information and status word is updated as the emergency mode operation is logged in the emer-
gency mode log.
Parameter 24-01 Emergency Mode Configuration
Table 1038: Parameter 24-01 Emergency Mode Configuration
24-01 Emergency Mode Configuration
Default value: [0] Open loop
Change during operation: True
N O T I C E
Before adjusting the PID controller, set parameter 24-09 Emergency Mode Alarm Handling to [9] Trip, all alarms/test.
N O T I C E
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 Configuration.
The emergency mode can be controlled in open loop with up to 8 different preset values (zones), or in closed loop by a reference
and feedback signal. The reference and feedback signal can come via drive input signals or over the fieldbus.
When emergency mode is active, the motor runs with a fixed speed based on a reference set. The unit is
the same as selected in parameter 0-02 Motor Speed Unit.
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 param-
eter 24-02 Emergency Mode Unit. For PID controller settings, use parameter group 20-** FC Closed Loop as
for normal operation. The same PID configuration can be selected for both normal and emergency mode,
and the operation can be continued as setup 1–4.
Parameter 24-02 Emergency Mode Unit
Table 1039: Parameter 24-02 Emergency Mode Unit
24-02 Emergency Mode Unit
Default value: Size related
Change during operation: True
By default, emergency mode is configured for open-loop control where only the motor unit is selected in parameter 0-02 Motor
Speed Unit. For closed-loop operation, select any of the following options.
AU275636650261en-000101 / 130R0334564 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
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