InverterFR-A800Verified · sol.ls-electric.com
FR-A800 E.OC2 — Overcurrent trip during constant speed
Trip — immediate stop
CAUSE
Why does it occur?
When the inverter output current reaches or exceeds approximately 235%*2 of the rated current during constant- speed operation, the protection circuit is activated and the inverter output is shut off. • Check for sudden load change. • Check for a short-circuit in the output circuit. • Check if the s
REMEDY · Step by step
How to fix it?
- • Keep the load stable. • Check the wiring to make sure that output short circuit does not occur. • Lower the stall prevention operation level
- Activate the fast-response current limit operation. (Refer to page 448.) • Check RS-485 terminal connection (under Vector control). • Prevent the motor from
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
Open official manual ↗