Siemens 6RA70 DC Drive
2
Posts
1
Users
0
Reactions
631
Views
Jun 13, 2022 9:01 am
How can resolve problem A031 alarm in siemens 6RA70 DC Drive ?
1 Reply
Jun 13, 2022 9:01 am
Cause : Speed controller monitoring (active in operating states of – –, I, II)
The monitor responds when the difference between the connectors selected in P590 and P591 (factory setting: Setpoint/actual value difference of speed controller) exceeds the limit set in parameter P388 for longer than the time set in parameter P390.
Possible causes
♦ Control loop interrupted
♦ Controller is not optimized
♦ P590 or P591 is not correctly parameterized
