WEG CFW-11 Series - TROUBLESHOOTING AND MAINTENANCE; Operation of the Faults and Alarms

Troubleshooting and Maintenance
6
CFW-11 | 6-1
6 TROUBLESHOOTING AND MAINTENANCE
This chapter:
- Lists all faults and alarms that may occur.
- Indicates the possible causes of each fault and alarm.
- Lists most frequent problems and corrective actions.
- Presents instructions for periodic inspections and preventive
maintenance in the equipment.
6.1 OPERATION OF THE FAULTS AND ALARMS
When a fault is detected ("FAULT" (FXXX)):
The PWM pulses are blocked.
The keypad displays the "FAULT" code and description.
The "STATUS" LED starts flashing red.
The output relay set to "NO FAULT" opens.
Some control circuitry data is saved in the EEPROM memory:
- Keypad and EP (Electronic Pot) speed references, in case the function "Reference backup" is enabled in
P0120.
- The "FAULT" or alarm potentiometer code that occurred (shifts the last nine previous faults and alarms).
- The state of the motor overload function integrator.
- The state of the operating hours counter (P0043) and the powered-up hours counter (P0042).
Reset the inverter to return the drive to a "READY" condition in the event of a "FAULT". The following reset options
are available:
Removing the power supply and reapplying it (power-on reset).
Pressing the operator key (manual reset).
Through the "Reset" soft key.
Automatically by setting P0340 (auto-reset).