Forum

Notifications
Clear all

A0910 alarm in siemens micromaster 420 or MM420 drive

2 Posts
1 Users
0 Likes
72 Views
Posts: 5095
Admin
Topic starter
(@click2electro)
Member
Joined: 2 years ago

How can resolve problem A0910 alarm in siemens micromaster 420 or MM420 drive ?

Topic Tags
1 Reply
Posts: 5095
Admin
Topic starter
(@click2electro)
Member
Joined: 2 years ago

Cause
- Vdc max controller was de-activated, as it was not able to keep the DC link voltage (r0026) within the
limit values (refer to r0026 and P1240).
This occurs,
- if the line supply voltage is permanently too high.
- if the motor is driven by an active load, which means that the motor goes into regenerative operation.
- while decelerating (short down-ramps P1121) for extremely high load torques
Diagnosis & Remedy
Please check the following:
- is the input voltage (P0756) within the permissible range ?
- are load duty cycle and load limits within the permissible limits

Reply
Share: