AD-4408A Weighing Indicator for Field Networks INSTRUCTION MANUAL 1WMPD4001973
WARNING DEFINITIONS The warnings described in this manual have the following meanings: A potentially hazardous situation which, if not avoided, could result in death or serious injury. A potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damage to the instrument. This symbol indicates caution against electrical shock. Do not touch the part where the symbol is placed. This symbol indicates the ground terminal.
Contents 1. Safety Precautions .......................................................................................................3 2. Introduction...................................................................................................................4 3. Specifications ...............................................................................................................5 3.1. Analog Section ........................................................................................
8.2. Basic Functions (fncf) .....................................................................................32 8.3. Standard Serial Output (Cl f) ..........................................................................33 9. Interface......................................................................................................................34 9.1. Standard Serial Output......................................................................................34 9.1.1. Connection.................
1. Safety Precautions For safe and correct usage, read the following precautions carefully before using the indicator. Grounding located on the rear Earth ground the indicator by connecting the earth ground terminal panel to the earth, to prevent a fire, electrical shock or indicator malfunction. Do not share the ground line with other electrical power equipment. Appropriate power cable Use a power cable appropriate to the supply voltage and current used.
2. Introduction The AD-4408A is a weighing indicator that amplifies signals from a load cell, converts it to digital data and displays it as a weight value. Connection to various field networks is possible by installing the interface module into the option slot. • For details on applicable field networks, visit our website. • Download the instruction manual for each interface from our website. (Memory map and check modes vary with the interface.
3. Specifications 3.1. Analog Section Input sensitivity Input voltage range Zero adjustment range Load cell excitation voltage Load cell drive capacity Temperature Zero coefficient Span Non-linearity A/D conversion method A/D resolution count Display resolution Sampling rate 3.2. 0.15 μV/d or greater -35 mV to +35 mV (-7 mV/V to +7 mV/V) -35 mV to +35 mV (-7 mV/V to +7 mV/V) 5VDC 5%, 120 mA with remote sensing capability Maximum 8 x 350 Ω load cells 0.02 μV /°C typ., 0.1 μV /°C max. 3ppm /°C typ.
3.3. General 3.3.1. Interface Standard serial output Option slot Output for communication with A&D peripheral devices (20 mA current loop) Connection to various field networks is possible by installing the interface module into the option slot. For details on applicable field networks, visit our website. 3.3.2. Measuring functions Zero adjustment Zero tracking Tare Stability detection Digital filter AD-4408A • Sets the gross weight to zero by pressing the ZERO key.
3.3.3. Other Power source Power consumption Operating temperature Operating humidity Installation method Mass • Zero value, tare weight, calibration data and function data are written into the FRAM. • Data retention time is 10 years or more. 100 VAC to 240 VAC, +10%, -15%, (50/60 Hz) Approximately 10 VA -10°C to +40°C 85% R.H. or less (no condensation) Panel mount Approximately 800 g 3.3.4.
4. Description of Each Part 4.1. Front Panel 1 15 14 ZERO TARE 13 12 Net/B/G NET GROSS ZERO STABLE GROSS NET HOLD 9 ON/OFF ESC ENTER 10 11 CAL 16 2 3 4 5 6 7 8 Fig.1 Front panel Displays No. Name 1 Main display 2 ZERO 3 STABLE 4 5 GROSS NET 6 HOLD 7 8 UNIT AD-4408A Description Displays the weight value, setting values, error messages, etc. Turns ON when the weight value is in the center of zero. • Turns ON when the weight value is stable.
Key switches No. Name 9 10 11 CAL ON/OFF ESC ENTER Net/B/G NET GROSS 14 TARE 15 ZERO 16 • The key to proceed to the selected mode. • Confirms the setting value and stores the data when pressed after a setting is changed.
4.2. Rear Panel 2 3 4 4 1 Fig.2 Rear panel 1 Terminal block Terminal No. 1 2 3 4 5 6 7 8 9 10 11 12 13 EXC+ SEN+ SENEXCSIG+ SIGSHLD C.L. C.L. F.G.
5. Installation The weighing indicator is a precision electronic instrument. Handle it carefully. 5.1. Precautions 5.1.1. Environment The operating temperature is -10°C to +40°C . Do not install the indicator in direct sunlight. The indictor is not water-resistant. When used in an environment where the indicator may be exposed to splashing water, secure the front panel to the control panel using the accessory panel mount packing. It makes the front panel water-resistant equivalent to IP-65.
5.1.2. Power source Earth ground the indicator to prevent electrical shock or indicator malfunction. Before connecting the indicator to the power source, read the instruction manual thoroughly. Do not connect the indicator to the power source before the installation is complete. To avoid electrical shock, do not handle the power cable with a wet hand. Earth ground the indicator. Do not share the ground line with other electrical power equipment.
5.2. Load Cell Connection Connect the load cell cable to the terminals as shown below. Use a 6-wire shielded cable to connect a load cell, especially when the cable is long or when summing multiple load cells, to avoid drift caused by changes in temperature. If the cable is short, a 4-wire shielded cable with terminals 1 and 2 (EXC+ and SEN+) and terminals 3 and 4 (SEN- and EXC-) connected may be used, but the error increases when summing multiple load cells and the cable is long.
5.3. Interface Module Installation Be sure to disconnect the AD-4408A from the power source before installing the interface module. Install the interface module as follows: Blank panel Step 1 Using a Phillips screwdriver, loosen the screws that secure the blank panel to the AD-4408A rear panel, and remove the blank panel. Step 2 Insert the interface module into the option slot as shown to the right.
6. Operation 6.1. General Function 6.1.1. Zero adjustment Zero adjustment is a function to set the gross weight to zero. It is performed by pressing the ZERO key. The zero adjustment range is set in Calf05 (zero adjustment range) and is expressed in percent of the weighing capacity with the calibration zero point as the center. Zero adjustment is disabled, even within the zero adjustment range, when the A/D converter overflow occurs. A ZERO error is output if zero adjustment is not performed.
6.1.3. Tare Tare is a function to store the gross weight as the tare value and set the net weight to zero. The tare weight is stored in the non-volatile memory and is maintained, even if the power is disconnected. Clearing the tare weight is performed using the F key assigned to clear the tare weight. Alternately, apply power to the indicator while holding the TARE key, or with the indicator in the OFF mode, press and hold the TARE key and press the ON/OFF key, to clear the tare weight.
6.1.5. display Assign a function to the display in the general functions. Functions related to the display zfncf04: Assigns a function to the display from the functions below: 0: None 1: Zero tracking in progress 2: Alarm (Zero range setting error, over) 3: F key status (Read the description below.) F key status zEnables when alternate switch or momentary switch is selected for fncf02 (F key). The display turns ON when the F key is ON and turns OFF when the F key is OFF. 6.1.6.
6.2. Mode Map The indicator has several modes to perform various operations. Perform mode switching by key operation as shown below, only in the direction of the solid arrow. After setting a mode, the indicator resets automatically. Alternately, the indicator resets, when the power is disconnected. Automatic reset after setting Power ON Weighing mode Switch using the ON/OFF key See the note below.
7. Calibration 7.1. General Description In the calibration mode, the operation to relate the output voltage from a load cell to the weight value and other operations directly related to weighing are performed. Calibration with an actual load Calibration-related function Digital span All data initialization Calibration is performed using a calibration weight. • Zero calibration: Adjusts the indicator so that the measured value will be zero when no load is applied to the load cell.
7.2. Calibration With an Actual Load (Cal5et) Calibration is performed using a calibration weight Before performing calibration for the first time, set the unit, decimal point position, minimum division and weighing capacity in the calibration-related function mode. NOTE: To avoid drift caused by changes in temperature, warm up the indicator for ten minutes or more before performing calibration with an actual load.
Step 7 Calend is displayed. To re-adjust the span, press the F key. Step 8 Press the ESC key. into the FRAM. Cal5et is displayed and the calibration data is written Step 9 The current state is the same as that of step 2. To go back to the weighing mode, press the ESC key again. NOTE: The blinking decimal point indicates that the current value is not the weight value. If C errX is displayed, an error has occurred. Refer to “7.4. Calibration Errors” to take some measures.
7.3. Calibration-Related Functions (Calf) Step 1 Press the ON/OFF key to turn the indicator ON (weighing mode) if it is in the OFF mode. Remove the CAL key cover and press the CAL key. Cal is displayed to indicate that the indicator enters the calibration mode. Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode of calibration with an actual load. To go back to the weighing mode, press the ESC key. Step 3 Press the ∧ or ∨ key to select CalfF and press the ENTER key.
Function No. Parameter or Setting range Calf01 0 to 4 Calf02 0 to 5 Calf03 1 to 6 Calf04 1 to 999999 Calf05 0 to 100 Function Default value Description Unit of the weight value 0: None 1: g Unit 2: kg 3: t 4: lb (USA version) Decimal point position of the weight value 0: None 123456 12345.6 1: 101 Decimal 2 2: 10 1234.56 point 3 position 3: 10 123.456 4 4: 10 12.3456 5 5: 10 1.
Function No. Parameter or Setting range Function Calf06 0.0 to 5.0 Zero tracking time Calf07 0.0 to 9.9 Zero tracking band Default value Description Performs zero tracking using this setting in combination with the setting of the zero tracking band. When 0.0, zero tracking will not be performed. Unit: second in 0.1 increments Performs zero tracking using this setting in combination with the setting of the zero tracking time. When 0.0, zero tracking will not be performed.
Function No. Parameter or Setting range Function Calf08 0.0 to 9.9 Stability detection time Calf09 0 to 9 Stability detection band Default value Description Performs stability detection using this setting in combination with the setting of the stability detection band. When 0.0, stability detection will not be performed. (Stable all the time) Unit: second in 0.1 increments Performs stability detection using this setting in combination with the setting of the stability detection time.
Function No. Parameter or Setting range Calf13 1 to 3 Calf14 1 to 2 Calf15 0 to 1 Calf16 0 to 1 Calf17 -7.00000 to 7.00000 Calf18 0.00001 to 9.99999 Calf19 1 to 999999 AD-4408A Function Description Default value Condition to judge over when the gross weight is negative. A/D negative over or Over at 1: Gross weight < -999999 1 negative gross weight 2: Gross weight < -999999, Gross weight < negative weighing capacity 3: Gross weight < -19 d Condition to judge over when the net weight is negative.
Input voltage CALF18 CALF17 CALF19 0 Displayed weight 0 NOTE: Record the setting values of Calf17, 18 and 19 in the “Setting List” at the end of the manual to prepare against a failure. By changing the parameters of Calf17, 18 and 19, “zero calibration” and “span calibration” can be adjusted optionally. (Digital span accuracy approx. 1/5000: The accuracy varies depending on the load cell output accuracy and the conditions of calibration.) Except for an emergency, perform calibration with an actual load.
7.4. Calibration Errors When an error occurs during calibration, the error number is displayed. If calibration is finished without releasing the error, the setting values will be restored to the state before calibration. Calibration errors and remedies Error No. Description C err1 The display resolution (weighing capacity / minimum division) exceeds the specified value. C err2 Voltage at zero calibration exceeds in the positive direction.
7.5. Load Cell Output Adjustment Add a resistor as shown below to adjust the load cell output. Use a resistor with a high resistance value and a low temperature coefficient. SIG- "C Err 3" When exceeding in the negative direction) EXC+ EXC+ r to is es d R dd e a R e ad sis d e t or d "C Err 2" (When exceeding in the positive direction) SIG+ SIG- EXC- SIG+ EXC- Fig.
8. General Functions General functions are divided into groups per function and are indicated by the group name with the function number. NOTE: General functions determine the AD-4408A performance and all of the settings are stored in the FRAM. 8.1. Setting Procedure Step 1 While pressing and holding the ENTER key, press the F key. fnc is displayed to indicate that the indicator will enter the general function mode. Step 2 Press the ENTER key. The indicator enters the general function mode.
Step 6 Press the ESC key. The function number disappears and the indicator returns to the state of step 3. Press the ESC key to store the setting values in the FRAM and go back to the weighing mode. NOTE: The blinking decimal point indicates that the current value is not the weight value. If a value exceeding the settable range is entered, err dt is displayed and the input is canceled.
8.2. Basic Functions (fncf) Function No. Parameter or Setting range Ffncf01 000000 to 111111 Function Disable key switch Each digit of the setting corresponds to a key switch. Only available in the weighing mode. 0: Does not disable the key switch function. 1: Disables the key switch function.
8.3. Standard Serial Output (Cl f) Function No. Parameter or Setting range Function Cl f01 1 to 5 Output data Cl f02 1 to 3 Data transfer mode Cl f03 1 to 2 Baud rate Cl f04 0 to 99 ID number Default value Description 1: Displayed weight 2: Gross weight 3: Net weight 4: Tare weight 5: Gross/Net/Tare 1: Stream 2: Auto printing (Note 1) 3: Manual printing 1: 600 bps 2: 2400 bps Adds an ID number to the standard serial output. (Note 2) 0: Does not add an ID number.
9. Interface 9.1. Standard Serial Output The standard serial output with 0 to 20 mA can be connected to a device such as an A&D printer or remote display. The interface has no power source. Therefore, the external devices to be connected must have a power source. The setting values of the standard serial output are changed in the general functions Cl f01 to Cl f04. Type Data bits Start bit Parity Stop bit Baud rate Code 0 to 20 mA current loop 7 bits 1 bit 1 bit, even 1 bit 600, 2400 bps ASCII 9.1.1.
9.1.2. Output data The data format used is A&D standard format. This is a format to be used with an A&D printer or remote display and consists of two headers, data, unit and a terminator. A&D standard format S T , G S , + 0 Header 1 Header 2 ASCII code ST US OL GS NT TR , 0 to 9 + SP (space) . SP SP SP g kg SP t lb CR LF Header 1 Header 2 Separator Data (ASCII code) Unit (five types) Terminator 1 2 3 .
9.1.3. Data transfer mode Three data transfer modes are available; stream, auto printing and manual printing. Stream mode Auto printing mode Manual printing mode Transmits data in sync with the display update rate. If the indicator can not catch up with the update rate because of the baud rate, the transmission is paused until the next updating. The transmitted data is the same as what is being displayed. Data that is not displayed is never transmitted.
10. Maintenance 10.1. Error Messages If an error message is displayed, refer to the chart below to take proper measures. Error message C5 err ad err ra err fraerr Calerr C errX err dt 10.2. Cause Remedy Program checksum error Repair is required. Data can not be acquired Repair is required. from the A/D converter. Data can not be written into Repair is required. the backup memory. Perform initialization. Correct data can not be If initialization does not clear the read from the FRAM.
Display Checking item Chckey Chc Cl Chc∗∗∗ Chc∗∗∗ Chc∗∗∗ Chc r5 Chc ad Chc in Chcpr9 Chc 5n C5 pr9 C5 fra Calfdt Key switches Standard serial output Interfaces Refer to the instruction manual for each interface, available on our website. Testing terminal A/D (Load cell) Internal count Program version Serial number Program checksum Memory (FRAM) checksum Calibration-related functions 10.2.2. Checking the key switches With Chckey displayed, press the ENTER key to enter the key switch check mode.
10.2.4. Checking interfaces Refer to the instruction manual for each interface, available on our website. 10.2.5. Checking the testing terminal The Chc r5 display is for checking the testing terminal. Do not use it. 10.2.6. Checking the A/D (load cell) With Chc ad displayed, press the ENTER key to enter the A/D check mode. The load cell output value is displayed in mV/V. The example below is when the internal count is 1.23456 mV/V. 1.23456 10.2.7.
10.2.11. Checking the FRAM checksum With C5 fraP displayed, press the ENTER key to display the FRAM checksum. The memory set in the general functions is not counted. The example below is when the checksum is EF. C500ef 10.2.12. Checking the calibration-related functions With CalfdtP displayed, press the ENTER key to display the settings of the calibration-related functions. NOTE: For contents and operations of the calibration-related functions, refer to “7.3. Calibration-Related Functions”.
10.3. Initialization Mode Initialization restores the contents of the FRAM to the default values. Three types of initialization are available as shown below. Initialization mode Display RAM initialization ini ra General functions initialization inifnc All data initialization iniall Description Initializes the contents of the RAM only. The zero and tare values will be restored to 0. Initializes the contents of the general functions stored in the FRAM. Initializes all the contents in the FRAM.
10.3.2. All data initialization Step 1 Remove the CAL key cover and press the CAL key. Cal is displayed to indicate that the indicator enters the calibration mode. Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode of calibration with an actual load. To go back to the weighing mode, press the ESC key. Step 3 Press the ∧ or ∨ key to select the all data initialization mode ( iniallLL ) and press the ENTER key. Step 4 All the status LEDs blink to prompt a confirmation.
11. Setting List When performing maintenance, use the following list as a memo. In case of inquiry about the product, inform of the user setting. 11.1. Basic Functions Function No. Parameter or Setting range Ffncf01 000000 to 111111 fncf02 0 to 6 fncf03 1 to 3 fncf04 0 to 3 fncf05 0 to 9 Description Disable key switch 0: Does not disable the key switch function. 1: Disables the key switch function. Assigns a function to the F key.
11.2. Standard Serial Output Function No. Parameter or Setting range Cl f01 1 to 5 Cl f02 1 to 3 Cl f03 1 to 2 Cl f04 0 to 99 AD-4408A Description Output data 1: Displayed weight 2: Gross weight 3: Net weight 4: Tare weight 5: Gross/Net/Tare Data transfer mode 1: Stream 2: Auto printing 3: Manual printing Baud rate 1: 600 bps 2: 2400 bps ID number 0: Does not add an ID number.
11.3. Calibration-Related Functions Function No. Parameter or Setting range Description Default value Calf01 0 to 4 Unit of the weight value 0: None 1: g 2: kg 3: t 4: lb (USA version) 2 Calf02 0 to 5 Decimal point position of the weight value: 10n 0 Minimum division (d) of the weight value 1: 1 2: 2 Calf03 3: 5 1 to 6 4: 10 5: 20 6: 50 Weighing capacity of the weighing instrument Calf04 The decimal point position is the same as 1 to 999999 the setting of Calf02.
Function No. Parameter or Setting range Calf13 1 to 3 Calf14 1 to 2 Calf15 0 to 1 Calf16 0 to 1 Calf17 -7.00000 to 7.00000 Calf18 0.00001 to 9.99999 Calf19 1 to 999999 Calf20 0 to 1 Calf21 0 to 1 AD-4408A Description Condition to judge over when the gross weight is negative. A/D negative over or 1: Gross weight < -999999 2: Gross weight < -999999, Gross weight < negative weighing capacity 3: Gross weight < -19 d Condition to judge over when the net weight is negative.
12. External Dimensions (134.7) Net/B/G (6) 10 99.5 16 (3.2) 138+10 68 +0.70 72 144 Panel cutout dimensions Unit: mm Fig.
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