YASKAWA CIMR-F7Z44P0 User Manual page 145

Digital
Operator Display
Control Power Supply Undervoltage
UV2
Undervoltage of the control circuit when
CTL PS Undervolt
running
Soft Charge Circuit Fault
UV3
The pre-charge contactor opened while the
MC Answerback
Drive was running
Some features within the PI function group cause the Drive to shut down momentarily (e.g. Sleep Function,
Snooze Function, Feedback Loss feature etc.) Upon recovery from the conditions that activate these features,
WARNING
the Drive may start unexpectedly. Therefore, when enabling these features take appropriate measures to
notify personnel working with this equipment that unexpected starting may occur.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Table 6.1 Fault Displays and Processing
Description
External load connected
pulling down the Drive power
supplies
Contacts on the soft charge
contactor are dirty and the soft
charge contactor does not
function mechanically
Diagnostic & Troubleshooting 6 - 8
Cause Corrective Action
Cycle power off and on to the
Drive
Repair or replace the Power PCB/
Gate Drive PCB
Remove all control wiring and
test Drive
Cycle power off and on to the
Drive
Check the condition of the soft
charge contactor
Repair or replace the Power PCB/
Gate Drive PCB