InverterFR-E800Verification pending — cross-check with the official manual
FR-E800 RB — RB
Alarm — operational, inspection needed
CAUSE
Why does it occur?
- Appears if the actual regenerative brake duty reaches or exceeds 85% of the reference regenerative brake duty (100%) determined by the settings of Pr.30 Regenerative function selection and Pr.70 Special regenerative brake duty
- If the regenerative brake duty reaches 100%, a regenerative overvoltage (E.OV[]) occurs. • Check if the brake resistor duty is not too high. • Check that the Pr.30 Regenera
REMEDY · Step by step
How to fix it?
- • Set the deceleration time longer. • Check the Pr.30 and Pr.70 settings
- Reference manual FR-E800 Instruction Manual (Function)
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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