ABB 5091 fault code meaning
ABB / 5091
Series: ACH531, ACQ531, ACQ580
Safety torque off
drive
Meaning: Indicates activation of the run/stop safe torque off function, i.e., loss of the safety current signal connected to connector STO at start or during operation.
Possible causes
Source: ACH531 Firmware Manual P137; ACQ531 Firmware Manual P119; ACQ580 Pump Control Program Firmware Manual P195
Series: ACH580, ACS530
Safety torque off
drive
Meaning: Indicates that the run/stop Safe Torque Off function is active, meaning that the safety current signal connected to connector STO has been lost at start or during operation.
Possible causes
Source: ACH580 HVAC Control Program Firmware Manual P286; ACS530 Firmware Manual P272
Series: ACS180
Safety torque off
drive
Meaning: STO indicates that the run/stop Safe Torque Off function is active, meaning that the safety circuit signal connected to connector STO was lost at start or during operation.
Possible causes
Source: ACS180 Machine Control Program Firmware Manual P321
Series: ACS280
Safety torque off
drive
Meaning: STO indicates that the run/stop Safe Torque Off function is activated, meaning that the safety circuit signal connected to connector STO was lost at start or during operation.
Possible causes
Source: ACS280 Firmware Manual P343
Series: ACS380
Safety torque off
drive
Meaning: Indicates that the run/stop Safe Torque Off function is active, meaning that the safety circuit signal connected to connector STO was lost at start or during operation.
Possible causes
Source: ACS380 Machinery Control Program Firmware Manual P441
Series: ACS580
Safety torque off
drive
Meaning: Run/stop Safe torque off function active, indicating that the safety circuit signal connected to connector STO is lost at start or during operation.
Possible causes
Source: ACS580 Standard Control Program Firmware Manual P539
Series: ACS860
Drive interlock
drive
Meaning: The lock indication means that the drive run/stop interlock function is active, for example due to loss of the safety circuit signal connected to connector XDIL.
Possible causes
Source: ACS860 Basic Control Program Firmware Manual P310
Series: ACS880
Safety torque off
drive
Meaning: Indicates activation of the run/stop safe torque off function, for example due to loss of the safety circuit signal connected to connector XSTO.
Possible causes
Source: ACS880 Basic Control Program Firmware Manual P470
Series: ACS880-M04
Safety torque off
drive
Meaning: 31.22STO indicates that Safe torque off is active during run/stop, for example due to loss of the safety circuit signal connected to connector XSTO.
Possible causes
Source: ACS880-M04 Machinery Control Program Firmware Manual P434
Series: ACS880-MARINE
Safety torque off
drive
Meaning: Indicates that the Safe torque off function is active during run/stop, for example due to loss of the safety circuit signal connected to connector XSTO.
Possible causes
Source: ACS880 Light Marine P326
Series: ACS880-POS
Safety torque off
drive
Meaning: Indicates that the run/stop Safe Torque Off function is active, meaning that the safety current signal connected to connector XSTO was lost at start or during operation.
Possible causes
Source: ACS880 Position Control Program P459
Series: ACS880-WINCH
Safety torque off
drive
Meaning: Indicates run/stop: The Safe Torque Off function is active, meaning that the safety circuit signal connected to connector XSTO was lost at start or during operation.
Possible causes
Source: ACS880 Winch Control Program P565
Series: DCS880
Safe torque off
DC drive
Meaning: torqueoff.Programmable. (safe torque off).
Possible causes
Source: DCS880 Firmware Manual_3ADW000474R P380