Siemens Micromaster 420 or MM420 Drive
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Jun 09, 2022 4:42 am
F0002 fault in siemens micromaster 420 or MM420 drive - comes when DC link voltage (r0026) higher than the overvoltage threshold or high input supply.
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Jun 09, 2022 4:44 am
Cause - comes when DC link voltage (r0026) higher than the overvoltage threshold or high input supply.
1. DC link voltage (r0026) higher than the overvoltage threshold (refer to parameter r0026)
2. ground fault
Diagnosis & Remedy please check the following:
1. is the line supply voltage within the permissible range?
2. has the DC current DC link monitoring been enabled (P1240) and correctly parameterized?
3. extend the deceleration ramp (ramp-down time P1121, P1135)
4. remove the ground fault
5. is the required braking power within the permissible limits?
