ABB A7B0 fault code meaning
ABB / A7B0
Series: ACH531, ACQ531, ACS530
Motor speed feedback
drive
Meaning: Motor speed feedback not received.
Possible causes
Source: ACH531 Firmware Manual P130; ACQ531 Firmware Manual P112; ACS530 Firmware Manual P264
Series: ACS380
Motor speed feedback
drive
Meaning: 90.45 Motor feedback fault. Motor speed feedback has failed, and the drive continues to run in open-loop control mode.
Possible causes
Source: ACS380 Machinery Control Program Firmware Manual P431
Series: ACS860
Motor speed feedback
drive
Meaning: Feedback fault. No motor speed feedback signal received.
Possible causes
Source: ACS860 Basic Control Program Firmware Manual P303
Series: ACS880
Motor speed feedback
drive
Meaning: No motor speed feedback signal has been received.
Possible causes
Source: ACS880 Basic Control Program Firmware Manual P460
Series: ACS880-M04
Motor speed feedback
drive
Meaning: Motor feedback fault. No motor speed feedback received.
Possible causes
Source: ACS880-M04 Machinery Control Program Firmware Manual P422
Series: ACS880-POS
Motor speed feedback
drive
Meaning: Feedback fault: No motor speed feedback received.
Possible causes
Source: ACS880 Position Control Program P448
Series: ACS880-WINCH
Motor speed feedback
drive
Meaning: ... fault. No motor speed feedback received.
Possible causes
Source: ACS880 Winch Control Program P555