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IM-A-1048H April 2019

INSTRUCTION MANUAL

WGA-680A

INSTRUMENTATION AMPLIFIER

Thank you for purchasing KYOWA’s product WGA-680A Instrumentation
Amplifier.
Read this Instruction Manual carefully in order to make full use of the high
performance capabilities of the product.
Do not use the product in methods other than described in this Manual.

Generally, company names and trade names described in this Instruction Manual are trademarks or registered
trademarks of the companies.
This Instruction Manual may not be copied or reproduced, in whole or part, without consent of KYOWA.
Copyright © Kyowa Electronic Instruments Co., Ltd. All rights reserved.
The contents of the Instruction Manual are subjected to change without prior notice.
We assume no responsibility whatever for any damage resulting from the use of this product.

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Summary of Contents for WGA-680A Series

Page 1: ...her than described in this Manual Generally company names and trade names described in this Instruction Manual are trademarks or registered trademarks of the companies This Instruction Manual may not be copied or reproduced in whole or part without consent of KYOWA Copyright Kyowa Electronic Instruments Co Ltd All rights reserved The contents of the Instruction Manual are subjected to change witho...

Page 2: ...ALS 3 5 TO CONNECT OUTPUT TERMINALS 3 6 TO CONNECT ANALOG OUTPUT TERMINALS 3 7 TO CONNECT POWER SUPPLY 3 7 1 WGA 680A 00 04 AC models 3 7 2 WGA 680A 10 14 DC models 4 OPERATIONS AND FUNCTIONS 4 1 KEY OPERATIONS 4 1 1 Lock function 4 1 2 Key operations in MEASURING mode 4 1 3 Key operations in FUNCTION SELECTING mode 4 1 4 Key operations in SETTING mode 4 2 TO SELECT BRIDGE EXCITATION VOLTAGE 4 3 D...

Page 3: ...e specified bottom hold Time specified peak to peak hold 4 11 ANALOG OUTPUT D A FUNCTION 4 12 LIST OF FUNCTIONS 4 12 1 Various functions in FUNCTION SELECTING mode 4 12 2 Error codes 4 12 3 Table of functions 5 OPERATION TIMING 5 1 CONTROL INPUT SIGNALS HOLD COMMAND RESET COMMAND ZERO COMMAND 5 2 COMPARATOR OUTPUTS 5 3 DELAY TIME BETWEEN INPUT AND OUTPUT SIGNALS 6 TROUBLE SHOOTING 7 MAINTENANCE 8 ...

Page 4: ...s to ensure that all accessories are enclosed Instruction Manual 1 CD R For WGA 680A For BCD RS 232C RS 485 TEDS For CC Link Product Warranty 1 each Unit label 1 Flat head screw driver for control input output terminal blocks 1 OPTIONAL ACCESSORIES 100 VAC power cable length 2 m P 23 200 VAC power cable length 2 m P 28 6 conductor NDIS connector input cable U 29 to U 32 4 conductor NDIS connector ...

Page 5: ... Improper operation of the system may result in injury of the operator and physical damage of the system WARNING Warning Be sure to observe the safety precautions described in the WGA 680A Instruction Manual Power supply To prevent a fire hazard ensure that the power supply voltage specified for the product matches the local line voltage before connecting the system to the power supply The power s...

Page 6: ... the product in a magnetic field environment where the PC may be used Performance may be lowered and erroneous operation and troubles may result if it is used near a telemetry system microwave oven electronic furnace or any other equipment generating a strong magnetic field Do not use the product under poor conditions Operate the product within the range of power supply specs The power supply used...

Page 7: ...r our representatives Limited life parts used with the product are aluminum electrolytic capacitor All components do age and will fail WGA 680A REPLACEMENT BEFORE THE END OF SERVICE LIFE Preventive maintenance and replacement parts are a cost effective way of keeping the performance and extending the service life of the product Regardless of the replacement parts the product itself gradually deter...

Page 8: ...the building and near the product and display the functions as well Use switches and circuit breakers conforming to the IEC60947 1 and IEC60947 3 Use the product in area where elevation is 2000 m or below When mounting the product in your system approaches to satisfy the CE marking requirements vary with the configuration of the control panel to be used the other devices to be connected and wiring...

Page 9: ...h speed sampling 4000 times sec High speed D A conversion 4000 times sec Equips with 4 comparators HH comparator HI comparator LO comparator LL comparator Each comparator selects the High limit or Low limit Saves 4 patterns of comparator value and switches them Various hold functions Arbitrary point hold peak hold bottom hold peak to peak hold Indicated value 99999 to 99999 5 digits 3 calibration ...

Page 10: ... LED is ON 4 HOLD LED Displays the detecting interval status and holding interval status in the various HOLD modes For details see 4 9 HOLD FUNCTIONS 5 HH LED Comparator 3 LED Lights up when the measured value is HH limit value or more Flickers when the HH limit value is displayed 6 HI LED Comparator 1 LED Lights up when the measured value is HI limit value or more Flickers when the HI limit value...

Page 11: ...als COM Common Vo Voltage output terminal Io Current output terminal 4 INPUT terminals COM Common 1 ZERO command 2 HOLD command 3 RESET command 5 OUTPUT terminals COM Common 1 HH output comparator 3 output 2 HI output comparator 1 output 3 OK output 4 LO output comparator 2 output 5 LL output comparator 4 output 6 LINE IN terminals AC model FG GND terminal Be sure to connect the GND terminal to th...

Page 12: ...various transducers to the WGA 680A Section 3 4 To connect INPUT terminals Connect cables to the INPUT terminals Section 3 5 To connect OUTPUT terminals Connect cables to the OUTPUT terminals Section 3 6 To connect ANALOG OUTPUT terminals Connect cables to the ANALOG OUTPUT terminals Section 3 7 To connect the power supply Connect the AC power supply and ground the GND terminal Chapter 4 OPERATION...

Page 13: ...unt the WGA 680A by referring the following procedures 1 Cut out the panel according to the panel cut dimensions 2 Loosen the screws on the WGA 680A rear and remove the fitting metal 3 Set the WGA 680A into the panel frame as described in the right figure 4 Set the fitting metal from the rear 5 Tighten the screws and firmly fix the WGA 680A Fitting metal Screw Fitting metal Screw ...

Page 14: ...rminal blocks It is recommend to connect the crimp terminals with insulation coating to the terminal blocks Use crimp terminals with insulation coating equivalent to JIS C 2805 crimp terminal for copper wire 1 25 3 The terminal blocks have terminal block covers Before connecting the wires remove the terminal block cover Before connecting the crimp terminals remove the screws After completing wirin...

Page 15: ...randed wire 0 2 mm2 AWG24 to 1 25 mm2 AWG16 2 Press the lower button strongly by using the accessory flat head screw driver as described in the right figure 3 Carefully insert the twisted wires into the upper hole 4 Remove the flat head screw driver from the lower button And pull the wires gently to check if they are securely inserted 3 5 TO CONNECT OUTPUT TERMINALS Connection off OUTPUT terminals...

Page 16: ...wiring or for using the WGA 680A outdoors be sure to take additional countermeasures against noise For connecting multiple wires be sure to twist them together in advance After twisting make sure the wire is satisfied with the diameter to connect the terminal block 3 6 TO CONNECT ANALOG OUTPUT TERMINALS The pins and signals of the ANALOG OUTPUT terminals are as follows COM Common Vo Voltage output...

Page 17: ...e having more than power supply voltage Please do not press the terminal block too strongly How to confirm the power voltage is as follows 1 Measure the voltage between the AC power outlet terminals with the tester and confirm that the voltage is between 100 to 240 VAC 2 Measure the voltage between each end of the AC power outlet and the ground with the tester Confirm that the one is 0 V and the o...

Page 18: ...nd accidents DC power supply negative input terminal is insulated from FG Be sure to connect the GND terminal to the ground Or it may cause an electric shock hazard lower the performance and cause trouble 3 7 2 WGA 680A 10 14 DC models Do not forget to check that power voltage is from 10 to 30 VDC 10W Be sure to use the cable with rated voltage having more than power supply voltage Please do not p...

Page 19: ...n gage transducers and displays their values To go to the SETTING mode FUNCTION SELECTING mode and LOCK mode press keys in the MEASURING mode However the LOCK status limits the key operations For details see the following table Key operation Operations when the LOCK LED is OFF Operations when the LOCK LED is ON Press the ZERO key for 2 seconds Executes the DIGITAL ZERO function 0 is displayed as t...

Page 20: ...N SELECTING mode the mode goes to the function s SETTING mode To set numerical values Move digits Press the Change numerical values Press the key key SHIFT key Register pre set values Press the SET key The changed value is determined and stored registered in the internal memory When numeric values are not required to set is displayed Press the SET key in this status the function is executed To bac...

Page 21: ...dge excitation voltage is applied to the transducer 4 3 DIGITAL ZERO FUNCTION The DIGITAL ZERO function determines the reference point of the indicator The DIGITAL ZERO function adjusts the current displaying value to 0 The DIGITAL ZERO function has 2 methods key operation and the operation from the rear panel a Key operation Press the ZERO key for 2 seconds in the MEASURING mode The WGA 680A exec...

Page 22: ...ITAL ZERO function to register the reference point b To load the actual load Apply the actual load to the transducer Example Gently apply the 100 kg load c To go to ACTUAL LOAD CALIBRATION mode Press the FUNCTION key for 2 seconds The F 01 is displayed and the mode is FUNCTION SELECTING mode Press the key until the F 02 is displayed Press the SET key The WGA 680A is the ACTUAL LOAD CALIBRATION SET...

Page 23: ...ducers The current rated output is displayed and the highest order digit flickers Press the Example Set the indicated value 2 0040 Press the SET key d To set the indicated value The current indicated value Rated capacity is displayed and the highest order digit flickers Press the Example Set the indicated value 1000 Press the SET key e To set the decimal point position The current decimal point po...

Page 24: ...BRATION mode Press the FUNCTION key for 2 seconds The F 01 is displayed and the mode is FUNCTION SELECTING mode Press the key until the F 19 is displayed Press the SET key The WGA 680A is NUMERIC VALUE REGISTERING CALIBRATION SETTING mode b To set the initial value of transducers The current reference value is displayed and the highest order digit flickers Press the Press the SET key c To exit the...

Page 25: ...red value lowers the value HI limit value hysteresis value the HI output turns OFF LO comparator When the measured value lowers the LO limit value the LO output turns ON When the measured value exceeds the value LO limit value hysteresis value the LO output turns OFF LL comparator When the measured value lowers the LL limit value the LL output turns ON When the measured value exceeds the value LL ...

Page 26: ...press the SET key Initial values of the LL limit value and LO limit value are 99999 4 5 4 To set the hysteresis You are able to set the hysteresis width that turns OFF comparators which was once turned ON The set hysteresis is common in four comparators For details see F 10 of 4 11 1 Various functions in FUNCTION SELECTING 4 5 5 To assign comparators You are able to assign High limit or Low limit ...

Page 27: ...hat you set is registered the operation patterns 4 7 LEVEL TEST FUNCTION The LEVEL TEST function displays the pre set values as the indicated value The LEVEL TEST function is used for adjusting the external connected devices or testing the output of the WGA 680A a To set Display additional function 0 Disabled Displays the pre set value regardless of the measured value 1 Enable Displays the measure...

Page 28: ...key The WGA 680A starts measuring data based on the updating rate 4 9 DISPLAY STABILITY FUNVTION It is a function to reduce the variation of the displayed value Use this when you are concerned about variations in displayed values a Key operation Press the FUNCTION key for 2 seconds The F 01 is displayed and the mode is FUNCTION SELECTING mode The WGA 680A is F 27 SETTING mode b To select the updat...

Page 29: ...turned ON and after the lapse of delay time the WGA 680A detects the bottom value until the HOLD command is turned OFF The WGA 680A holds and displays the bottom value when the HOLD command is turned OFF The WGA 680A releases the holding operation when the RESET command is turned ON 7 Time specified bottom hold When the HOLD command is turned ON and after the lapse of delay time the WGA 680A detec...

Page 30: ...hold time specified bottom hold time specified peak to peak hold Disable The other HOLD modes f Key operation To operate the WGA 680A in the pre set HOLD mode press the HOLD key on the MEASURING mode The operation varies with the pre set hold mode 1 Arbitrary point hold peak hold bottom hold peak to peak hold time specified peak hold time specified bottom hold time specified peak to peak hold Pres...

Page 31: ...plays it Key operation The WGA 680A holds the instantaneous value when the HOLD key is pressed and after the lapse of delay time The WGA 680A holds the instantaneous value until the HOLD key is pressed again Control input The WGA 680A holds the instantaneous value when the HOLD command is turned ON and after the lapse of delay time The WGA 680A holds the instantaneous value until the HOLD command ...

Page 32: ...old The WGA 680A displays the bottom value during the detecting interval Key operation The detecting interval starts when the HOLD key is pressed and after the lapse of delay time When the HOLD key is pressed for the second time the detecting interval ends The WGA 680A displays values as normal Control input The detecting interval starts when the HOLD command is ON and after the lapse of delay tim...

Page 33: ...nd bottom value and displays the peak to peak value of the difference Key operation The detecting interval starts when the HOLD key is pressed and after the lapse of delay time When the HOLD key is pressed for the second time the detecting interval ends The WGA 680A displays values as normal Control input The detecting interval starts when the HOLD command is ON and after the lapse of delay time W...

Page 34: ...etecting interval starts when the HOLD key is pressed and after the lapse of delay time When the HOLD key is pressed for the second time the detecting interval ends and the holding interval starts The WGA 680A holds the value When the HOLD key is pressed for the third time the holding interval ends The WGA 680A displays values as normal Control input The detecting interval starts when the HOLD com...

Page 35: ...val starts The WGA 680A displays the detected value When the HOLD key is pressed for the third time the holding interval ends The WGA 680A displays values as normal Control input While the HOLD command is ON the WGA 680A holds the value detected when turning ON the HOLD command The detecting interval starts after the lapse of delay time When the HOLD command is turned OFF the detecting interval en...

Page 36: ...ation The detecting interval starts when the HOLD key is pressed and after the lapse of delay time The pre set the sdetect time is the detecting interval After the detecting interval ends the interval goes to the holding interval When the HOLD key is pressed for the second time the holding interval ends The WGA 680A displays values as normal Control input The detecting interval starts when the HOL...

Page 37: ...nterval starts after the lapse of delay time When the HOLD key is pressed for the second time the holding interval ends The WGA 680A displays values as normal Control input While the HOLD command is ON the WGA 680A holds the value detected when turning ON the HOLD command The detecting interval starts after the lapse of delay time When the RESET command is turned ON the holding interval ends The W...

Page 38: ...anual setting set the indicated value to output the voltage 0 V and 10 V In the automatic setting the indicated value for outputting 0 V and 10 V will be set automatically when calibration is executed 0 Manual setting 1 Automatic setting When you select automatic setting F 06 is displayed Execute procedure e and exit the setting c To set 0 V values Set the indicated value to have the output to 0 V...

Page 39: ...omatic zero compensation F 10 Hysteresis F 11 BCD output Logic F 12 Initialize F 13 Bridge excitation selection F 14 TEDS reading item F 16 RS communication settings F 17 Device ID F 18 CC Link F 19 Numeric value registering calibration F 20 Operation pattern F 21 Updating rate of displaying values F 22 Level test signals F 23 HH comparator comparator 3 functions F 24 HI comparator comparator 1 fu...

Page 40: ...abling or disabling the key code the new calibration value appears Remove the load To enable the key code The 00000 is displayed at the end In this status set the 00628 or 11111 and press the SET key Then the calibration value is updated After the settings the key code is enabled To update the calibration value next time you are required to enter the key code To disable the key code execute the F ...

Page 41: ...d at the end In this status set the 00628 or 11111 and press the SET key Then the calibration value is updated After the settings the key code is enabled To update the calibration value next time you are required to enter the key code To disable the key code execute the F 12 To disable the key code The 00000 is displayed at the end Press the SET key Then the calibration value is updated After the ...

Page 42: ...e SET key 4 Delay time The pre set delay time is displayed Range 0 00 to 9 99 sec Initial value 0 00 After changing the value press the SET key 5 Detect time The pre set detect time is displayed Range 0 01 to 9 99 sec Initial value 0 01 After changing the value press the SET key This function sets various hold functions For details see 4 10 HOLD FUNCTIONS Delays the start of holding intervals for ...

Page 43: ...othing Displays the following items 1 2 3 See below figure 1 Number of moving average times 2 Minimum scale 0 0 time Initial value 0 1 Initial value 1 2 times 1 2 2 4 times 2 5 3 8 times 3 10 4 16 times 4 20 5 32 times 5 50 6 64 times 6 100 7 128 times 7 200 8 256 times 8 500 9 512 times 9 1000 A 1024 times b 2048 times 3 Analog filter 0 300 Hz Initial value 1 100 Hz 2 30 Hz 3 10 Hz Select and cha...

Page 44: ...alue 0 2 Determination time Set the time and press the SET key Range 0 0 to 9 9 sec Initial value 0 0 3 Zero near zero Set the value and press the SET key Range 0 to 9 Initial value 0 Zero tracking When the determination time is passed and the absolute value of the measured value is within the zero compensation range this function executes the DIGITAL ZERO function and automatically makes the indi...

Page 45: ...13 and numeric value registering calibration F 19 are not initialized A function that returns the pre set values to the factory default The 00628 and 11111 are key codes The key codes prevents the calibration values from carelessly changing due to malfunctions F 13 BV selection The pre set value is displayed 0 10 V 1 2 V Initial value Set the value and press the SET key A function that selects and...

Page 46: ... For details see 4 6 PATTERN FUNCTION F 21 Updating rate of displaying values The pre set value is displayed 0 15 60 times sec Initial value 1 7 80 times sec 2 3 90 times sec 3 1 95 times sec 4 0 98 times sec 5 0 49 times sec 6 0 24 times sec 7 0 12 times sec Set the value and press the SET key This function sets the updating rate of the measured displaying value For details see 4 8 UPDATING RATE ...

Page 47: ...t Set the value and press the SET key Assign High limit or Low limit to HI comparator as comparator 3 F 25 LO Comparator Comparator 2 Functions The pre set value is displayed 0 High limit 1 Low limit Initial value Set the value and press the SET key Assign High limit or Low limit to LO comparator as comparator 3 F 26 LL Comparator Comparator 4 Functions The pre set value is displayed 0 High limit ...

Page 48: ...s side OFL3 The indicated value is below 99999 Decrease the input signal or reset the sensitivity registering value OFL4 The indicated value is above 99999 E 00 The sensitivity registering value is exceeding the specified range Use the sensitivity registering value 10000 or less per 0 1 mV V E 01 RAM Failure Failure Contact KYOWA or our representatives for repair E 02 Flash memory Failure E 03 TED...

Page 49: ...t is displayed at the 1000th digit 10e4 The 10000th digit lights up The decimal point is displayed at the 10000th digit F 03 Sensitivity registering calibration Rated output 3 2000 to 3 2000 2 0000 Rated input mV V Rated value 99999 to 99999 4000 The indicated value when the input is the rated input This parameter is linked to the rated value of the actual load calibration Decimal point position 1...

Page 50: ...rval specified and time specified only 1 Hold display mode Interval specified and time specified only Comparison mode 10e0 0 Normal comparison mode 0 Compares data normally 1 Hold comparison mode Compares data during the holding operations Delay time 0 00 to 9 99 0 00 The time to starting the detection interval from being turned on HOLD command Detect time 0 01 to 9 99 0 01 Time specification PH B...

Page 51: ...cy 100Hz 2 30Hz Cutoff frequency 30Hz 3 10Hz Cutoff frequency 10Hz F 08 Additional value 99999 to 99999 0 Display offset F 09 Automatic ZERO compensation ZERO compensation range 0 to 99999 0 The range of the Automatic ZERO compensation Determination time 0 0 to 9 9 0 0 The determination time of the Automatic ZERO compensation Zero near zero 0 to 9 0 The compensation range that automatically change...

Page 52: ... sec Thinning 1 8192 time 2048msec 6 0 24 times sec Thinning 1 16384 time 4096msec 7 0 12 times sec Thinning 1 32768 time 8192msec F 22 Level Test Signals Display additional function 10e0 0 Disabled 0 Outputs the LEVEL TEST values only 1 Enable Outputs a value current indicated value LEVEL TEST value Level Test values 99999 to 99999 0 Level Test ON OFF 10e0 0 OFF 0 Turns OFF the LEVEL TEST values ...

Page 53: ...PERATION TIMING 5 1 CONTROL INPUT SIGNALS HOLD COMMAND RESET COMMAND ZERO COMMAND 5 2 COMPARATOR OUTPUTS 5 3 DELAY TIME BETWEEN INPUT AND OUTPUT SIGNALS Delay times between the input and analog output D A Maximum 12 ms ...

Page 54: ...he following Noisy part The measured value varies The operation failed due to noise Take appropriate countermeasures for removing the noise For details see the following Noisy part Confirm the input cables are connected correctly Connect them correctly and keep them from moving The measured value is incorrect Confirm the transducer connections are correct Correctly connect them Confirm the calibra...

Page 55: ... should be serviced for scheduled maintenance Maintenance service should be performed at the intervals specified below 1 Calibration of apparatus An annual maintenance inspection is recommended to ensure the operation and measuring accuracy of the product Must be returned to KYOWA for the scheduled maintenance inspection 2 Replacement of consumable parts The aluminum electrolytic capacitor is a co...

Page 56: ...imes s 10 A D resolution 24 bits 11 Calibration Actual load calibration Sensitivity registering calibration and Numeric value registering calibration 12 Smoothing function Filter 10 30 100 and flat 300 Hz Attenuation characteristics 12 dB oct Moving average None 2 4 8 16 32 64 128 256 512 1024 and 2048 times Minimum scale 1 2 5 10 20 50 100 200 500 and 1000 counts 13 Automatic ZERO compensation fu...

Page 57: ...nge 99999 Display 7 segment LED Character Height 14 mm Color red green orange Update Speed 0 12 0 24 0 49 0 98 1 95 3 90 7 80 and 15 6 times s Display Mode normal at hold Determinator 5 points HH HI OK LO LL Status display 2 points HOLD LOCK 19 Analog output Voltage Output 10 V Load resistance 2 k Possible to scaling arbitrarily Current Output 4 to 20 mA Load resistance 500 or less Corresponds to ...

Page 58: ...W 96 H 126 D mm Excluding protrusions 25 Weight Approx 750 g Without option 26 Operating temperature range and humidity range 10 to 50 C 80 RH or less Noncondensing 27 Applicable standard EMC directive EN61326 1 Class A Low voltage directive 1 EN61010 1 EN61010 2 030 Installation category pollution degree 2 measurement category O 1 AC models only RoHS directive EN50581 ...

Page 59: ...IM A 1048H 58 9 OUTSIDE DRAWING 9 1 WGA 680A 00 No option AC model Unit mm ...

Page 60: ...IM A 1048H 59 9 2 WGA 680A 10 No option DC model Unit mm ...

Page 61: ...IM A 1048H 60 Kyowa Electronic Instruments Co Ltd 3 5 1 Chofugaoka Chofu Tokyo 182 8520 Japan http www kyowa ei com ...

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