Allen-Bradley PowerFlex 4 User Manual

Troubleshooting 4-5
Motor does not Start.
Drive does not Start from Integral Keypad.
Common Symptoms and Corrective Actions
Cause(s) Indication Corrective Action
No output voltage to the motor. None Check the power circuit.
 Check the supply voltage.
 Check all fuses and disconnects.
Check the motor.
 Verify that the motor is
connected properly.
Check the control input signals.
 Verify that a Start signal is
present. If 2-Wire control is used,
verify that either the Run
Forward or Run Reverse signal is
active, but not both.
 Verify that I/O Terminal 01 is
active.
 Verify that P036
[Start Source]
matches your configuration.
 Verify that A095
[Reverse
Disable] is not prohibiting
movement.
Improper boost setting at initial
start-up.
None Set A084
[Boost Select] to option 2
“35.0, VT”.
Cause(s) Indication Corrective Action
Integral keypad is not enabled. Green LED above Start key is
not illuminated.
 Set parameter P036
[Start
Source] to option 0 “Keypad”.
 Set parameter A051
- A052
[Digital Inx Select] to option 5
“Local” and activate the input.
I/O Terminal 01 “Stop” input is
not present.
None Wire inputs correctly and/or install
jumper.

Allen-Bradley PowerFlex 4 Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 4
Category	Controller
Language	English