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Bulletin: F-MPM

DWYER INSTRUMENTS, INC.

PO Box 373 • Michigan City IN 46360 USA

Phone: (800) 872-9141

Fax: (219) 872-9057

www.dwyer-inst.com

Series MPM Multi Process Meter

Instruction Manual

 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs

 NEMA 4X, IP65 Front

 Universal 85-265 VAC, or 12/24 VDC Input Power Models

 Large Dual-Line 6-Digit Display, 0.60" & 0.46"

 Dual-Scale for some Level Applications – Single Input

 Sunlight Readable Display Models

 Isolated 24 VDC Transmitter Power Supply

 Signal Input Conditioning for Flow & Round Horizontal Tanks

 Programmable Display & Function Keys

 32-Point, Square Root, or Exponential Linearization

 Multi-Pump Alternation Control

 2 or 4 Relays + Isolated 4-20 mA Output Options

 External 4-Relay & Digital I/O Expansion Modules

 RS-232, RS-485 Serial Communication Options

 Tare Function

 Modbus

RTU Communication Protocol Standard

 Configure, Monitor, and Datalog from a PC with

Free Panel Meter Pro Software

Summary of content (100 pages)

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Bulletin: F-MPM Series MPM Multi Process Meter Instruction Manual                  0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs NEMA 4X, IP65 Front Universal 85-265 VAC, or 12/24 VDC Input Power Models Large Dual-Line 6-Digit Display, 0.60" & 0.
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Multi Process Meter Instruction Manual Disclaimer The information contained in this document is subject to change without notice. Dwyer Instruments, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. ! CAUTION: Read complete instructions prior to installation and operation of the meter. Warning! WARNING: Risk of electric shock or personal injury.
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Multi Process Meter Instruction Manual Table of Contents INTRODUCTION ------------------------------------------------------------ 7 ORDERING INFORMATION --------------------------------------------- 7 SPECIFICATIONS ---------------------------------------------------------- 8 General ------------------------------------------------------------------------------- 8 Process Input -------------------------------------------------------------------- 10 Relays -------------------------------------------------
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Multi Process Meter Instruction Manual Setting the Decimal Point (dEc pt) -------------------------------------- 36 Programming the Meter (prog) ------------------------------------------- 37 Program Menu for Single Scale Process --------------------------- 37 Program Menu for Dual-Scale Level Applications ---------------- 37 Multi-Point Calibration & Scaling -------------------------------------- 38 Panel Meter Pro Software ---------------------------------------------- 38 Scaling the Meter (SCALE) -------
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Multi Process Meter Instruction Manual Setting Up the Password (pass) ------------------------------------------- 65 Protecting or Locking the Meter ------------------------------------------- 65 Making Changes to a Password Protected Meter -------------------- 66 Disabling Password Protection -------------------------------------------- 66 Advanced Features Menu---------------------------------------------------- 67 Advanced Features Menu & Display Messages ---------------------- 68 Noise Filter (filter) -
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Multi Process Meter Instruction Manual Table of Figures Figure 1. 1/8 DIN Panel Cutout Dimensions ..................................... 15 Figure 2. Panel Mounting Details ...................................................... 15 Figure 3. Meter Dimensions - Side View ........................................... 16 Figure 4. Meter Dimensions - Top View ............................................ 16 Figure 5. Jumper Configuration for 12/24 VDC Power .................... 17 Figure 6.
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Multi Process Meter Instruction Manual INTRODUCTION The MPM is a multi-purpose, easy to use digital process meter ideal for level, flow rate, temperature, or pressure transmitter applications. It accepts current and voltage signals (e.g. 4-20 mA, 0-10 V). Three of the front panel buttons can be customprogrammed for a specific operation.
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Multi Process Meter Instruction Manual SPECIFICATIONS Except where noted all specifications apply to operation at +25°C. General DISPLAY Upper display: 0.60" (15 mm) high, red LEDs Second display: 0.46" (12 mm) high, red LEDs 6 digits each (-99999 to 999999), with lead zero blanking DISPLAY INTENSITY Eight user selectable intensity levels. DISPLAY UPDATE RATE 5/second (200 ms). OVERRANGE Display flashes 999999. UNDERRANGE Display flashes -99999.
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Multi Process Meter Instruction Manual NORMAL MODE REJECTION Greater than 60 dB at 50/60 Hz. ISOLATION 4 kV input/output-to-power line 500 V input-to-output or output-to-P+ supply. OVERVOLTAGE CATEGORY Installation Overvoltage Category II: Local level with smaller transient overvoltages than Installation Overvoltage Category III. ENVIRONMENTAL Operating temperature range: -40 to 65°C. Storage temperature range: -40 to 85°C. Relative humidity: 0 to 90% non-condensing.
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Multi Process Meter Instruction Manual Process Input INPUTS ACCURACY TEMPERATURE DRIFT SIGNAL INPUT CONDITIONING MULTI-POINT LINEARIZATION PROGRAMMABLE EXPONENT ROUND H TANK LOW-FLOW CUTOFF DECIMAL POINT CALIBRATION RANGE Field selectable: 0-20, 4-20 mA, 10 V (0-5, 1-5, 0-10 V), Modbus PV (Slave). ±0.03% of calibrated span ±1 count, square root & programmable exponent accuracy . range: 10-100% of calibrated span. 0.005% of calibrated span/C max from 0 to 65C ambient, 0.
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Multi Process Meter Instruction Manual Relays RATING 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A) external; rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads. NOISE SUPPRESSION Noise suppression is recommended for each relay contact switching inductive loads; see page 22 for details. DEADBAND 0-100% of span, user programmable. HIGH OR LOW ALARM User may program any alarm for high or low trip point.
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Multi Process Meter Instruction Manual Isolated 4-20 mA Transmitter Output OUTPUT SOURCE Process variable (PV), max, min, set points 1-8, Modbus input, or manual control mode. SCALING RANGE 1.000 to 23.000 mA for any display range. CALIBRATION Factory calibrated: 4.000 to 20.000 = 4-20 mA output. ANALOG OUT PROGRAMMING 23.000 mA maximum for all parameters: Overrange, underrange, max, min, and break. ACCURACY ± 0.1% of span ± 0.004 mA. TEMPERATURE DRIFT 0.4 µA/C max from 0 to 65C ambient, 0.
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Multi Process Meter Instruction Manual COMPLIANCE INFORMATION Safety UL & c-UL LISTED UL FILE NUMBER FRONT PANEL LOW VOLTAGE DIRECTIVE USA & Canada UL 508 Industrial Control Equipment. E212517 UL Type 4X, NEMA 4X, IP65; panel gasket provided. EN 61010-1:2001 Safety requirements for measurement, control, and laboratory use.
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Multi Process Meter Instruction Manual Note: Testing was conducted on MPM meters installed through the covers of grounded metal enclosures with cable shields grounded at the point of entry representing installations designed to optimize EMC performance. Declaration of Conformity available at www.dwyer-inst.com SAFETY INFORMATION ! CAUTION: Read complete instructions prior to installation and operation of the meter. Warning! WARNING: Risk of electric shock or personal injury.
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Multi Process Meter      Instruction Manual Clearance: allow at least 6.0" (152 mm) behind the panel for wiring. Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm). Recommended minimum panel thickness to maintain Type 4X rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic panel. Remove the two mounting brackets provided with the meter (back-off the two screws so that there is ¼" (6.4 mm) or less through the bracket. Slide the bracket toward the front of the case and remove).
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Multi Process Meter Instruction Manual Mounting Dimensions Figure 3. Meter Dimensions - Side View NO NC C NO NC C NO NC C NO NC C - + R Figure 4.
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Multi Process Meter Instruction Manual Configuration for 12 or 24 VDC Power Option Warning! Do not exceed voltage rating of the selected configuration. Meters equipped with the 12/24 VDC power option are shipped from the factory ready to operate from 24 VDC. To configure the meter for 12 VDC power: 1. Remove all the connectors. 2. Unscrew the back cover. 3. Slide the back cover about 1 inch. 4. Configure the J9 jumper, located behind the power connector, for 12 V as shown below.
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Multi Process Meter Instruction Manual Transmitter Supply Voltage Selection (P+, P-) All meters, including models equipped with the 12/24 VDC power option, are shipped from the factory configured to provide 24 VDC power for the transmitter or sensor. If the transmitter requires 5 or 10 VDC excitation, the internal jumper J4 must be configured accordingly. To access the voltage selection jumper: 1. Remove all the wiring connectors. 2. Unscrew the back cover. 3. Slide out the back cover by about 1 inch. 4.
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Multi Process Meter Instruction Manual Connectors Labeling The connectors’ label, affixed to the meter, shows the location of all connectors available with requested configuration. Warning! Do not connect any equipment other than Dwyer Instruments, Inc.’s expansion modules, cables, or meters to the RJ45 M-LINK connector. Otherwise damage will occur to the equipment and the meter. Figure 7.
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Multi Process Meter Instruction Manual Signal Connections Signal connections are made to a six-terminal connector labeled SIGNAL on Figure 7. The COM (common) terminal is the return for the 4-20 mA and the 10 V input signals. Current and Voltage Connections The following figures show examples of current and voltage connections. There are no switches or jumpers to set up for current and voltage inputs. Setup and programming is performed through the front panel buttons. Figure 9.
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Multi Process Meter Instruction Manual Figure 11. Voltage Input Connections The meter is capable of accepting any voltage from -10 VDC to +10 VDC. Modbus RTU Serial Communications Serial communications connection is made to an RJ45 connector labeled M-LINK on Figure 7. For interfacing to the MPM, use the PMA01 for RS-232, or the PMA-03 for RS-485. The same port is used for interfacing with all expansion modules (e.g. external relays, digital I/O).
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Multi Process Meter Instruction Manual Switching Inductive Loads The use of suppressors (snubbers) is strongly recommended when switching inductive loads to prevent disrupting the microprocessor’s operation. The suppressors also prolong the life of the relay contacts. Suppression can be obtained with resistor-capacitor (RC) networks assembled by the user or purchased as complete assemblies. Refer to the following circuits for RC network assembly and installation: C C R R Figure 13.
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Multi Process Meter Instruction Manual F4 Digital Input Connections A digital input, F4, is standard on the meter. This digital input is connected with a normally open contact across F4 and COM, or with an active low signal applied to F4. Figure 15. F4 Digital Input Connections 4-20 mA Output Connections Connections for the 4-20 mA transmitter output are made to the connector terminals labeled MA OUT. The 4-20 mA output may be powered internally or from an external power supply.
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Multi Process Meter Instruction Manual External Relays & Digital I/O Connections The relay and the digital I/O expansion modules PMA-11 & PMA-12 are connected to the meter using a CAT5 cable provided with each module. The two RJ45 connectors on the expansion modules are identical and interchangeable; they are used to connect additional modules to the system.
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Multi Process Meter 1 2 +5 I1 5 VDC Instruction Manual 3 I2 4 I3 5 6 7 8 9 I4 O1 O2 O3 O4 DI 1-4 DO 1-4 10 G GND Figure 19. Digital I/O Module Connections Interlock Relay Feature As the name implies, the interlock relay feature reassigns one, or more, alarm/control relays for use as interlock relay(s). Interlock contact(s) are wired to digital input(s) and trigger the interlock relay. This feature is enabled by configuring the relay, and relative digital input(s) (see page 62).
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Multi Process Meter Instruction Manual SETUP AND PROGRAMMING The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection. The calibration equipment is certified to NIST standards. Overview There are no jumpers to set for the meter input selection. Setup and programming is done through the front panel buttons. After power and input signal connections have been completed and verified, apply power to the meter.
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Multi Process Meter Instruction Manual Front Panel Buttons and Status LED Indicators Button Symbol Description LED Status Menu 1-8 Alarm 1-8 indicator Right arrow/F1 1-8 M Flashing: Relay in manual control mode Up arrow/F2 T Flashing: Tare Enter/F3 1-8 Flashing: Relay interlock switch open Note: F4 is a digital input. Alarms 5-8 are enabled when relay expansion module is installed.      Note: LEDs for relays in manual mode flash with the “M” LED every 10 seconds.
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Multi Process Meter Instruction Manual Display Functions & Messages The meter displays various functions and messages during setup, programming, and operation. The following table shows the main menu functions and messages in the order they appear in the menu.
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Multi Process Meter Instruction Manual Display intensity Set display intensity level from 1 to 8 Relay Enter the Relay menu RLY 1 Relay 1 Relay 1 setup Act 1 Action 1 Set relay 1 action Auto Automatic Set relay for automatic reset A-nman Auto-manual Set relay for automatic & manual reset any time LatCH Latching Set relay for latching operation Lt-CLr Latchingcleared Set relay for latching operation with manual reset only after alarm condition has cleared Altern Alternate Set relay
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Multi Process Meter Instruction Manual Loop break Set relay condition if loop break detected Ignore Ignore loop break condition (Processed as a low signal condition) On On Relay goes to alarm condition when loop break is detected Off Off Relay goes to non-alarm condition when loop break is detected Analog output Enter the Analog output scaling menu Dis 1 Display 1 Program display 1 value Out 1 Output 1 Program output 1 value (e.g. 4.
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Multi Process Meter Instruction Manual Main Menu The main menu consists of the most commonly used functions: Setup, Reset, Control, and Password.  Press Menu button to enter Programming Mode then press the Up arrow button to scroll main menu.    Press Menu, at any time, to exit and return to Run Mode. Changes made to settings prior to pressing Enter are not saved. Changes to the settings are saved to memory only after pressing Enter/F3.
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Multi Process Meter Instruction Manual Setting Numeric Values The numeric values are set using the Right and Up arrow buttons. Press Right arrow to select next digit and Up arrow to increment digit value. The digit being changed is displayed brighter than the rest. Press and hold up arrow to auto-increment the display value. Press the Enter button, at any time, to accept a setting or Menu button to exit without saving changes. 004.000 004.000 dis 1 Select Next Digit dis 1 005.
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Multi Process Meter Instruction Manual Setting Up the Meter (setup) The Setup menu is used to select: 1. Input signal the meter will accept 2. Dual-scale feature for some level applications 3. Select the display units/tags 4. Decimal point position 5. Programming Menu 6. Display parameter and intensity 7. Relay operation 8. 4-20 mA analog output scaling Press the Enter button to access any menu or press Up arrow button to scroll through choices. Press the Menu button to exit at any time.
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Multi Process Meter Instruction Manual Setting the Input Signal (Input) Enter the Input menu to set up the meter to display current (mA) or voltage (volt) inputs. The current input is capable of accepting any signal from 0 to 20 mA. Select current input to accept 0-20 mA or 4-20 mA signals. The voltage input is capable of accepting any signal from -10 to +10 VDC. Select voltage input to accept 0-5, 1-5, 0-10, or 10 VDC signals.
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Multi Process Meter Instruction Manual Setting the Input Units or Custom Tags (units) Enter the input unit or custom tag that will be displayed if d unit is selected as the lower display parameter. See the flow chart on page 43 to access the display menu to show the unit or tag on the lower display.
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Multi Process Meter Instruction Manual Setting the Decimal Point (dEc pt) The decimal point may be set with up to five decimal places or with no decimal point at all. Pressing the Right arrow moves the decimal point one place to the right until no decimal point is displayed, and then it moves to the leftmost position. Pressing the Up arrow moves the decimal point one place to the left. If the dual-scale level feature is selected, the decimal point selections for PV1 & PV2 are enabled.
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Multi Process Meter Instruction Manual Programming the Meter (prog) It is very important to read the following information, before proceeding to program the meter:  The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection. The calibration equipment is certified to NIST standards.  Use the Scale menu to scale the process input (e.g. 4-20 mA). A calibrated signal source is not needed to scale the meter.
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Multi Process Meter Instruction Manual Multi-Point Calibration & Scaling The meter is set up at the factory for 2-point linear calibration. The number of points for multi-point calibration/scaling is set up in the Advanced Features menu. Up to 32 linearization points may be selected for PV1 and up to 8 linearization points may be selected for PV2. See page 74 for details.
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Multi Process Meter Instruction Manual Dual-Scale for Level Application The analog input can be displayed in two different scales, by enabling the dual-scale feature (d-SCAL) in the Setup-Input menu, see page 33. To enable the dual-scale feature for some level applications you must select d-SCAL in the Input selection menu.
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Multi Process Meter Instruction Manual Error Message (Error) An error message indicates that the calibration or scaling process was not successful. After the error message is displayed, the meter reverts to the input prior to the failure during calibration or scaling and to input 1 during internal calibration, allowing the appropriate input signal to be applied or programmed. The error message might be caused by any of the following conditions: 1.
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Multi Process Meter Instruction Manual Calibrating the Meter with External Source (Cal) Note: To scale the meter without a signal source refer to Scaling the Meter (SCALE), page 38. The meter can be calibrated to display the process variable in engineering units by applying the appropriate input signal and following the calibration procedure. The use of a calibrated signal source is strongly recommended to calibrate the meter.
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Multi Process Meter Instruction Manual Setting the Display Parameter & Intensity (dsplay) The upper display (Big) can be programmed to display: 1. Process value 1 (PV1) 2. Process value 2 (PV2) 3. Percent of PV1 (PCT) 4. Relay set points 5. Max & min values 6. Modbus input 7. Display reading and units 8. Display gross 9. Toggle net & gross The lower display (Little) can be programmed to display: 1. Unit 2. Process value 1 (PV1) 3. Process value 2 (PV2) 4. Percent of PV1 (PCT) 5. Relay set points 6.
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Multi Process Meter Instruction Manual Display Setup Menu After setting up the input and display, press the Menu button to exit programming and skip the rest of the setup menu. Press the Menu button again and the Up arrow to reach the Program menu and complete the scaling or calibration of the meter.
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Multi Process Meter Instruction Manual Setting the Relay Operation (relay) This menu is used to set up the operation of the relays. ! Caution! 1. 2. 3. 4. 5. 6. During setup, the relays do not follow the input and they will remain in the state found prior to entering the Relay menu. Relay action a. Automatic reset only (non-latching) b. Automatic + manual reset at any time (non-latching) c. Latching (manual reset only) d. Latching with Clear (manual reset only after alarm condition has cleared) e.
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Multi Process Meter Instruction Manual Setting the Relay Action Operation of the relays is programmed in the Action menu. The relays may be set up for any of the following modes of operation: 1. Automatic reset (non-latching) 2. Automatic + manual reset at any time (non-latching) 3. Latching (manual reset only, at any time) 4. Latching with Clear (manual reset only after alarm condition has cleared) 5. Pump alternation control (automatic reset only) 6.
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Multi Process Meter Instruction Manual Programming Set and Reset Points High alarm indication: program set point above reset point. Low alarm indication: program set point below reset point. The deadband is determined by the difference between set and reset points. Minimum deadband is one display count. If the set and reset points are programmed with the same value, the relay will reset one count below the set point. Note: Changes are not saved until the reset point has been accepted.
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Multi Process Meter Instruction Manual Relay and Alarm Operation Diagrams The following graphs illustrate the operation of the relays, status LEDs, and ACK button. High Alarm Operation (Set > Reset) For Manual reset mode, ACK can be pressed anytime to turn "off" relay. To detect a new alarm condition, the signal must go below the set point, and then go above it.
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Multi Process Meter Instruction Manual Low Alarm Operation (Set < Reset) Input Reset Set Relay LED energized on de-energized off Automatic (non-latching) Relay LED ACK pressed Automatic or Manual (non-latching) Relay LED ACK pressed Manual (latching) Relay LED ACK pressed Manual only after passing above Reset (latching with clear) For Manual reset mode, ACK can be pressed anytime to turn "off" relay. For relay to turn back “on”, signal must go above set point and then go below it.
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Multi Process Meter Instruction Manual High Alarm with Fail-Safe Operation (Set > Reset) Input Set Relay LED energized off de-energized on Automatic (non-latching) Relay LED ACK pressed Automatic or Manual (non-latching) Relay LED ACK pressed Manual (latching) Relay LED ACK pressed Manual only after passing below Reset (latching with clear) Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.
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Multi Process Meter Instruction Manual Low Alarm with Fail-Safe Operation (Set < Reset) Input Reset Set Relay de-energized on LED energized off Automatic (non-latching) Relay LED ACK pressed Automatic or Manual (non-latching) Relay LED ACK pressed Manual (latching) Relay LED ACK pressed Manual only after passing above Reset (latching with clear) Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.
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Instruction Manual Pump Alternation Control Operation Multi Process Meter 51
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Multi Process Meter Instruction Manual Relay Sampling Operation Input Set Reset Sample Time Sample Time Sample Time Relay LED When the signal crosses the set point, the relay trips and the sample time starts. After the sample time has elapsed, the relay resets. The cycle repeats every time the set point is crossed, going up for high alarms and going down for low alarms. The sample time can be programmed between 0.1 and 5999.9 seconds.
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Multi Process Meter Instruction Manual Signal Loss or Loop Break Relay Operation The following graph shows the loop break relay operation for a high alarm relay. Input Set Reset Relay LED de-energized off energized on Loop Break = Ignore Relay LED Loop Break = Off Relay LED Loop Break = On When the meter detects a break in the 4-20 mA loop, the relay will go to one of the following selected actions: 1. Turn On (Go to alarm condition) 2. Turn Off (Go to non-alarm condition) 3.
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Multi Process Meter Instruction Manual Time Delay Operation The following graphs show the operation of the time delay function. When the signal crosses the set point, the On time delay timer starts and the relay trips when the time delay has elapsed. If the signal drops below the set point (high alarm) before the time delay has elapsed, the On time delay timer resets and the relay does not change state. The same principle applies to the Off time delay.
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Multi Process Meter Instruction Manual Relay Operation Details Overview The relay capabilities of the meter expand its usefulness beyond simple indication to provide users with alarm and control functions. These capabilities include front panel alarm status LEDs as well as either 2 or 4 optional internal relays and/or 4 external relays expansion module.
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Multi Process Meter Instruction Manual Front Panel LEDs The LEDs on the front panel provide status indication for the following: LED Status LED Status 1 Alarm 1 5 Alarm 5 2 Alarm 2 6 Alarm 6 3 Alarm 3 7 Alarm 7 4 Alarm 4 8 Alarm 8 The meter is supplied with four alarm points that include front panel LEDs to indicate alarm conditions. This standard feature is particularly useful for alarm applications that require visual-only indication.
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Multi Process Meter Instruction Manual Non-Latching Relay (Auto) Automatic reset only Condition LED Relay Normal Off Off Alarm On On Ack (No effect) On On Normal Off Off In this application, the meter is set up for automatic reset (non-latching relay). Acknowledging the alarm while it is still present has no effect on either the LED or the relay. When the alarm finally goes away, the relay automatically resets and the LED also goes off.
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Multi Process Meter Instruction Manual Latching Relay (Lt-Clr) Manual reset only after alarm condition has cleared Condition LED Relay Normal Off Off Alarm On On Ack (No effect) On On Normal On On Ack Off Off In this application, the meter is set up for manual reset only after the signal passes the reset point (alarm condition has cleared). Acknowledging the alarm while it is still present has no effect on either the LED or the relay.
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Multi Process Meter Instruction Manual Pump Alternation Control Applications (Altern) For pump control applications where two or more similar pumps are used to control the level of a tank or a well, it is desirable to have all the pumps operate alternately. This prevents excessive wear and overheating of one pump over the lack of use of the other pumps. Up to 8 relays can be set up to alternate every time an on/off pump cycle is completed.
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Multi Process Meter Instruction Manual Application #2: Pump Alternation Using Relays 3 & 4 1. Relays 1 and 2 are set up for low and high alarm indication. 2. Relays 3 and 4 are set up for pump alternation.
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Multi Process Meter Instruction Manual 3. If the backup pump is not able to keep up, and the level reaches 7000 gallons, relay #4 transfers and starts the main pump as well. 4. Relay #2 trips the High Level Alarm at 7500 gallons and resets at 6900 gallons. 5. Relay #1 trips the Low Level Alarm at 495 gallons and resets at 750 gallons.
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Multi Process Meter Instruction Manual Setting Up the Interlock Relay (Force On) Feature Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature: 1. Access the Setup – Relay – Action menu and set the action to off. 2. In the Advanced features – User menu program any of the digital inputs to Force On any of the internal relays (1-4). 3. Connect a switch or dry contact between the +5V terminal and the corresponding digital input (dI-1 to dI-4) terminal.
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Multi Process Meter Instruction Manual Interlock Relay Operation Example Relays 1 & 2 are configured to energize (their front panel LEDs are off) when SW1 & SW2 switches (above) are closed. If the contacts to these digital inputs are opened, the corresponding front panel LEDs flash indicating this condition. The processes being controlled by the interlock relay will stop, and will re-start only after the interlock relay is reactivated by the digital inputs (switches).
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Multi Process Meter Instruction Manual Reset Menu (reset) The Reset menu is used to reset the maximum or minimum reading (peak or valley) reached by the process; both may be reset at the same time by selecting “reset high & low” (rst HL). The tare value used to zero the display may be reset by selecting “reset tare” (rst tr). Control Menu (Contrl) The Control menu is used to control the 4-20 mA analog output and the relays manually, ignoring the input.
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Multi Process Meter Instruction Manual Setting Up the Password (pass) The Password menu is used for programming three levels of security to prevent unauthorized changes to the programmed parameter settings. Pass 1: Allows use of function keys and digital inputs. Pass 2: Allows use of function keys, digital inputs and editing set/reset points. Pass 3: Restricts all programming, function keys, and digital inputs. Protecting or Locking the Meter Enter the Password menu and program a six-digit password.
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Multi Process Meter Instruction Manual Making Changes to a Password Protected Meter If the meter is password protected, the meter will display the message Locd (Locked) when the Menu button is pressed. Press the Enter button while the message is being displayed and enter the correct password to gain access to the menu. After exiting the programming mode, the meter returns to its password protected condition.
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Multi Process Meter Instruction Manual Advanced Features Menu To simplify the setup process, functions not needed for most applications are located in the Advanced Features menu. Press and hold the Menu button for three seconds to access the advanced features of the meter.
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Multi Process Meter Instruction Manual Advanced Features Menu & Display Messages The following table shows the functions and messages of the Advanced Features menu in the order they appear in the menu.
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Multi Process Meter Display Instruction Manual Parameter Action/Setting Source Source Select source for the 4-20 mA output O-rang Overrange Program mA output for display overrange u-rang Underrange Program mA output for display underrange break Break Set input break condition operation mAx Maximum Program maximum mA output allowed min Minimum Program minimum mA output allowed Calib Calibrate Calibrate 4-20 mA output (internal reference source used for scaling the output) 4 mA 4 mA
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Multi Process Meter Copy Copy Instruction Manual Enter copy function send Send Send meter settings to another meter done Done Copy function completed Diagnostics Display parameter settings Input Input Input selection units Units Select the display units/tags Filter Filter Filter value ByPASS Bypass Bypass value Round Functn Round Function Round value Function selected SCALE Scale Scaling parameter Cutoff Cutoff Cutoff value Dsplay Display Display assignments RELAY Relays
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Multi Process Meter Instruction Manual Noise Filter (filter) The noise filter is available for unusually noisy signals that cause an unstable process variable display. The noise filter averages the input signal over a certain period. The filter level determines the length of time over which the signal is averaged. The filter level can be set between 2 and 199. The higher the filter level, the longer the averaging time and so the longer it takes the display to settle to its final value.
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Multi Process Meter Instruction Manual Modbus RTU Serial Communications (serial) The meter is equipped with serial communications capability as a standard feature using Modbus RTU Serial Communication Protocol. To communicate with a computer or other data terminal equipment, an RS-232 or RS-485 option is required; see Ordering Information on page 7 for details. Warning! Do not connect any equipment other than Dwyer Instruments, Inc.’s expansion modules, cables, or meters to the RJ45 M-LINK connector.
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Multi Process Meter Instruction Manual Select Menu (SElect) The Select menu is used to select the signal input conditioner applied to the input (linear, square root, programmable exponent, or round horizontal tank), low-flow cutoff, and analog output programming. The multi-point linearization is part of the linear function selection.
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Multi Process Meter Instruction Manual Square Root Linearization (Square) The square root function can be used to linearize the signal from a differential pressure transmitter and display flow rate in engineering units. Programmable Exponent Linearization (Prog E) The programmable exponent can be used to linearize the signal from level transmitters in open-channel flow applications using weirs and flumes.
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Multi Process Meter Instruction Manual Round Horizontal Tank Linearization (rHt) This function automatically calculates the volume in a round horizontal tank with flat ends. Set the display for the desired decimal point and engineering units before entering the round horizontal tank function. Select units, inches or cm for the tank dimensions. Enter the diameter and the length in inches and the results are calculated automatically in US gallons.
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Multi Process Meter Instruction Manual Low-Flow Cutoff (CutofF) The low-flow cutoff feature allows the meter to be programmed so that the often-unsteady output from a differential pressure transmitter, at low flow rates, always displays zero on the meter. The cutoff value may be programmed from 0 to 999999. The meter will display zero below the cutoff value. Programming the cutoff value to zero disables the cutoff feature.
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Multi Process Meter Instruction Manual Programmable Function Keys User Menu (user) The User menu allows the user to assign the front panel function keys F1, F2, and F3, the digital input F4, and up to eight additional digital inputs to access most of the menus or to activate functions immediately (e.g. Reset max & min). F4 is a digital input on the signal input connector. Up to eight digital outputs can be assigned to a number of actions and functions executed by the meter (e.g.
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Multi Process Meter Instruction Manual Tare (tare) The tare function zero’s out the display. In the case of scale weight, tare is used to eliminate container weight and provide net weight readings. There are two tare functions; Capture Tare and Reset Tare. When the capture tare function is used, the display reading is offset by the displayed amount to make the displayed value zero. This modified display value is the net value. The originally displayed value without the tare offset is the gross value.
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Multi Process Meter Instruction Manual Internal Source Calibration (ICAL) The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection. The calibration equipment is certified to NIST standards. The use of calibrated signal sources is necessary to calibrate the internal source of the meter. The meter’s internal source is what allows the user to scale the meter without applying a signal. Check calibration of the meter at least every 12 months.
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Multi Process Meter Instruction Manual 7. The display moves to the high input calibration (C Hi). Apply the high input signal and press Enter. 8. Set the display for the high input calibration, in the same way as it was set for the low input calibration, typically 20.000 mA. The graphic above shows the calibration of the current input. The voltage input is calibrated in a similar way. Tips:  Low and high input signals can be any valid values within the range of the meter.
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Multi Process Meter Instruction Manual Error Message (Error) An error message indicates that the calibration or scaling process was not successful. The error message might be caused by any of the following conditions: 1. Input signal is not connected to the proper terminals, or it is connected backwards. 2. Wrong signal selection in Setup menu. 3. Minimum input span requirements not maintained.
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Multi Process Meter Meter Copy or Cloning Instructions ! Caution! 1. 5. 6. 7. 8. Do not connect the two meters to the same signal source while cloning. Internal calibration may be affected. Connect two meters using a PMA-02 meter copy cable. Warning! 2. 3. 4. Instruction Manual Using standard CAT5 or other cable will cause damage to both meters. Use PMA-02 meter copy cable only. Do not connect the two meters to the same signal source. Power up both meters. Leave Clone meter in Run Mode.
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Multi Process Meter Instruction Manual METER OPERATION The meter is capable of accepting current (0-20 mA, 4-20 mA) and voltage signals (0-5 V, 1-5 V, 0-10 V,  10 V) and displaying these signals in engineering units from -99999 to 999999 (e.g. a 4-20 mA signal could be displayed as -50.000 to 50.000). The dual-line display can be customized by the user to operate in such a way as to satisfy a specific application.
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Multi Process Meter Instruction Manual F4 Operation A digital input, F4, is standard on the meter. This digital input is programmed identically to function keys F1, F2, and F3. The input is triggered with a contact closure to COM, or with an active low signal. During operation, F4 operates according to the way it has been programmed in the Advanced Features – User menu.
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Multi Process Meter Instruction Manual TROUBLESHOOTING The rugged design and the user-friendly interface of the meter should make it unusual for the installer or operator to refer to this section of the manual. However, due to the many features and functions of the meter, it’s possible that the setup of the meter does not agree with what an operator expects to see. If the meter is not working as expected, refer to the Diagnostics menu and recommendations below.
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Multi Process Meter Instruction Manual Reset Meter to Factory Defaults When the parameters have been changed in a way that is difficult to determine what’s happening, it might be better to start the setup process from the factory defaults. Instructions to load factory defaults: 1. Enter the Advanced Features menu. See Advanced Features Menu, page 67. 2. Press Up arrow to go to Diagnostics menu 3. Press and hold Right arrow for three seconds, press Enter when display flashes reset.
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Multi Process Meter Instruction Manual Factory Defaults & User Settings The following table shows the factory setting for most of the programmable parameters on the meter. Next to the factory setting, the user may record the new setting for the particular application. Model: ______________ S/N: _______________ Date: ___________ Parameter Display Default Setting User Setting Input type Input 4-20 mA Dual-scale feature d-SCAL No (Single scale) Filter filter 70 Bypass bypass 0.
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Multi Process Meter Parameter Display Instruction Manual Default Setting User Setting Relay 3 reset point RSt 3 2.500 Relay 4 action Act 4 Automatic Relay 4 set point Set 4 4.000 Relay 4 reset point RSt 4 3.500 Fail-safe relay 1 Fls 1 Off Fail-safe relay 2 Fls 2 Off Fail-safe relay 3 Fls 3 Off Fail-safe relay 4 Fls 4 Off On delay relay 1 On 1 0.0 sec Off delay relay 1 Off 1 0.0 sec On delay relay 2 On 2 0.0 sec Off delay relay 2 Off 2 0.0 sec On delay relay 3 On 3 0.
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Multi Process Meter Parameter Instruction Manual Default Setting User Setting Display Minimum output min 1.000 mA Slave ID (Address) SlavId 247 Baud rate baud 9600 Transmit delay Tr dly 50 ms Parity Parity Even Byte-to-byte timeout t-byt 010 (0.
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Multi Process Meter Instruction Manual Troubleshooting Tips Symptom Check/Action No display at all Not able to change setup or programming, Locd is displayed Check power at power connector Meter is password-protected, enter correct six-digit password to unlock Check: 1. Signal connections 2. Input selected in Setup menu 3. Minimum input span requirements Check: 1. Input selected in Setup menu 2. Corresponding signal at Signal connector Check: 1. Input signal stability and value 2. Display scaling vs.
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Multi Process Meter Instruction Manual Alphabetical List of Display Functions & Messages Display Parameter Action/Setting Description 20 mA 20 mA output Enter mA output value read by milliamp meter with at least 0.001 mA resolution 4 mA 4 mA output Enter mA output value read by milliamp meter with at least 0.
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Multi Process Meter Instruction Manual Display Parameter Action/Setting Description Cal Calibrate Enter the Calibration menu Calib Calibrate Calibrate 4-20 mA output (internal reference source used for scaling the output) Contrl Control Enter Control menu to turn relays on/off, set analog output manually, or return meter to automatic operation Copy Copy Enter copy function CutofF Cutoff Set low-flow cutoff D Gros Display gross Select to display the gross D nt-G Display net/gross Sel
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Multi Process Meter Instruction Manual Display Parameter Action/Setting Description disabl Disable Disable function key DLY 1 Delay 1 Enter relay 1 time delay setup (1-8) dO 1 Digital output 1 Assign digital output 1 – 8, if expansion modules are connected done Done Copy function completed d-SCAL Dual-scale Enter d-SCAL menu and select Yes for dualscale display or No for single scale display DSet 1 Display set 1 Select to display set point 1 (1-8) dsplay Display Enter the Display me
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Multi Process Meter Instruction Manual Display Parameter Action/Setting Description Input Input Enter Input selection menu LatCH Latching Set relay for latching operation LED t LED test Test all LEDs Length Length Enter the tank’s length in inches Linear Linear Set meter for linear function and select number of linearization points Lit Hi Max on lower display Assign digital input to display max on the lower display Lit HL Max/min lower display Assign digital input to toggle max/min
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Multi Process Meter Instruction Manual Display Parameter Action/Setting Description On 1 On 1 Set relay 1 On time delay (1-8) O-rang Overrange Program mA output for display overrange Out 1 Output 1 Program output 1 value (e.g. 4.000 mA) Out 2 Output 2 Program output 2 value (e.g. 20.
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Multi Process Meter Instruction Manual Display Parameter Action/Setting Description SCAL 1 Scale 1 Enter the Scale 1 menu for PV1 SCAL 2 Scale 2 Enter the Scale 2 menu for PV2 SCALE Scale Enter the Scale menu SelEct Select Enter Select menu (function, cutoff, output programming) send Send Send meter settings to another meter seriAl Serial Set serial communication parameters Set 1 Set 1 Program set point 1 (1-8) setup Setup Enter Setup menu SlavId Slave ID Set Slave ID or meter
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Multi Process Meter Instruction Manual Figure 22.
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Multi Process Meter Instruction Manual This Page Intentionally Left Blank 98
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Multi Process Meter Instruction Manual NOTES 99
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LIM6000DW_D | SFT039 Ver 3.100 & up | 08/12 DWYER INSTRUMENTS, INC. PO Box 373 • Michigan City IN 46360 USA Phone: (800) 872-9141 Fax: (219) 872-9057 www.dwyer-inst.