Delta VFD150C43A-21

Chapter 14 Fault Codes and DescriptionsC2000 Plus
14-83
ID* Display on LCD Keypad Fault Name Fault Descriptions
87
O
verload protection at
low frequency (oL3)
Low frequency and high current protection
Action and Reset
Action condition Software detection
Action time Act immediately
Fault treatment parameter N/A
Reset method Manual reset
Reset condition Reset immediately
Record Yes
Cause Corrective Actions
Power module overload
1. Reduce the motor drive’s load.
2. Decrease the carrier frequency (Pr.00-17)
3. Decrease the ambient temperature of the drive’s operation
4. Decrease the current limit
5. Choose motor drives with lager power
6. Increases acceleration time
7. If the drive is in V/F mode, decrease the output voltage for low-
frequency
operation.