NOTICE
During emergency mode operation, all stop commands to the frequency converter are ignored, including coast/coast
inverse and external interlock. However, if Safe Torque O is available in the frequency converter, this function is still
active.
NOTICE
If using the live zero function in emergency mode, then it is also active for analog inputs other than that used for
emergency mode setpoint/feedback. Should the feedback to any of those other analog inputs be lost, for example a
cable is burned, live zero function operates. If this is not wanted, disable the live zero function for those other inputs.
Set the wanted live zero function if there is a missing signal when emergency mode is active in
parameter 6-02 Emergency Mode Live Zero Timeout Function.
Warning for live zero has a higher priority than the warning Emergency Mode.
NOTICE
If setting the command [11] Start Reversing on a digital input terminal in parameter 5-10 Terminal 18 Digital Input, the
frequency converter interprets this as a reversing command.
24-00 Emergency Mode Function
Option: Function:
NOTICE
In the above, alarms are produced or
ignored in accordance with the selection
in parameter 24-09 Emergency Mode
Alarm Handling.
[0]
*
Disabled Emergency mode function is not active.
[1] Enabled-
Run
Forward
In this mode, the motor continues to operate
in a clockwise direction. Works only in open
loop. Set parameter 24-01 Emergency Mode
Conguration to [0] Open Loop.
[2] Enabled-
Run
Reverse
In this mode, the motor continues to operate
in a counterclockwise direction. Works only in
open loop. Set parameter 24-01 Emergency
Mode Conguration to [0] Open Loop.
[3] Enabled-
Coast
In this mode, the output is disabled and the
motor is allowed to coast to stop.
[4] Enabled-
Run
Fwd/Rev
24-01 Emergency Mode Conguration
Option: Function:
NOTICE
Before adjusting the PID controller, set
parameter 24-09 Emergency Mode Alarm
Handling, [2] Trip, All Alarms/Test.
24-01 Emergency Mode Conguration
Option: Function:
NOTICE
If [2] Enable-Run Reverse is selected in
parameter 24-00 Emergency Mode Function,
[3] Closed Loop cannot be selected in
parameter 24-01 Emergency Mode Congu-
ration.
[0]
*
Open
Loop
When emergency mode is active, the motor runs
with a xed speed based on a reference set. The
unit is the same as selected in
parameter 0-02 Motor Speed Unit.
[3] Closed
Loop
When emergency mode is active, the built-in PID
controller controls the speed based on the setpoint
and a feedback signal selected in
parameter 24-07 Emergency Mode Feedback Source.
Select the unit in parameter 24-02 Emergency Mode
Unit. For other PID controller settings, use
parameter group 20-** FC Closed Loop as for normal
operation. If the motor also is controlled by the
built-in PID controller when in normal operation,
the same transmitter can be used for both cases by
selecting the same source.
24-02 Emergency Mode Unit
Option: Function:
Select the unit when emergency mode is active
and running in closed loop.
[0]
[1] %
[2] RPM
[3] Hz
[4] Nm
[5] PPM
[10] 1/min
Parameter Description Programming Guide
MG20OB02 Danfoss A/S © 05/2018 All rights reserved. 203
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