Siemens 6RA70 DC Drive
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Jun 13, 2022 8:39 am
How can resolve problem F081 fault in siemens 6RA70 DC Drive ?
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Jun 13, 2022 8:41 am
Cause : CB/TB heartbeat error CB/TB has not incremented the monitoring counter for a period
of 800 ms
Possible causes of fault
♦ CB/TB board is defective
• CB/TB board is not correctly installed
i015 Code number of board:
1. TB or 1st CB
2. 2 nd CB
