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random problem on micromaster 440

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aleb2

aleb2

Industrial
Joined
Jul 12, 2005
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4
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?
 
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