Fault codes, Major fault – Yaskawa GPD 506/P5 Section Three User Manual
Page 7
PP.P5G5.03.Troubleshoot
Page 7
Rev. 06/11/2003
The inverter output is short-circuited.
SC
Short Circuit
sc
Detects if the DC bus fuse has opened.
PUF
DC Bus Fuse Open
PUf
Possible Cause(s):
Shorted output transistor, shorted main circuit component.
Corrective Action:
Remove power from the inverter and disconnect the motor. Perform the
checks without/with power starting on page 10. Replace the shorted component(s), then
replace the defective fuse.
505
Possible Cause(s):
Shorted inverter output phase to phase, shorted motor, locked rotor.
Corrective Action:
Remove the motor and run the inverter without the motor. Check the
motor for a phase to phase short. Check the inverter for a phase to phase short at the output.
Fault Codes
Major Fault
- Motor coasts to a stop, the fault is displayed on the digital
operator, and the fault relay is activated.
506
√
515
√