Siemens 6RA70 DC Drive
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Jun 13, 2022 8:49 am
How can resolve problem A021 alarm in siemens 6RA70 DC Drive ?
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Jun 13, 2022 8:49 am
Cause : External alarm 1 (active in all operating states)
Bit 28 in control word 2 was in the log. "0" state for longer than the time set in P360 index 003.
