ABB ACS850 Firmware Manual page 144

144 Parameters
No. Name/Value
30.02 Speed ref safe
-30000 ... 30000
rpm
30.03 Local ctrl loss
No
Fault
Spd ref Safe
Last speed
30.04 Mot phase loss
No
Fault
30.05 Earth fault
No
Warning
Fault
30.06 Suppl phs loss
No
Fault
30.07 Sto diagnostic
Fault
Description
Defines the safe speed reference that is used with the
Safe setting of supervision parameters
30.03 Local ctrl loss or 50.02 Comm loss func
This speed is used when the parameter is set to
Safe speed reference.
Selects how the drive reacts to a control panel or PC tool
communication break.
No action taken.
Drive trips on fault LOCAL CTRL LOSS.
The drive generates alarm LOCAL CTRL LOSS and sets the
speed to the speed defined by parameter
safe.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
The drive generates alarm LOCAL CTRL LOSS and freezes
the speed to the level the drive was operating at. The speed
is determined by the average speed over the previous 10
seconds.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
Selects how the drive reacts when a motor phase loss is
detected.
No action taken.
The drive trips on fault MOTOR PHASE.
Selects how the drive reacts when an earth fault or current
unbalance is detected in the motor or the motor cable.
No action taken.
The drive generates alarm EARTH FAULT.
The drive trips on fault EARTH FAULT.
Selects how the drive reacts when a supply phase loss is
detected.
No action taken.
The drive trips on fault SUPPLY PHASE.
Selects how the drive reacts when the drive detects that the
Safe Torque Off function is active while the drive is stopped.
The Safe Torque Off function disables the control voltage of
the power semiconductors of the drive output stage, thus
preventing the inverter from generating the voltage required
to rotate the motor. For the wiring of the Safe Torque Off
circuit, see the appropriate hardware manual.
Notes:
• This parameter is for supervision only. The Safe Torque Off
function can activate even when this parameter is set to
No.
• Fault STO 1 LOST / STO 2 LOST is activated if safety
circuit signal 1/2 is lost when the drive is in stopped state
and this parameter is set to
The drive trips on fault SAFE TORQUE OFF.
Spd ref
13.32 AI superv
upon an alarm.
Spd ref
30.02 Speed ref
Alarm or No.
FbEq
func,
Safe.
1 = 1 rpm
0
1
2
3
0
1
0
1
2
0
1
1