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Q : How to fix the “Output Phase Loss (SPO)” fault on GD200A-075G-4 used for a blow molding machine?
A: Inverter Model: GD200A-075G-4
Application condition: Ordinary asynchronous motor speed regulation for blow molding machine
Fault phenomenon: output phase loss reported after several months of operation.
How to solve it?
Cause analysis:
The main circuit of the VFD was found to be normal. The output voltage of the VFD measurement without connecting the motor is normal. Immediately run and report SPO after connecting the motor. Upon investigation, it was found that there was a cabinet between the VFD and the motor where the coil of an output reactor had burnt out and discolored.
Solution: Replace the reactor and ensure normal operation.
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