Rockwell Automation LPM20 Liquid-Cooled AC Drive with High Performance Drive Control - Manual (Page 58)

3-4 Troubleshooting
Common Symptoms and
Corrective Actions Drive does not Start from Start or Run Inputs wired to the terminal block.
Drive does not Start from HIM.
Drive does not respond to changes in Speed Command.
Cause(s) Indication Corrective Action
Drive is faulted. Flashing red
status light. Clear the fault:
• Press HIM Stop key if HIM is control
source.
• Cycle power.
• Set [Fault Clear] parameter to 1.
• “Clear Faults” on the HIM Diagnostic
menu.
Incorrect input wiring. See
Figure 1.11 for wiring examples.
None Wire inputs correctly and/or install jumper.
Incorrect digital input programming.
• Mutually exclusive choices have
been made (i.e., Jog and Jog
Forward).
• Exclusive functions (i.e, direction
control) may have multiple inputs
configured.
• Stop is factory default and is not
wired or is open.
None Program [Digital Inx Sel] parameter for correct
inputs.
Start or Run programming may be missing.
Flashing yellow
status light and
“DigIn CflctB”
indication on
LCD HIM.
[Drive Status 2]
shows type 2
alarm(s).
Program [Digital Inx Sel] parameter to resolve
conflicts.
Remove multiple selections for the same
function.
Install stop button to apply a signal at stop
terminal.
Cause(s) Indication Corrective Action
Drive is programmed for 2 wire
control. HIM Start button is disabled
for 2 wire control. None If 2 wire control is required, no action needed.
If 3 wire control is required, program [Digital
Inx Sel] parameter for correct inputs.
Active fault. Flashing or
steady red LED. Reset fault.
Enable input is open. Flashing yellow
LED. Close terminal block enable input.
Cause(s) Indication Corrective Action
No value is coming from the source
of the command. LCD HIM
Status Line
indicates “At
Speed” and
output is 0 Hz. 1. If the source is an analog input, check
wiring and use a meter to check for
presence of signal.
2. Check [Commanded Freq] parameter for
correct source.
Incorrect reference source has been
programmed. None 3. Check [Speed Ref Source] parameter for
the source of the speed reference.
4. Reprogram [Speed Ref A Sel] parameter
for correct source.
Incorrect reference source is being
selected via remote device or digital
inputs. None 5. Check [Drive Status 1] parameter, bits 12
and 13 for unexpected source selections.
6. Check [Dig In Status] parameter to see if
inputs are selecting an alternate source.
7. Reprogram digital inputs to correct “Speed
Sel x” option.