Forum

Share:
Notifications
Clear all

A0504 Inverter overtemperature alarm in siemens micromaster 420 or MM420 drive

2 Posts
1 Users
0 Likes
184 Views
Posts: 8753
Admin
Topic starter
(@click2electro)
Member
Joined: 3 years ago

A0504 Inverter overtemperature alarm in siemens micromaster 420 or MM420 drive comes when the inverter heatsink temperature (P0614) was exceeded.

1 Reply
Posts: 8753
Admin
Topic starter
(@click2electro)
Member
Joined: 3 years ago

Cause : Inverter over temperature - when the inverter heatsink temperature (P0614) was exceeded. This results in a reduction of the pulse frequency and/or the output frequency dependent on the parameterization in (P061).

1. Check if ambient temperature is within specified limits

2. Check load conditions and duty cycle

3. Check if fan is turning when drive is running

Please check the following:

1. The ambient temperature within the permissible limits.

2. The load and load duty cycle within the permissible limits.

Reply
Share: