Allen-Bradley PowerFlex 700H Hardware Service Manual page 14

1-6 Troubleshooting and Error Codes
No Output Voltage
Use this procedure when there is no voltage present at the drive output
terminals, even though the drive indicates the motor is running:
DC Bus
Measure DC Bus
Voltage within
Voltage
Specification?
Measure Power
Supply Voltages
Check Board
Connections
Replace Main
Control Board
Replace Power
Interface Board
(on 700S)
Perform forward
No diode tests on
Rectifying Module
Examine Bus
Capacitors for
Yes
Charring and
Damaged Reliefs
Replace Power
Voltages within
No
Specification?
Yes
Does Drive
Run?
No
Does Drive
Run?
No
Does Drive
Run?
No
Replace Voltage
Feedback Board
(on 700S)
Rectifying
Module OK?
Yes
Capacitors
OK?
Yes
Supply
Replace Rectifying
No
Module
Replace
No
Capacitors