ONO SOKKI - Digital Gauge FAQ - Troubleshooting

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Digital Gauge FAQ

Troubleshooting - Flashing of the display

• Display of the measurement error (flashing of the display) is the same for all models of the DG-4000 series.

• When the measurement error occurs, the display starts flashing and error output of the BCD out is turned ON. This is not an error of the DG-4000 series.

• Be sure to ground the grounding terminal for safe operation and noise elimination.

1. Cause and countermeasure of the measurement error

Causes	Countermeasures
When the velocity of the sensor spindle is exceeded the maximum response velocity of the GS series Digital Gauge Sensor.	Lower the velocity of the target measurement object or the velocity of the sensor to make the velocity of the sensor spindle lower than the maximum response velocity or less.
The maximum response velocity is exceeded by the shock when the tip of the spindle strikes the target measurement object.	Same as the above.
When the sensor input signal is affected by external noise.	Change the wiring route if the sensor signal cable is wired near a noise generating source. (Motor, electromagnetic valve, etc.) Do not extend the sensor signal cable unnecessarily long. Be sure to ground the unit properly. Use the 2 mm² or more soft copper wire and ground maximum extension length of 20 m.
When the "90 degrees phase difference" of the sensor output signal is off to the correct position. (When the display of the zero point does not show zero but gradually becomes larger in every measurement.)	Replace the sensor.
When the BCD connector input/output signal is affected by external noise. (When the BCD connector is removed, it is returned to normal operation.)	Use the shielded line for the signal code. Make the length around 3 m and do not extend unnecessarily long. Change the wiring route if the sensor signal cable is wired near a noise generating source. (Motor, electromagnetic valve, etc.)
When the terminal block of the input signal is affected by external noise.	Same as the above.

2. The confirmation of the GS sensor error.

Causes	Countermeasures
When the display count of the GS sensor is not increased or decreased (UP/DOWN) even if you slowly move the spindle up and down with the finger.	Replace the GS sensor.
When the display shows not 0 but remaining numeric value even if you reset at the reference point and move the spindle up and down to return to the reference point.
The spindle does not move smoothly.

3. Return from the measurement error.

After the cause of the error is removed with each countermeasure, press the RESET button of the front panel of the DG-4000 series to reset the operation. For the reset methods for other errors such as a terminal block input, please refer to the specifications of each model.

Revised:2000/12/08

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