Troubleshooting 4-5
PowerFlex 4M Adjustable Frequency Drive FRN 1.xx - 2.xx User Manual
Publication 22F-UM001D-EN-E
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 P106
[Start Source]
matches your configuration.
• Verify that A434
[Reverse
Disable] is not prohibiting
movement.
Improper boost setting at initial
start-up.
None Set A453
[Boost Select] to option 2
“35.0, VT”.
Drive is Faulted Flashing red status light Clear fault.
• Press Stop
• Cycle power
• Set A450
[Fault Clear] to option 1
“Clear Faults”.
• Cycle digital input if t201
- t202
[Digital Inx Sel] is set to option 7
“Clear Fault”.
Cause(s) Indication Corrective Action
Integral keypad is not enabled. Green LED above Start key is
not illuminated.
• Set parameter P106
[Start
Source] to option 0 “Keypad”.
• Set parameter t201
- t202 [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.
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