi-frequency, keypad, analog input, etc. Terminal command Hz/PID OFF ON Function Enable PID control Disable PID control/Enable manual frequency settings ( Refer to the descriptions of J01 through J19 and J56 through J62.
When the PID control is disabled: The normal/inverse operation selection for the manual reference frequency is as follows.
Force to stop -- STOP (Function code data = 30) Turning this terminal command OFF causes the motor to decelerate to a stop in accordance with the H56 data (Deceleration time for forced stop). After the motor stops, the inverter enters the alarm state with the alarm er6 displayed. ( Refer to the description of F07.) Pre-excitation -- EXITE (Function code data = 32) Turning this terminal command ON activates the pre-exciting feature.
Circuit Diagram and Configuration Main Circuit Configuration of Control Circuit Summary of Operation Input ISW50 or ISW60 Run command OFF (Commercial power) ON OFF ON OFF ON (Inverter) Output (Status signal and magnetic contactor) SW52-1 SW52-2 SW88 52-1 52-2 88 ON OFF OFF OFF ON ON OFF Inverter operation OFF ON OFF Timing Scheme Switching from inverter operation to commercial-power operation ISW50/ISW60: ON OFF (1) The inverter output is shut OFF immediately (Power gate IGBT OFF) (2) The inve
Switching from commercial-power operation to inverter operation ISW50/ISW60: OFF ON (1) The inverter primary circuit SW52-1 is turned ON immediately. (2) The commercial power circuit SW88 is turned OFF immediately. (3) After an elapse of t2 (0.2 sec + time required for the main circuit to get ready) from when SW52-1 is turned ON, the inverter secondary circuit SW52-2 is turned ON. (4) After an elapse of t3 (0.
Examples of Sequence Circuits 1) Standard sequence 2) Sequence with an emergency switching function 4-83
3) Sequence with an emergency switching function --Part 2 (Automatic switching by the alarm output issued by the inverter) Servo-lock command -- LOCK (Function code data = 47) Turning this terminal command ON enables a servo-lock command; turning it OFF disables a servo-lock command. Refer to J97 through J99.
Enable battery operation -- BATRY (Function code data = 59) Turning this terminal command ON cancels the undervoltage protection so that the inverter runs the motor with battery power under an undervoltage condition. When BATRY is assigned to any digital input terminal, the inverter trips after recovery from power failure just as F14 = 1 regardless of F14 setting. When BATRY is ON, the main power down detection is disabled regardless of H72 setting.
Setting CN R (Red) Usage When not using R1 or T1 (Factory default) CN W (White) CN W (White) CN R (Red) When using R1 and T1 (BATRY operation) Figure C: Fan Power Supply Switching Connector About battery operation (when BATRY is ON) (1) The undervoltage protective function (lu ) is deactivated. (2) The inverter can run the motor even under an undervoltage condition. (3) The RDY ("Inverter ready to run") output signal is forcedly turned OFF.
Precautions (1) The battery power supply must be connected before or at the same moment as turning ON of BATRY. (2) As shown in the timing diagram above, battery operation is possible within the battery operation-enabled zone. There is a delay of "T1 + T2" after the BATRY, MC2, and battery power supply are turned ON. (3) The BATRY must not be turned ON when the voltage level is higher than the specified undervoltage level (that is, before the lu appears after a power failure).
E20 to E23 Terminal [Y1] to [Y4] Function E24, E27 Terminal [Y5A/C] and [30A/B/C] Function (Relay output) E20 through E24 and E27 assign output signals (listed on the next page) to general-purpose, programmable output terminals [Y1], [Y2], [Y3], [Y4], [Y5A/C] and [30A/B/C]. These function codes can also switch the logic system between normal and negative to define how the inverter interprets the ON or OFF state of each terminal. The factory default setting is normal logic system "Active ON.
Function code data Active ON Active OFF 22 25 26 27 28 1022 1025 1026 1027 1028 Functions assigned Symbol Inverter output limiting with delay Cooling fan in operation Auto-resetting Universal DO Heat sink overheat early warning IOL2 FAN TRY U-DO OH V/f Y Y Y Y Y Drive Control w/o w/ Torque PG PG control Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Related function codes IOL (5) H06 H04, H05 (See the PG Interface Card instruction manual.
Inverter running -- RUN (Function code data = 0) Inverter output on -- RUN2 (Function code data = 35) These output signals tell the external equipment that the inverter is running at a starting frequency or higher. If assigned in negative logic (Active OFF), these signals can be used to tell the "Inverter being stopped" state. Output signal RUN RUN2 Basic function These signals come ON when the inverter is running.
Universal DO -- U-DO (Function code data = 27) Assigning this output signal to an inverter's output terminal and connecting the terminal to a digital input terminal of peripheral equipment via the RS-485 communications link or the fieldbus, allows the inverter to send commands to the peripheral equipment. The universal DO can also be used as an output signal independent of the inverter operation.
Running forward -- FRUN (Function code data = 52) Running reverse -- RRUN (Function code data = 53) Output signal FRUN RRUN Assigned data 52 53 Running forward ON OFF Running reverse OFF ON Inverter stopped OFF OFF In remote operation -- RMT (Function code data = 54) This output signal comes ON when the inverter switches from local to remote mode. For details of switching between remote and local modes, refer to user Manual Chapter 4, Section 4.2.2 "Remote and local modes.
Enable input OFF -- EN OFF (Function code data = 102) This output signal comes ON when Enable inputs on [EN1] and [EN2] terminals are OFF (opened). See the table below. *1: These signals do not assure detection of all of single failures. (Compliant with EN ISO13849-1 PL=d Cat.
The operation timings of each signal are shown below. E31, E32 Frequency Detection (Level and Hysteresis width) E36, E54 (Frequency Detection 2 and 3 (Level)) When the output frequency (estimated/detected speed) exceeds the frequency detection level specified by E31, the "Frequency (speed) detected signal" comes ON; when it drops below the "Frequency detection level minus Hysteresis width specified by E32," it goes OFF. The following three settings are available.
E34, E35 Overload Early Warning/Current Detection (Level and Timer) E37, F38 (Current Detection 2/Low Current Detection (Level and Timer)) E55, E56 (Current Detection 3 (Level and Timer)) These function codes define the detection level and time for the "Motor overload early warning" OL, "Current detected" ID, "Current detected 2" ID2, "Current detected 3" ID3, and "Low current detected" IDL output signals.
E36 Frequency Detection 2 (Refer to E31.) see page 4-94 E37, E38 Current Detection 2/Low Current Detection (Level and Timer) (Refer to E34.) see page4-95 E40, E41 PID Display Coefficient A, B These function codes specify PID display coefficients A and B to convert a PID command (process command or dancer position command) and its feedback into mnemonic physical quantities to display. - Data setting range: -999 to 0.
Display coefficients for PID dancer position command and its feedback (J01 = 3) Under PID dancer control, the PID command and its feedback operate within the range 100%, so specify the value at +100% of the PID dancer position command or its feedback as coefficient A with E40, and the value at -100% as coefficient B with E41. If the sensor output is unipolar, the PID dancer control operates within the range from 0 to +100%, so virtually specify the value at -100% as coefficient B.
E43 LED Monitor (Item selection) E48 (LED Monitor (Speed monitor item)) E43 specifies the running status item to be monitored and displayed on the LED monitor. Specifying the speed monitor with E43 provides a choice of speed-monitoring formats selectable with E48 (LED Monitor). Monitor item Speed monitor Display sample on the LED monitor Unit Meaning of displayed value Function code E48 specifies what to be displayed on the LED monitor.
E44 LED Monitor (Display when stopped) E44 specifies whether the specified value (data = 0) or the output value (data = 1) to be displayed on the LED monitor of the keypad when the inverter is stopped. The monitored item depends on the E48 (LED monitor, Speed monitor item) setting as shown below.
E46 LCD Monitor (Language selection) E46 specifies the language to display on the keypad (TP-G1W-J1) as follows: E47 Data for E46 Language 0 Japanese 1 2 English German 3 4 French Spanish 5 Italian LCD Monitor (Contrast control) E47 adjusts the contrast of the LCD monitor on the keypad as follows: Data for E47 Contrast 0, 1, 2, 3, 4, 5, 6, 7, 8, Low E48 LED Monitor (Speed monitor item) E50 Coefficient for Speed Indication 9, 10 High (Refer to E43.
E54 Frequency Detection 3 (Level) (Refer to E31.) see page 4-94 E55, E56 Current Detection 3 (Level, Timer) (Refer to E34.
E61 to E63 Terminal [12] Extended Function Terminal [C1] Extended Function Terminal [V2] Extended Function As listed below, under torque control, analog inputs through terminals [12], [C1], and [V2] specify the motor speed limit values. To limit the motor speed to the maximum frequency (F02, A01), apply a full-scale analog input (maximum input). It is recommended that this speed limit function be used together with d35 (Overspeed detection level).
E64 Saving of Digital Reference Frequency E64 specifies how to save the reference frequency specified in digital formats by the as shown below. E65 / keys on the keypad Data for E64 Function 0 Automatic saving when the main power is turned OFF The reference frequency will be automatically saved when the main power is turned OFF. At the next power-on, the reference frequency at the time of the previous power-off applies. 1 Saving by pressing key Pressing the key saves the reference frequency.
E78, E79 E80, E81 Torque Detection 1 (Level and Timer) Torque Detection 2/Low Torque Detection (Level and Timer) E78 specifies the operation level and E79 specifies the timer, for the output signal TD1. E80 specifies the operation level and E81 specifies the timer, for the output signal TD2 or U-TL. Output signal Assigned data TD1 TD2 U-TL 46 47 45 Operation level Range: 0 to 300% E78 E80 E80 Timer Range: 0.01 to 600.
4.2.3 C codes (Control functions) C01 to C03 Jump Frequency 1, 2 and 3 C04 Jump Frequency (Hysteresis width) These function codes enable the inverter to jump over three different points on the output frequency in order to skip resonance caused by the motor speed and natural frequency of the driven machinery (load). - While increasing the reference frequency, the moment the reference frequency reaches the bottom of the jump frequency band, the inverter keeps the output at that bottom frequency.
Multi-frequency 1 to 15 (C05 through C19) Data setting range: 0.00 to 500.00 (Hz) The combination of SS1, SS2, SS4 and SS8 and the selected frequencies are as follows.
C20 Jogging Frequency H54, H55 (Acceleration/Deceleration Time, Jogging) d09 to d13 (Speed Control (Jogging)) To jog or inch the motor for positioning a workpiece, specify the jogging conditions using the jogging-related function codes (C20, H54, H55, and d09 through d13) beforehand, make the inverter ready for jogging, and then enter a run command. Making the inverter ready for jogging Turning ON the "Ready for jogging" terminal command JOG (Function code data = 10) readies the inverter for jogging.
Offset (C31, C36, C41) Data setting range: -5.0 to +5.0 (%) C31, C36 or C41 configures an offset for an analog voltage/current input. The offset also applies to signals sent from the external equipment. Filter time constant (C33, C38, C43) Data setting range: 0.00 to 5.00 (s) C33, C38 or C43 configures a filter time constant for an analog voltage/current input. The larger the time constant, the slower the response.
4.2.4 P codes (Motor 1 Parameters) The EQ7 drives the motor under V/f control, dynamic torque control, vector control without speed sensor, or vector control with speed sensor, which can be selected with function codes.
P04 Motor 1 (Auto-tuning) The inverter automatically detects the motor parameters and saves them in its internal memory. Basically, it is not necessary to perform tuning when using a HP rating motor with a standard connection with the inverter. There are three types of auto-tuning as listed below. Select appropriate one considering the limitations in your equipment and control mode.
P05, A19 Motor 1 / 2 (Online tuning) Long run under "Dynamic torque control" or "Slip compensation control" causes motor temperature change, varying the motor parameters. This changes the motor speed compensation amount, resulting in motor speed deviation from the initial rotating speed. Enabling online tuning identifies motor parameters covering the motor temperature change to decrease the motor speed fluctuation. To perform online tuning enabled with P05/A19, set P04 (Auto-tuning) to "2.
P09 to P11 Motor 1 (Slip compensation gain for driving, Slip compensation response time, and Slip compensation gain for braking) P09 and P11 determine the slip compensation amount in % for driving and braking individually and adjust the slip amount from internal calculation. Specification of 100% fully compensates for the rated slip of the motor. Excessive compensation (P09, P11 100%) may cause hunting (undesirable oscillation of the system), so carefully check the operation on the actual machine.
P53, P54 Motor 1 (%X correction factors 1 and 2) P53 and P54 specify the factors to correct fluctuations of leakage reactance (%X). Basically, there is no need to modify the setting. P55 Motor 1 (Torque current under vector control) P55 specifies the rated torque current under vector control without/with speed sensor. The combination of P99 (Motor 1 selection) and P02 (Motor 1 rated capacity) data determines the standard value. Basically, there is no need to modify the setting.
Chapter 5 Check Motor Rotation and Direction This test is to be performed solely from the EQ7 drive keypad. Apply power to the EQ7 drive after all the electrical connections have been made and protective covers have been re-attached. At this point, DO NOT RUN THE MOTOR, the keypad should display as shown below in Fig. 5.1 and the speed reference 0.00 should be blinking. Important: Motor rotation and direction only applies to standard AC motors with a base frequency of 60Hz. Fig 5.
Chapter 6 Speed Reference Command Configuration The EQ7 Drive offers users several choices to set the speed reference source. The most commonly used methods are described in the next sections. Frequency reference command is selected with parameter F01. F01 Frequency Command 1 This function sets the frequency command source. Setting Range: 0 to 12 To set parameter F01: - Press PRG key, next select QUICK SET or DATA SET with UP/DOWN and keys and press the FUNC/DATA key.
6.
Analog Reference: 0 – 20mA / 4 – 20mA (Setting F01 = 2) Common/0V, T11 Analog Input C1 G Connect shield to ground terminal + 0 – 20mA / 4 – 20mA Note: When using a 0 – 20mA signal set parameter C40 to 1.
6.3 Reference from Serial Communication RS485 Port 2 (H30 = 6 or 8) DX+ Control Terminals / User Terminals DX- SD RS485 Port 2 + Cable Shield RS485 PLC / Computer Connection To set the speed reference for the EQ7 drive via serial communication parameter H30 has be set to either a “4” for frequency command via serial communication only or to “8” for Run Command and Frequency Reference (Frequency Command).
H30 Communications Link Function Set value Frequency command Run command (Run/Stop) 0 F01 / C30 F02 1 Enabled / RS485 (Port 1) F02 2 F01 / C30 Enabled / RS485 (Port 1) 3 Enabled / RS485 (Port 1) Enabled / RS485 (Port 1) 4 Enabled / RS485 (Port 2) F02 5 Enabled / RS485 (Port 2) Enabled / RS485 (Port 1) 6 F01 / C30 Enabled / RS485 (Port 2) 7 Enabled / RS485 (Port 1) Enabled / RS485 (Port 2) 8 Enabled / RS485 (Port 2) Enabled / RS485 (Port 2) Frequency Reference Command Register
Chapter 7 Operation Method Configuration (Run / Stop) The EQ7 Drive offers users several choices to run and stop the drive from different sources. The most commonly used methods are described in the next sections. F02 Operation Method This function sets the operation method (Run/Stop) source. Setting Range: 0 – 3 To set parameter F02: - Press PRG key, next select QUICK SET or DATA SET with UP/DOWN and keys and press the FUNC/DATA key.
7.2 Run/Stop from External Switch / Contact or Pushbutton (F02 = 1) Use an external contact or switch to Run and Stop the EQ7 drive.
Momentary Contacts (Push Buttons) Use push button / momentary switch to Run and Stop the EQ7 drive. F02 Operation Method = 1 E07 Terminal [X7] Function = 6 Forward Command/FWD Common/CM Control Terminals / User Terminals G Connect shield to ground terminal START PUSH BUTTON (Momentary) STOP PUSH BUTTON (Momentary) Note: Stop method can be set with parameter H07, default is ramp to stop.
7.3 Run/Stop from Serial Communication RS485 Port 2 (H30 = 6 or 8) DX+ Control Terminals / User Terminals DX- SD RS485 Port 2 + Cable Shield RS485 PLC / Computer Connection - To Run/Stop (Operation Command) the EQ7 drive via serial communication parameter H30 has be set to either a “6” for Run/Stop via serial communication only or to “8” for Run/Stop (Operation Command) and Frequency Reference (Frequency Command).
H30 Communications Link Function Set value Frequency command Run command (Run/Stop) 0 F01 / C30 F02 1 Enabled / RS485 (Port 1) F02 2 F01 / C30 Enabled / RS485 (Port 1) 3 Enabled / RS485 (Port 1) Enabled / RS485 (Port 1) 4 Enabled / RS485 (Port 2) F02 5 Enabled / RS485 (Port 2) Enabled / RS485 (Port 1) 6 F01 / C30 Enabled / RS485 (Port 2) 7 Enabled / RS485 (Port 1) Enabled / RS485 (Port 2) 8 Enabled / RS485 (Port 2) Enabled / RS485 (Port 2) Command Register EQ7 Drive Command Re
Chapter 8 Motor and Application Specific Settings It is essential that before running the motor, the motor nameplate data matches the motor data in the EQ7 drive. 8.1 Set Motor Name Plate Data (P02, P03, F11) P02 Motor 1 (Capacity) The nominal motor rated capacity is set at the factory. Please verify that the motor name plate data matches the motor rated capacity shown in parameter P02. The setting should only be changed when driving a motor with a different capacity. Range: 0.
8.2 Acceleration and Deceleration Time (F07 / F08) Acceleration and Deceleration times directly control the system dynamic response. In general, the longer the acceleration and deceleration time, the slower the system response, and the shorter time, the faster the response. An excessive amount of time can result in sluggish system performance while too short of a time may result in system instability.
8.3 Torque Boost (F09, Default 0.1) IMPORTANT: PARAMETER IS REQUIRED TO BE CHANGED FOR CONSTANT TORQUE APPLICATIONS. This parameter sets the relationship between output frequency and output voltage. Constant torque applications have the same torque requirements at low speed as well as at high speed. See parameter F37 to select Load Selection / Auto Torque Boost. Initial Setup For variable Torque / Low Duty applications set parameter F09 to an initial value of 1.0.
8.4 Load Selection / Auto Torque Boost / Auto Energy Saving Operation (F27, Default 1) This parameter sets the load type and auto torque boost setting, including auto energy savings. F37 Load Selection / Auto Torque Boost / Auto Energy Saving Operation 1 F37 specifies V/f pattern, torque boost type, and auto energy saving operation in accordance with the characteristics of the load. Specify the torque boost level with F09 in order to assure sufficient starting torque.
When the variable torque V/f pattern is selected (F37 = 0 or 3), the output voltage may be low at a low frequency zone, resulting in insufficient output torque, depending on the characteristics of the motor and load. In such a case, it is recommended to increase the output voltage at the low frequency zone using the non-linear V/f pattern. Recommended value: H50 = 1/10 of the base frequency H51 = 1/10 of the voltage at base frequency Torque boost: Data setting range: 0.0 to 20.
8.5 Reset EQ7 back to Factory Default Parameter H03 Data Initialization H03 initializes the current function code data to the factory defaults or initializes the motor parameters. To change the H03 data, it is necessary to press the Data for H03 + keys or + keys (simultaneous keying). 0 Function Disable initialization (Settings manually made by the user will be retained.
Chapter 9 Using PID Control for Constant Flow / Pressure Applications 9.1 What is PID Control? The PID function in the EQ7 drive can be used to maintain a constant process variable such as pressure, flow, temperature by regulating the output frequency (motor speed). A feedback device (transducer) signal is used to compare the actual process variable to a specified setpoint. The difference between the set-point and feedback signal is called the error signal.
J01 PID control (Mode Select) PID control can be enabled by setting parameter J01 to ‘1’ Setting Range: 0 - 3 1) No operation; PID Operation disabled 2) Forward operation: PID operation enabled, motor speeds increases when feedback signal is smaller than set-point (most fan and pump applications) 3) Reverse operation: PID operation enabled, motor slows down when feedback signal is smaller than set-point (e.g.
Feedback Signal 0 – 10V (E61 = 5) Analog Input, T12 +10Vdc Power, T13 Transducer Output: Black or White: 0 – 10V Transducer Power: Brown or Red: + Control Terminals / User Terminals Common/0V, T11 Transducer Common: Blue or Black: Common G Connect shield to ground terminal - Output + 3-Wire, 0 – 10V Transducer Program Feedback Signal Selection (E61, E62, E63) Use the extended terminal functions to select the analog terminal to use for the feedback transducer.
9.3 Setpoint Scaling / Transducer Feedback Scaling (E40, E41) Use parameter E40 and E41 to scale the EQ7 set-point to the transducer connected. Parameter E40 has to be programmed to the maximum range of the transducer and E41 to the minimum range of the transducer. To set parameter E40, E41 - Press PRG key, next select QUICK SET or DATA SET with UP/DOWN and keys and press the FUNC/DATA key. In the parameter list move cursor to E40, E41 with UP/DOWN keys and press FUNC/DATA key to select.
Chapter 10 Troubleshooting 10.1 Protective Functions The EQ7 series of inverters has various protective functions as listed below to prevent the system from going down and reduce system downtime. The protective functions marked with an asterisk (*) in the table are disabled by default. Enable them according to your needs.
Table 10.
Table 10.1 Abnormal States Detectable ("Alarm" and "Light Alarm" Objects) (Continued) Code Name Light alarm "Alarm" objects "Light alarm" objects -- -- Remarks Ref.
10.2 Before Proceeding with Troubleshooting If any of the protective functions has been activated, first remove the cause. Then, after checking that the all run commands are set to OFF, release the alarm. If the alarm is released while any run commands are set to ON, the inverter may supply the power to the motor, running the motor. Injury may occur.
10.3 If Neither an Alarm Code Nor "Light Alarm" Indication ( ) Appears on the LED Monitor This section describes the troubleshooting procedure based on function codes dedicated to motor 1 which are marked with an asterisk (*). For motors 2, replace those asterisked function codes with respective motor dedicated ones (refer to Chapter 4 of the user manual, Section 5.2.6, and Table 5.5). For the function codes dedicated to motors 2, see Chapter 4 "FUNCTION CODES." 10.3.
Possible Causes What to Check and Suggested Measures (8) A frequency command with higher priority than the one attempted was active. Check the higher priority run command with Menu #2 "Data Checking" and Menu #4 "I/O Checking" using the keypad, referring to the block diagram of the frequency command block (refer to the EQ7 User's Manual, Chapter 6). Correct any incorrect function code data (e.g. cancel the higher priority run command).
Possible Causes What to Check and Suggested Measures (5) The acceleration time was too long or too short. Check the data of function codes F07, E10, E12, and E14 (Acceleration time). Change the acceleration time to match the load. (6) Overload. Measure the output current. Reduce the load. Check whether any mechanical brake is activated. Release the mechanical brake. (7) Function code settings do not agree with the motor characteristics.
Possible Causes What to Check and Suggested Measures (2) An external potentiometer is used for frequency setting. Check that there is no noise in the control signal wires from external sources. Isolate the control signal wires from the main circuit wires as far as possible. Use shielded or twisted wires for control signals. Check whether the external frequency command potentiometer is malfunctioning due to noise from the inverter.
[ 6 ] The motor does not accelerate or decelerate within the specified time. Possible Causes What to Check and Suggested Measures (1) The inverter runs the motor with S-curve or curvilinear pattern. Check the data of function code H07 (Acceleration/deceleration pattern). Select the linear pattern (H07 = 0). Shorten the acceleration/deceleration time (F07, F08, E10 through E15). (2) The current limiting operation prevented the output frequency from increasing (during acceleration).
[ 8 ] The motor abnormally heats up. Possible Causes What to Check and Suggested Measures (1) Excessive torque boost specified. Check whether decreasing the torque boost (F09*) decreases the output current but does not stall the motor. If no stall occurs, decrease the torque boost (F09*). (2) Continuous running in extremely slow speed. Check the running speed of the inverter. Change the speed setting or replace the motor with a motor exclusively designed for inverters. (3) Overload.
10.3.2 Problems with inverter settings [ 1 ] Nothing appears on the LED monitor. Possible Causes What to Check and Suggested Measures (1) No power (neither main power nor auxiliary control power) supplied to the inverter. Check the input voltage and interphase voltage unbalance. Turn ON a molded case circuit breaker (MCCB), a residual-currentoperated protective device (RCD)/earth leakage circuit breaker (ELCB) (with overcurrent protection) or a magnetic contactor (MC).
10.4 If an Alarm Code Appears on the LED Monitor [1] Instantaneous overcurrent Problem The inverter momentary output current exceeded the overcurrent level. Overcurrent occurred during acceleration. Overcurrent occurred during deceleration. Overcurrent occurred during running at a constant speed. Possible Causes What to Check and Suggested Measures (1) The inverter output lines were short-circuited.
[3] Overvoltage Problem The DC link bus voltage was over the detection level of overvoltage. Overvoltage occurred during acceleration. Overvoltage occurred during deceleration. Overvoltage occurred during running at constant speed. Possible Causes What to Check and Suggested Measures (1) The power supply voltage exceeded the inverter's specification range. Measure the input voltage. Decrease the voltage to within the specified range.
(5) Any other loads connected to the same power supply has required a large starting current, causing a temporary voltage drop. Measure the input voltage and check the voltage fluctuation. Reconsider the power supply system configuration. (6) Inverter's inrush current caused the power voltage drop because the power supply transformer capacity was insufficient.
[7] Heat sink overheat Problem Temperature around heat sink has risen abnormally. Possible Causes What to Check and Suggested Measures (1) Temperature around the inverter exceeded the inverter's specification range. Measure the temperature around the inverter. Lower the temperature around the inverter (e.g., ventilate the panel where the inverter is mounted). (2) Ventilation path is blocked. Check if there is sufficient clearance around the inverter.
[ 10 ] Motor protection (PTC/NTC thermistor) Problem Temperature of the motor has risen abnormally. Possible Causes What to Check and Suggested Measures (1) The temperature around the motor exceeded the motor's specification range. Measure the temperature around the motor. Lower the temperature. (2) Cooling system for the motor defective. Check if the cooling system of the motor is operating normally. Repair or replace the cooling system of the motor. (3) Overload. Measure the output current.
[ 12 ] Fuse blown Problem The fuse inside the inverter blew. Possible Causes What to Check and Suggested Measures (1) The fuse blew due to short-circuiting inside the inverter. Check whether there has been any excess surge or noise coming from outside. Take measures against surges and noise. Have the inverter repaired. [ 13 ] Charger circuit fault Problem The magnetic contactor for short-circuiting the charging resistor failed to work.
[ 15 ] Inverter overload Problem Temperature inside inverter has risen abnormally. Possible Causes What to Check and Suggested Measures (1) Temperature around the inverter exceeded the inverter's specification range. Measure the temperature around the inverter. Lower the temperature (e.g., ventilate the panel where the inverter is mounted). (2) Excessive torque boost specified (F09*) Check whether decreasing the torque boost (F09*) does not stall the motor.
[ 17 ] PG wire break Problem The pulse generator (PG) wire has been broken somewhere in the circuit. Possible Causes What to Check and Suggested Measures (1) The wire between the pulse generator (PG) and the option card has been broken. Check whether the pulse generator (PG) is correctly connected to the option card or any wire is broken. Check whether the PG is connected correctly. Or, tighten up the related terminal screws. Check whether any joint or connecting part bites the wire sheath.
[ 20 ] CPU error Problem A CPU error (e.g. erratic CPU operation) occurred. Possible Causes What to Check and Suggested Measures (1) Inverter affected by strong electrical noise. Check if appropriate noise control measures have been implemented (e.g. correct grounding and routing of signal wires, communications cables, and main circuit wires). Implement noise control measures. [ 21 ] Option communications error Problem A communications error occurred between the option card and the inverter.
[ 24 ] Tuning error Problem Auto-tuning failed. Possible Causes What to Check and Suggested Measures (1) A phase was missing (There was a phase loss) in the connection between the inverter and the motor. Properly connect the motor to the inverter. (2) V/f or the rated current of the motor was not properly set. Check whether the data of function codes (F04*, F05*, H50 through H53, H65, H66, P02*, and P03*) matches the motor specifications.
Possible Causes What to Check and Suggested Measures (6) Inverter affected by strong electrical noise. Check if appropriate noise control measures have been implemented (e.g., correct grounding and routing of communications cables and main circuit wires). Implement noise control measures. Implement noise reduction measures on the host side. Replace the RS-485 converter with a recommended insulated one. (7) Terminating resistor not properly configured.
[ 28 ] Speed mismatch or excessive speed deviation Problem An excessive deviation appears between the speed command and the detected speed. Possible Causes What to Check and Suggested Measures (1) Incorrect setting of function code data. Check the following function code data; P01* (Motor (No. of poles)), d15 (Feedback encoder pulse count/rev), and d16 and d17 (Feedback pulse correction factor 1 and 2). Specify data of function codes P01*, d15, d16, and d17 in accordance with the motor and PG.
[ 31 ] PID feedback wire break Problem The PID feedback wire is broken. Possible Causes What to Check and Suggested Measures (1) The PID feedback signal wire is broken. Check whether the PID feedback signal wires are connected correctly. Check whether the PID feedback signal wires are connected correctly. Or, tighten up the related terminal screws. Check whether any contact part bites the wire sheath. (2) PID feedback related circuit affected by strong electrical noise.
[ 36 ] Enable circuit failure Problem The circuit that detects the status of the enable circuit is broken. Possible Causes (1) Contact failure of the interface printed circuit board (PCB). (2) Enable circuit logic error What to Check and Suggested Measures Check that the interface PCB is firmly mounted in place. (Turning the inverter power off and on clears this alarm.) Check that the two output levels of the safety switch or other safety device are not discrepant.
10.6 If an Abnormal Pattern Appears on the LED Monitor except Alarm Codes and "Light Alarm" Indication ( ) [ 1 ] – – – – (center bar) appears Problem A center bar (– – – –) appeared on the LED monitor. Possible Causes What to Check and Suggested Measures (1) When PID control had been disabled (J01 = 0), you changed E43 (LED Monitor (Item selection)) to 10 or 12.
10.7 If the Inverter is Running on Single-Phase Power [ 1 ] The AC fan(s) does not work. (230 V series with 60 HP or above or 460 V series with 125 HP or above) Possible Causes Suggested Measures The power supply is connected to Connect the power supply to L1 and L3. the main circuit power input terminal L2. [ 2 ] _ _ _ _ (under bar) appears Possible Causes Suggested Measures The power supply is connected to the main circuit power input terminal L2 and the main power down detection is activated.
Chapter 11 Specifications 11.1 Drive Ratings 11.1.1 230 V series CT mode designed for constant torque load applications Item Specifications Model EQ7-2XXX-C 0P5 001 002 003 005 007 010 015 020 025 030 040 050 060 075 100 125 150 1/2 1 2 3 5 7.5 7.5 10 15 20 25 30 40 50 60 75 100 125 1/4 1/2 1 1.5 3 3 3 5 7.5 10 10 15 20 25 30 30 40 40 1.2 2.0 3.2 4.4 7.
VT mode designed for variable torque load applications Item Specifications Model EQ7-2XXX-C 0P5 001 002 003 005 007 010 015 020 025 030 040 050 060 075 100 125 150 1/2 1 2 3 5 7.5 10 15 20 25 30 40 50 60 75 100 125 150 1/4 1/2 1 1.5 3 3 5 7.5 10 10 15 20 25 30 30 30 40 50 1.2 2.0 3.2 4.4 7.2 11 13 18 24 30 35 46 58 72 86 113 138 165 46.2 (42) 59.4 (55) 74.
11.1.2 460 V series CT mode designed for constant torque load applications Item Specifications Model EQ7-4XXX-C 0P5 001 002 003 005 007 010 015 020 025 030 040 050 060 075 100 - - 1/2 1 2 3 5 7.5 7.5 10 15 20 25 30 40 50 60 75 - - 1/4 1/2 1 1.5 3 3 3 5 7.5 10 10 15 20 25 30 30 - - 1.2 2.0 3.2 4.4 7.2 11 11 15 20 25 31 36 48 60 73 89 - - 1.5 2.5 4 5.5 9 13.5 13.5 18.5 24.5 32 39 45 60 75 91 112 - - 0.8 1.2 2.
CT mode designed for constant torque load applications Item Specifications Model EQ7-4XXX-C 125 150 200 250 300 350 450 500 600 700 800 900 1000 - - 100 125 150 200 250 300 350 400 450 500 600 800 900 - - 40 50 60 60 75 100 100 125 150 150 200 250 300 - - 120 140 167 202 242 300 330 414 466 518 590 765 932 - - 150 176 210 253 304 377 415 520 585 650 740 960 1170 - - 48 57 68 82 97 118 133 162 184 206 236 305 373 - -
VT mode designed for variable torque load applications Item Specifications Model EQ7-4XXX-C 0P5 001 002 003 005 007 010 015 020 025 030 040 050 060 075 100 - - 1/2 1 2 3 5 7.5 10 15 20 25 30 40 50 60 75 100 - - 1/4 1/2 1 1.5 3 3 5 7.5 10 10 15 20 25 30 30 40 - - 1.2 2.0 3.2 4.4 7.2 11 13.1 18.3 24 29 36 48 60 73 89 120 - - 1.5 2.5 4 5.5 9 13.5 16.5 23 30.5 37 45 60 75 91 112 150 - - 0.8 1.2 2.0 2.4 4.5 6.4 8.
VT mode designed for variable torque load applications Item Specifications Model EQ7-4XXX-C 125 150 200 250 300 350 450 500 600 700 800 900 1000 - - 125 150 200 250 300 350 450 500 600 700 800 900 1000 - - 50 50 60 75 100 100 125 150 200 200 250 300 400 - - 140 167 202 242 300 331 414 518 590 669 765 932 1092 - - 176 210 253 304 377 415 520 650 740 840 960 1170 1370 - - 55 65 78 96 116 128 160 198 229 259 305 368 461
11.2 Common Specifications Item Specifications • 25 to 500 Hz CT-Vector, V/f control *1,*2) Maximum frequency • 25 to 200 Hz (CT-Vector, Vector control w/PG*7) Setting range • 25 to 120 Hz (CT-Vector, sensorless vector control *6, Variable Torque and Constant Torque , various controls,*1 to 7) Base frequency 25 to 500 Hz variable setting (Variable Torque (Model EQ7-x0P5-C or above) and Constant Torque mode : 120Hz) Starting frequency 0.1 to 60.
Item Specifications Remarks • Turning off the circuit between terminals [EN1] and [PLC] or terminals [EN2] and [PLC] stops the inverter's output transistor.
Item Control Remarks PID control • PID adjuster for process control and that for dancer control • Switchable between forward and reverse operations • Low liquid level stop function (pressurized operation possible before low liquid level stop) • PID command: Keypad, analog input (from terminals [12], C1, V2), RS-485 communications • PID feedback value: Analog input (from terminals [12], C1, V2) • Alarm output (absolute value alarm, deviation alarm) • PID output limiter • Integration reset/ho Auto search
Item Specifications Overcurrent protection • The inverter is stopped for protection against overcurrent. Short-circuit protection • The inverter is stopped for protection against overcurrent caused by a short circuit in the output circuit. • The inverter is stopped for protection against overcurrent caused by a grounding fault in the output circuit. (EQ7-x040-C or below).
Item Specifications PID feedback breaking detection • Stop the inverter output detecting a breaking when the input current is allocated to the PID control feedback. (Select valid/invalid.) Alarm relay output (for any fault) • The inverter outputs a relay contact signal when the inverter issues an alarm and stops the inverter output. • The alarm stop state is reset by pressing the PRG/RESET key or by the digital input signal RST.
11.3 External Dimensions 11.3.1 Standard models 40 HP or below Inverter type EQ7-2XXX-C EQ7-4XXX-C 230 V 460 V 0P5 0P5 001 001 002 002 003 003 005 005 007 007 010 010 015 015 020 020 025 025 030 030 040 040 050 050 060 060 075 － 100 75 100 Dimensions inch (mm) W W1 5.91 5.35 (150) (136) 9.84 8.9 (250) (226) 13.98 10.83 (355) (275) 150 － 24.8 11.42 (630) (290) － 150 － 200 － 250 － 300 － 350 － 450 － 500 － 600 － 700 － 800 20.87 16.
Panel cutting of standard model (50 HP or above) 11.3.2 Inverter type EQ7-2_ _ _ EQ7-4_ _ _ Dimensions inch (mm) Refer to: 230V 460V W3 W4 W5 H3 H4 050 050 - 060 12.28 (312) 11.34 (288) 9.45 (240) 20.87 (530) 20.16 (512) 060 - 23.43 (595) 22.72 (577) 25.79 (655) 25.08 (637) 075 12.72 (323) 100 Figure A 13.66 (347) 10.83 (275) H5 B 0.35 (9) M8 075 - 10.83 (275) 100 - 28.35 (720) 125 20.08 (510) 16.93 (430) 16.93 (430) Figure B 25.98 (660) 11.
11.3.3 DC reactor (DCR) Inverter Power type Option/ supply EQ7-2_ _ _ Standard voltage EQ7-4_ _ _ Refer to: W W1 D D1 D2 DCR2-0.4 001 DCR2-0.75 002 DCR2-1.5 003 DCR2-2.2 005 DCR2-3.7 007 DCR2-5.5 Fig.A 010 DCR2-7.5 2.6 (66) 3.39 (86) 2.2 (56) 3.54 (90) 3.15 (80) 3.74 (95) 0.59 (15) 025 DCR2-18.5 030 DCR2-22A 040 DCR2-30B Fig.B 060 DCR2-45C 075 DCR2-55C 100 DCR2-75C 125 150 Standard 4.88 (124) Fig.C 10.040.3 9 (25510) 7.28 (185) 8.
Power Inverter type Option/ supply EQ7-2_ _ _ Standard voltage EQ7-4_ _ _ Reactor F50 DCR4-0.4 001 DCR4-0.75 002 DCR4-1.5 Refer to: Dimensions inch (mm) W W1 D D1 D2 D3 H Mass Mounting Terminal lb (kg) hole hole 0.59 (15) 2.6 (66) 2.2 (56) 3.54 (90) 2.83 (72) 0.04 (1) 3.7 (94) 0.79 (20) 0.2×0.31 (5.2×8) 0.06 (1.4) M4 003 DCR4-2.2 005 DCR4-3.7 007 DCR4-5.5 010 DCR4-7.5 015 460 V Option 3.39 (86) DCR4-15 025 DCR4-18.
Figure A Figure B Figure C Figure D 4x Mounting hole 2x Terminal hole 4x Mounting hole 2x4x Terminal hole Figure E 4x Mounting hole DCR4-630C: 2 x 2 x Terminal hole DCR4-710C: 2 x 4 x Terminal hole 11-16
11.3.4 Standard models with NEMA1 kit (option) Inverter type EQ72_ _ _ / EQ74_ _ _ 230 V 40 HP or below Dimensions inch (mm) 460 V W H D 5.26 (133.5) 0P5 0P5 001 001 002 002 003 003 005 005 007 007 010 010 015 015 020 020 025 025 030 030 040 ― － 040 050 050 12.73 (323.4) 26.97 (685) 10.04 (255) 060 － 14.11 (358.4) 29.92 (760) 10.63 (270) － 060 12.73 (323.4) 26.97 (685) 10.04 (255) 075 － － 075 100 － － 100 125 － 21 (533.4) 37.8 (960) 11.
11.3.5 Keypad (TP-G1W-J1) Drill four screw holes and cut a square hole in a panel as specified below.
