WGA-680A
Instrumentation Amplifier

Summary
· CC-Link optional available
· High-performance processing (Sampling speed: 4000 times/s, 24-bit AD converter)
· Substantial comparison and Judgment functions (Extra high, high, OK, low, and extra low)
· Analog output (DA)
· Display: -99999 to 99999
Features
The WGA-680A is an Instrumentation Amplifier which can display the physical quantity of an input sensor.
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WGA-680A
Instrumentation Amplifier

Models | WGA-680A-00: AC model No option WGA-680A-01: AC model BCD & TEDS WGA-680A-02: AC model RS-232C & TEDS WGA-680A-03: AC model RS-485 & TEDS WGA-680A-04: AC model CC-Link WGA-680A-10: DC model No option WGA-680A-11: DC model BCD & TEDS WGA-680A-12: DC model RS-232C & TEDS WGA-680A-13: DC model RS-485 & TEDS WGA-680A-14: DC model CC-Link |
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Specifications
Channels | 1 |
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Applicable Sensors | Strain-gage transducers (4-wire) |
Compatible Bridge Resistance | 87.5 to 1000 Ω (Up to four 350 Ω transducers connected in parallel.) |
Bridge Excitation | 10, 2 VDC, selectable |
Measuring Range | ±3.2 mV/V (Input range including zero adjustment range) |
Zero Adjustment Range | Within measurement range (Not retained when power supply interrupted) |
Nonlinearity | Within ±(0.02% FS +1digit) |
Stability | Zero point: Within ±0.25 μVRTI/ºC Sensitivity: Within ±0.01%/ºC |
Sampling Speed | 4000 times/s |
AD Resolution | 24 bits |
Calibration | Actual load calibration Sensitivity registering calibration Numeric value registering calibration |
Smoothing Functions | Analog Filters: 10, 30, 100, 300 Hz Attenuation: -12 ±1 dB/oct. Moving average: 0, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, and 2048 times Min. scale: 1, 2, 5, 10, 20, 50, 100, 200, 500, and 1000 counts |
Auto Zero Compensation | Zero Tracking (Auto digital zero in the preset range) Approximated zero compensation: Indication is made zero when the reading is in a preset range of 0 to 9. |
Adding Functions | Setting range: ±99999 |
Original Value Display Functions | ±3.2000 mV/V (5 digits) Accuracy: Within ±0.1%FS |
Comparator Functions | Points: 4 Patterns: Registers 4 groups of pattern files (comparative values) and enables switching through setting of functions Types: Extra high (HH) High (HI) Low (LO) Extra low (LL) Setting range: ±99999 Hysteresis: 0 to 99999 Comparison modes: Normal, at hold High low assignment: Enables assigning high or low to each comparator. |
Judgement Function | Point: 1 Type: OK |
Hold Functions | Digital peak/bottom hold (Without analog peak/bottom hold) Types: Arbitrary point hold Peak hold Bottom hold Peak to peak hold Interval definition peak hold Time specification peak hold Interval definition peak to peak hold Time specification peak to peak hold Delay time: 0.00 to 9.99 s Detect time: 0.01 to 9.99 s |
Display | Range: ±99999 (Decimal point to be put anywhere.) Indicator: 7-segment LED Character height: 14 mm Colors: Red, green, and orange Update: 0.12, 0.24, 0.49, 0.98, 1.95, 3.90, 7.80, and 15.6 times/s (In normal mode) Modes: Normal/hold Comparators: 5 points (HH, HI, OK, LO, LL) Status: 2 points (HOLD, LOCK) |
Analog (DA) Output | Voltage output: ±10 V (Load resistance 2 k Ω or more) Arbitrary scaling possible Current output: 4 to 20 mA (Load resistance 500 Ω or less) Corresponds to voltage output of 0 to 10 V. Conversion speed: 4000 times/s Nonlinearity: Within ±0.1%FS Setting contents: Display value of zero, display value of full scale |
Control Input | Points: 3 Types: Zero command, hold command, and reset command Signal formats: Non-voltage contact signal or open collector (NPN) (Capacity: 12 VDC, 5 mA or more) |
Control Output | Points: 5 Types: HH, HI, OK, LO, and LL Formats: Open collector (NPN) (30 VDC, 20 mA max.) |
Level Test Functions | Display of arbitrary values possible Display additional functions: Disabled, enabled Setting range: ±99999 Level test: ON, OFF |
Power Supply | AC Models 100 to 240 VAC, power consumption: 20 VA or less DC Models 10 to 30 VDC, power consumption: 10 W or less |
Dimensions | 96 W ×96 H ×126 D mm (Excluding protrusions) |
Weight | Approx. 750 g (Without option) |
Operating Temperature | -10 to 50 ºC |
Operating Humidity | 20 to 80% (Non-condensing) |
Compliance | Directive 2014/30/EU (EMC) Directive 2014/35/EU (LVD) (AC model only) Directive 2011/65/EU, (EU) 2015/863 (10 restricted substances) (RoHS) |
Standard Accessories | Instruction manual (CD-R) Unit seal Screwdriver (-) |
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Optional Accessories | AC power cable for 100 VAC P-23 AC power cable for 200 VAC P-28 Input cable for NDIS4102 (7 pins) connector (6 conductors) U-29 (50 cm) U-30 (1 m) U-31 (2 m) U-32 (5 m) Input cable for NDIS4102 (7 pins) connector (4 conductors) U-33 (50 cm) U-34 (1 m) U-35 (2 m) U-36 (5 m) Wire mount socket 35505-6000-BOM GF (WGA-680A-04/14) Branch connector (type-Y) 35715-L010-B00 AK (WGA-680A-04/14) Termination connector 35T05-6M00-BOM GF (WGA-680A-04/14) |
Option Specifications
BCD Output
Output | Data: 20 bits (4-bit×5) POL (Minus polarity) Over EOC (End of Conversion) Holding section Detecting section Output format: Open collector (NPN) (30 VDC, 20 mA max.) |
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Input | Points: 2 (Hold, Output prohibited) Format: Open collector (NPN) or non-voltage contact signal (Capacity: 12 VDC, 5 mA) |
Output Rate | Approx. 15.6, 31.3, 62.5, and 125 times/s |
Output Logic | Data logic: Positive logic, negative logic EOC logic: Positive logic, negative logic Polarity logic: Positive logic, negative logic |
RS-232C
Signal System | RS-232C full duplex system |
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Communication Methods | Synchronous |
Baud Rate | 2400, 4800, 9600, 19200 bps |
Bit Configuration | Data bits: 7 Stop bit: 1 Parity bit: Odd number Flow control: None |
RS-485
Signal System | RS-485 half duplex system |
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Baud Rate | 2400, 4800, 9600, 19200 bps |
Bit Configurations | Data bits: 7 Stop bit: 1 Parity bit: Odd number |
Flow Control | None |
Device ID | 1 to 99 |
TEDS
Applicable Transducers | Should have the information according to IEEE template No. 33 (Cable length should be 30 m or less.) |
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Interfaces | Compatible with IEEE1451.4 Mixed Mode Transducer Interface Class 2 |
Calibration Function | Automatic sensitivity registration by reading TEDS data |
CC-Link
Version | 1.10 |
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Station Types | Remote device station |
Occupied Stations | 1, 2, 4 |
Baud Rate | 10 M, 5 M, 2.5 M, 625 k, and 156 k bps |
Slave Stations | 1 to 64 |
Connection Cable | CC-Link version 1.10 compliant cables (3-conductor twisted pair shielded cable) |
Dimensions

AC power cables
P-23
2-pin plug to 2 conductors, crimp-style terminal (M3)

Specifications
Length | Approx. 2.0 m |
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Object Product Model | WGA-100B, 101A, 120A, 200A, 650B, 680A, 710C, 910A WGC-140A WGI-400A |
Others | For 100 VAC |
P-28
3 round-shape terminals to 3 conductors, pre-soldering at the cable tip

Specifications
Length | Approx. 2.0 m |
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Object Product Model | WGA-100B, 101A, 120A, 200A, 650B, 680A, 710C, 910A WGC-140A WGI-400A |
Others | For 200 VAC |