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random problem on micromaster 440

Thread starter aleb2
Start date Aug 30, 2005

Status: Not open for further replies.

Aug 30, 2005

aleb2

Industrial

I have a micromaster 440 and a s7-200 CPU with USS, when i change frequency set point from 50hz to 10hz, sometime (random)the motor runs like the drives is off (motor in stall), the drive (and s7-200) doesn't display any alarms;
Have you any advices for me?