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A0505 alarm in siemens micromaster 420 or MM420 drive

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A0505 alarm in siemens micromaster 420 or MM420 drive - comes when overload alarm limit P0294 is exceeded or the pulse frequency and/or the output frequency is reduced.

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Posts: 14733
Admin
Topic starter
(@click2electro)
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Joined: 3 years ago

Cause : Inverter I2T - when overload alarm limit P0294 is exceeded or the pulse frequency and/or the output frequency is reduced.

1. Overload alarm limit P0294 is exceeded (refer to utilization r0036)

2. The pulse frequency and/or the output frequency is reduced as a function of the setting of parameter P0290

3.Check whether the load duty cycle lies within the permissible limits.

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