ABB ACS880-104

306 Parameters
31.22 STO indication
run/stop
Selects which indications are given when one or both Safe
torque off (STO) signals are switched off or lost. The
indications also depend on whether the drive is running or
stopped when this occurs.
The tables at each selection below show the indications
generated with that particular setting.
Notes:
• This parameter does not affect the operation of the STO
function itself. The STO function will operate regardless of
the setting of this parameter: a running drive will stop upon
removal of one or both STO signals, and will not start until
both STO signals are restored and all faults reset.
• The loss of only one STO signal always generates a fault
as it is interpreted as a malfunction.
For more information on the STO, see the Hardware manual
of the drive.
Fault/Fault
Fault/Fault 0
Fault/Warning 1
No. Name/Value Description Def/FbEq16
Inputs
Indication (running or stopped)
IN1 IN2
00 Fault 5091 Safe torque off
01
Faults 5091 Safe torque off and FA81 Safe
torque off 1 loss
10
Faults 5091 Safe torque off and FA82 Safe
torque off 2 loss
1 1 (Normal operation)
Inputs Indication
IN1 IN2 Running Stopped
00
Fault 5091 Safe torque
off
Warning A5A0 Safe
torque off
01
Faults 5091 Safe
torque off and FA81
Safe torque off 1 loss
Warning A5A0 Safe
torque off and fault
FA81 Safe torque off 1
loss
10
Faults 5091 Safe
torque off and FA82
Safe torque off 2 loss
Warning A5A0 Safe
torque off and fault
FA82 Safe torque off 2
loss
1 1 (Normal operation)