Allen-Bradley PowerFlex 40P - Page 121

Troubleshooting 4-7
Drive does not Start from Start or Run Inputs wired to the terminal block.
Drive does not respond to changes in speed command.
Cause(s) Indication Corrective Action
Drive is Faulted Flashing red status light Clear fault.
• Press and hold Up Arrow key for
3 seconds.
• Cycle power
• Set A100
[Fault Clear] to option 1
“Clear Faults”.
• Cycle digital input if A051
- A054
[Digital Inx Sel] is set to option 7
“Clear Fault”.
Incorrect programming.
• P036
[Start Source] is set to
option 5 “Comm Port”.
None Check parameter settings.
Incorrect input wiring.
See 1-22
for wiring examples.
• 2 wire control requires Run
Forward, Run Reverse or Jog
input.
• 3 wire control requires Start and
Stop inputs
• Stop input is always required.
None Wire inputs correctly and/or install
jumper.
If using the DriveGuard Safe-Off
Option (Series B) board, verify that
inputs are active.
Incorrect Sink/Source DIP Switch
setting.
None Set switch to match wiring scheme.
Cause(s) Indication Corrective Action
No value is coming from the
source of the command.
The drive “Run” indicator is lit
and output is 0 Hz.
• Check b012
[Control Source] for
correct source.
• If the source is an analog input,
check wiring and use a meter to
check for presence of signal.
• Check b002
[Commanded Freq]
to verify correct command.
Incorrect reference source is
being selected via remote
device or digital inputs.
None • Check b012
[Control Source] for
correct source.
• Check b014
[Dig In Status] to
see if inputs are selecting an
alternate source. Verify settings
for A051
- A054 [Digital Inx Sel].
• Check P038
[Speed Reference]
for the source of the speed
reference. Reprogram as
necessary.
• Review the Speed Reference
Control chart on page 1-27
.