Transtechnik ServoPac GDPS, Руководство пользователя

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ServoPac GDPS – Power supply unit
Chapter 4 - Troubleshooting
Chapter 4 – Troubleshooting
4.1 – UNDERVOLTAGE FAULT
When switching on the auxiliary 24 V
DC
supply, the ServoPac GDPS unit always displays the undervoltage fault.
The undervoltage fault will go out when switching on the power voltage, after a few seconds time delay that
corresponds to the soft start of the power capacitors.
The soft start system will be activated again when the voltage will drop below the undervoltage threshold.
If the fault display remains after switching on the power supply:
- Check that the power supply is actually on and the actual voltage value. The DC bus voltage value can
be measured by mean of the digitizing oscilloscope.
4.2 – OVERVOLTAGE FAULT
The overvoltage fault is used to protect the drive against high voltage values on the DC bus.
This fault can have different origins:
- Check that the braking resistor is not open.
- Check that the operating voltage is correctly set up according to the mains voltage (SW1 configuration).
- When the braking I²t protection becomes active, it prevents the braking resistor from switching.
Check that the braking ability is sufficient for the application.
In this case, a lower ohmic value may solve the problem.
4.3 – BRAKING TRANSISTOR FAULT
The braking transistor fault is used to protect the ServoPac GDPS unit and the braking resistor against a short
circuited transistor.
This fault can have two different origins:
- If no braking resistor is connected, the fault will be displayed.
Check that a braking resistor is connected and not opened.
- Else the braking transistor has been destroyed. In this case, the ServoPac GDPS unit must be repaired.
4.4 – CONFIGURATION FAULT
The configuration fault is used to prevent a wrong configuration by means of the SW1 miniswitch.
- Check the SW1 miniswitch code in the table.
Attention: The opening of the branch-circuit protective device may be an indication that a fault
has been interrupted. To reduce the risk of fire or electric shock, current-carrying parts and
other components of the controller should be examined.