ABB ACQ580 Firmware Manual page 184

180 Parameters
No. Name/Value
31.20 Earth fault
No action
Warning
Fault
31.21 Supply phase loss
No action
Fault
31.22 STO indication
run/stop
Fault/Fault
Fault/Warning
Description
Selects how the drive reacts when an earth (ground) fault or
current unbalance is detected in the motor or the motor cable.
No action taken.
The drive generates an
The drive trips on fault 2330 Earth
Selects how the drive reacts when a supply phase loss is
detected.
No action taken.
The drive trips on fault 3130 Input phase
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 chapter The Safe
torque off function in the Hardware manual of the drive.
Inputs
Indication (running or stopped)
IN1 IN2
0 0
Faults
0 1
Faults
1 0
1 1
Inputs
IN1 IN2 Running
Fault 5091 Safe torque
0 0
Faults
0 1 torque off
Safe torque off 1
Faults
1 0 torque off
Safe torque off 2
1 1
A2B3 Earth leakage warning.
leakage.
loss.
Fault 5091 Safe torque off
5091 Safe torque off
FA81 Safe torque off 1
5091 Safe torque off
FA82 Safe torque off 2
(Normal operation)
Indication
Stopped
Warning
off torque off
5091 Safe Warning
and FA81 torque off
FA81 Safe torque off 1
5091 Safe Warning
and FA82 torque off
FA82 Safe torque off 2
(Normal operation)
Def/FbEq16
Fault
0
1
2
Fault
0
1
Fault/Fault
0
and
and
1
A5A0 Safe
A5A0 Safe
and fault
A5A0 Safe
and fault