What are the remedies of O.CF fault on Altivar 312 drive.
The O.CF fault comes on starting and during running and it comes mostly during running.
Sometimes if we reduce CLI it works but it depends on the application need. CLI reduce can solve the O.CF but be careful, with a too low CLI, speed is not following and application will not work. So, implement it accordingly.
Increase the switching frequency and Try to optimize it.
Enter correct motor parameter and enter correct ‘Cos phi’ which is available on Motor Name plate and do auto tuning in cold state.