Troubleshooting And Maintenance; Faults And Alarms; Solution For The Most Frequent Problems - WEG CFW100 Manual Del Usuario

Troubleshooting and Maintenance

6 TROUBLESHOOTING AND MAINTENANCE

6.1 FAULTS AND ALARMS

NOTE!
Refer to the CFW100 quick reference and the programming manual for further
information on each fault or alarm.

6.2 SOLUTION FOR THE MOST FREQUENT PROBLEMS

Problem Point to be Verified
Motor will not start Incorrect wiring
Incorrect settings
Fault
Motor stall
Motor speed Loose connections
oscillates
Too high or too low Incorrect settings
motor speed (reference limits)
Motor nameplate
Display is off Keypad connections
Power supply voltage
Mains supply fuses open
34 | CFW100
Table 6.1: Solution for the most frequent problems
1. Check all power and control connections.
1. Check if the parameter values are correct for the application.
1. Check whether the inverter is disabled due to a fault
condition.
1. Decrease the motor overload.
2. Increase P136, P137 (V/f).
1. Stop the inverter, turn off the power supply, check and tighten
all the power connections.
2. Check all the internal connections of the inverter.
1. Check whether the values of P133 (minimum speed) and
P134 (maximum speed) are properly set for the used motor
and application.
1. Check whether the used motor matches the application.
1. Check the inverter keypad connection.
1. Rated values must be within the limits specified below:
200-240 V power supply: - Minimum: 170 V
1. Replace the fuses.
Corrective Action
Maximum: 264 V.