ABB ACSM1 Drive
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Dec 22, 2021 7:18 am
How can resolve problem F0021 STO1 LOST Fault in ABB ACSM1 Drive ?
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Dec 22, 2021 7:19 am
Cause : Safe Torque Off function is active, i.e. safety circuit signal 1 connected between X6:1 and X6:3 is lost while drive is at stopped state and parameter 46.07 STO DIAGNOSTIC setting is (2) Alarm or (3) No
Check safety circuit connections.
