What does the OCA fault mean on the ATV21 or ATV212 drives?
Altivar 212, ATV212, S-Flex
All models, all serial numbers.
Overcurrent during start-up or ground fault
Try a voltage balance test. With the motor leads still disconnected, set parameter F605 to 0 (disable Output Phase Failure). Run the drive at 20Hz, 40Hz and 60Hz. At each speed measure the line to line output voltages to see if they are balanced.
Check that Line and Load cables are connected to the proper terminals. Line cables go to R/L1, S/L2 and T/L3. Load or motor cables go to U/T1, V/T2 and W/T3.
Disconnect the motor leads from the drive. Using a 1000V Megger, check the motor and motor leads for shorts or ground fault.