ABB A5A0 fault code meaning
ABB / A5A0
Series: ACH531, ACQ531, ACQ580
Safety torque off
drive
Meaning: The run/stop safe torque off function is active, indicating loss of the safety circuit signal connected to connector STO.
Possible causes
Source: ACH531 Firmware Manual P127; ACQ531 Firmware Manual P109; ACQ580 Pump Control Program Firmware Manual P182
Series: ACH580, ACS530
Safety torque off
drive
Meaning: Indicates that the run/stop safe torque off function is active, i.e., loss of the safety circuit signal connected to connector STO.
Possible causes
Source: ACH580 HVAC Control Program Firmware Manual P279; ACS530 Firmware Manual P261
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 has been lost.
Possible causes
Source: ACS180 Machinery Control Program Firmware Manual P315
Series: ACS280, ACS580
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 has been lost.
Possible causes
Source: ACS280 Firmware Manual P332; ACS580 Standard Control Program Firmware Manual P525
Series: ACS380
Safety torque off
drive
Meaning: Indicates that the run/stop Safe torque off function is activated, meaning that the safety circuit signal connected to connector STO is lost.
Possible causes
Source: ACS380 Machinery Control Program Firmware Manual P428
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 P300
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 Primary Control Program Firmware Manual P455
Series: ACS880-M04
Safety torque off
drive
Meaning: 31.22STO indicates that the run/stop Safe Torque Off function is active, for example due to loss of the safety circuit signal connected to connector XSTO.
Possible causes
Source: ACS880-M04 Machinery Control Program Firmware Manual P417
Series: ACS880-MARINE
Safety torque off
drive
Meaning: Indicates that the run/stop Safe Torque Off function is active, for example due to loss of the safety circuit signal connected to connector XSTO.
Possible causes
Source: ACS880 Light Marine P316
Series: ACS880-POS, ACS880-WINCH
Safety torque off
drive
Meaning: Indicates that the Safe Torque Off function is enabled during run/stop, meaning that the safety circuit signal connected to the XSTO interface is lost.
Possible causes
Source: ACS880 Position Control Program P443; ACS880 Winch Control Program P549