Mitsubishi FR-F Series- FR-F800, FR-F800-E, FR-F846-E2 & FR-F700 Drive
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Mar 30, 2024 6:28 am
Cause : Communication fault (inverter) comes when the inverter trips when communication error occurs consecutively for the permissible number of retries or more when Pr.335 RS-485 communication retry count "9999" during RS-485 communication from the RS-485 terminals. The inverter also trips if communication is broken for the period of time set in Pr.336 RS-485 communication check time interval.
- Check the RS-485 terminal wiring.
- Perform wiring of the RS-485 terminals properly.
