InverterFR-A800Verification pending — cross-check with the official manual
FR-A800 OL — Stall prevention (overcurrent)
Alarm — operational, inspection needed
CAUSE
Why does it occur?
- • When the output current of the inverter increases, the stall prevention (overcurrent) function is activated. • The following section explains about the stall prevention (overcurrent) function
- During acceleration When the output current (output torque under Real sensorless vector control or Vector
REMEDY · Step by step
How to fix it?
- • Gradually increase or decrease the Pr.0 setting by 1% at a time and check the motor status. (Refer to page 725.) • Set a larger value in Pr.7 and Pr.
- (Refer to page 373.) • Reduce the load. • Try Advanced magnetic flux vector control, Real sensorless vector control, or Vector control. • Change t
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.
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