KYOWA WGA-680A Series User Manual (English)

Questions and Answers:

D
Dr. Madison Bartlett DVMAug 4, 2025
How to reduce noise in KYOWA Amplifier?
- K
  Katherine LeeAug 4, 2025
  To address noise issues with your KYOWA Amplifier, ensure the GND terminal is properly connected to the ground. Also, avoid placing the input cable close to equipment like inverter motors, machine tools, welding machines, or AC motor power supplies. Keep the input cable separate from the power source. Additionally, you can reduce noise by adjusting the low-pass filter or moving average of the smoothing function. Setting the cutoff frequency of the low-pass filter to 2 to 5 times the input signal frequency may also help.
M
Matthew JonesAug 10, 2025
Why is the measured value incorrect on my KYOWA Amplifier?
- E
  elizabeth32Aug 10, 2025
  If the measured value on your KYOWA Amplifier is incorrect, first, check that the transducer connections are properly configured. Also, verify that the calibration settings and bridge excitation voltage settings are accurate.
J
Jessica RobinsonAug 15, 2025
What to do if the measured value varies on KYOWA Amplifier?
- H
  Harold TravisAug 15, 2025
  If the measured value from your KYOWA Amplifier varies, take appropriate countermeasures for removing the noise. Also, ensure that the input cables are correctly connected and secured to prevent movement.
J
John DouglasAug 22, 2025
What to do if KYOWA Amplifier operation stops and accepts no instruction at all?
- M
  Michael Smith MDAug 22, 2025
  If your KYOWA Amplifier stops operating and does not respond to any instructions, this could be due to noise interference. Try turning the power OFF and then ON again. If the issue persists, implement appropriate measures to eliminate noise from the operating environment and power supply.
S
Sheryl WhiteAug 27, 2025
What to do if KYOWA Amplifier displays error E-01 or E-02?
- S
  stokesjohnAug 27, 2025
  If your KYOWA Amplifier displays an "E-01" or "E-02" error, stop using the product and contact KYOWA or our representatives, as this indicates a product failure.

KYOWA WGA-680A Series Specifications

General

Brand	KYOWA
Model	WGA-680A Series
Category	Amplifier
Language	English

Summary

1. OUTLINE OF PRODUCT

1-1. Outline

General description of the WGA-680A Instrumentation Amplifier.

1-2. Features

Lists key features and capabilities of the WGA-680A.

1-3. Model

Details the different WGA-680A models and their specifications.

SAFETY PRECAUTIONS

Prior to Use

Important information and symbols for safe operation before using the product.

LIMITED LIFE PARTS AND PREVENTIVE MAINTENANCE

Replacement Before End of Service Life

Recommendations for product replacement and preventive maintenance.

Notations Used in Manual

Explains notations used in the manual for clarity and reference.

IMPORTANT PRECAUTIONS WHEN USING WGA-680A

CE Marking Precautions

Safety and installation precautions related to CE marking requirements.

2. CONTROLS AND FUNCTIONS

2-1. Front Panel

Details the controls and indicators on the front panel of the WGA-680A.

2-2. Rear Panel

Describes the connectors and terminals on the rear panel of the WGA-680A.

3. CONNECTION AND DEFAULT SETTING

3-1. Procedures for Measurements

Outlines the essential steps for connecting and preparing the WGA-680A for measurements.

3-2. Panel Mounting

Provides instructions and dimensions for panel mounting the WGA-680A unit.

3-3. Connecting Transducers

Instructions for connecting strain gauge transducers to the WGA-680A terminals.

3-4. Input Terminals

Details on connecting external switches or signals to the input terminals.

3-5. Output Terminals

Explains how to connect cables to the open collector output terminals.

3-6. Analog Output Terminals

Instructions for connecting analog output signals (voltage or current).

3-7. Power Supply Connection

Procedures for connecting AC and DC power supplies to the WGA-680A unit.

4. OPERATIONS AND FUNCTIONS

4-1. Key Operations

Details key operations, including lock function and measuring mode interactions.

4-2. Bridge Excitation Voltage Selection

How to select and set the bridge excitation voltage for transducers.

4-3. Digital Zero Function

Function to set the display to zero, with key and rear panel operations.

4-4. CALIBRATION FUNCTION

Covers actual load, sensitivity, and numeric value calibration procedures.

4-5. COMPARATOR FUNCTIONS

Explains comparator functions, settings, and output conditions.

4-6. Pattern Function

Registering and selecting limit values in 4 operation patterns.

4-7. Level Test Function

Function for adjusting external devices or testing output using pre-set values.

4-8. Updating Rate of Displaying Values

Adjusting the display update rate for easier reading of changing values.

4-9. Display Stability Function

Function to reduce variations in displayed values.

4-10. HOLD FUNCTIONS

Details various hold modes, operations, and settings.

4-11. Analog Output (D/A) Function

Converts measured values to analog output signals (voltage or current).

4-12. List of Functions

Lists and categorizes various functions accessible via the FUNCTION SELECTING mode.

5. OPERATION TIMING

5-1. Control Input Signals

Timing diagrams for control input signals like HOLD, RESET, and ZERO.

5-2. Comparator Outputs

Timing and hysteresis for comparator outputs (HI, LO).

5-3. Delay Time Between Input and Output Signals

Specifies the maximum delay time for analog output.

6. TROUBLE SHOOTING

7. MAINTENANCE

Calibration of Apparatus

Recommends annual maintenance inspection and calibration of the apparatus.

Replacement of Consumable Parts

Information on consumable parts and recommended overhaul periods.

8. SPECIFICATIONS

9. OUTSIDE DRAWING

9-1. WGA-680A -00: No option (AC model)

Shows the external dimensions and connection points for the AC model.

9-2. WGA-680A -10: No option (DC model)

Shows the external dimensions and connection points for the DC model.

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