Troubleshooting And Maintenance; Operation Of Faults And Alarms - WEG CFW-11 Series User Manual

TROUBLESHOOTING AND MAINTENANCE

This chapter presents:
- A lists of all the faults and alarms that may occur.
- The possible causes of each fault and alarm.
- A lists of the most frequent problems and corrective actions.
- Instructions for periodic inspections and preventive maintenance
on the equipment.

6.1 OPERATION OF FAULTS AND ALARMS

When a fault is detected (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 data is saved in the control circuit EEPROM memory:
- Keypad and EP (Electronic Pot) speed references, in case the function "Reference backup" is enabled by
P0120;
- The fault code that occurred (shifts the last nine previous faults);
- The value of the motor overload function integrator;
- The value 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 HMI
Through the "Reset" soft key;
Automatically by setting P0340 (auto-reset);
Through a digital input: DIx = 20 (P0263 to P0270).
When an alarm situation (AXXX) is detected:
The keypad displays the alarm code and description;
The "STATUS" LED changes to yellow;
The PWM pulses are not blocked (the inverter remains operating).
key (manual reset);
Troubleshooting and Maintenance
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