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What are the remedies of O.CF fault on Altivar 312 drive.

Published date: 24 November 2019

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.

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