Fault Diagnostic Methods - Delta VFD-VJ Series User Manual

The Hybrid servo drive has warning messages and protection functions such as over-voltage, low-voltage,
over-current, etc. Once a fault occurs, the protection function is activated, the Hybrid servo drive stops
output, and the motor coast to stop. Please look up the cause for the fault and perform the countermeasure
according to the error message of the Hybrid servo drive. The error records are stored in the internal
memory of the Hybrid servo drive (last six error messages can be recorded) and can be read out through
the keypad or through the communication port.
After a fault occurs, the RESET button will be effective only 5 seconds after the fault
condition is released.
For Hybrid servo drives of power rating
minutes (10 minutes for
indicator light is off and the measured DC voltage across the terminals
below DC 25V before opening the cover for inspection.
5. Fault Codes and Descriptions
5-1 Error Messages
5-2 Over Current OC
5-3 Ground Fault GFF
5-4 Over Voltage OV
5-5 Low Voltage Lv
5-6 Over Heat OH1
5-7 Overload OL
5-8 Phase Loss PHL
5-9 Electromagnetic/Induction Noise
5-10 Environmental Condition
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30kW) after the power is shut down to confirm that the
5-1

5. Fault Diagnostic Methods

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22kW, it is necessary to wait for 5
and is