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A0511 Motor overtemperature alarm in siemens micromaster 420 or MM420 drive

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How can resolve problem A0511 Motor over temperature alarm in siemens micromaster 420 or MM420 drive ?

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Posts: 5095
Admin
Topic starter
(@click2electro)
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Joined: 2 years ago

Cause : Motor over temperature I2T.

- motor is overloaded.
- load duty cycle is exceeded.

Diagnosis & Remedy

Please check the following:
- value P0611 (motor I2t time constant) suitable?
- is P0614 (motor I2t overload alarm) set to a suitable value

1. P0611 (motor i2t time constant) should be set to appropriate value
2. P0614 (Motor i 2 t overload warning level) should be set to suitable level
3. Are long periods of operation at low speed occuring
4. Check that boost settings are not too high

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