Danfoss VLT FC 102 Programming Manual page 539

Programming Guide | VLT® HVAC Drive FC 102
Option Name
[2] Enable-run reverse
[3] Enabled-coast
[4] Enable-run Fwd/Rev
[8] Alarm suppression
24-01 Fire Mode Configuration
Default value: [0] Open loop
Setup:
All setups
Data type: Uint8
Before adjusting the PID controller, set parameter 24-09 Fire Mode Alarm Handling to [9] Trip, all alarms/test.
If [2] Enable-run reverse is selected in parameter 24-00 Fire Mode Function, [3] Closed loop cannot be selected in parameter 24-01
Fire Mode Configuration.
The fire 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.
Option Name
[0]* Open loop
[3] Closed loop
24-02 Fire Mode Unit
Default value: –
© 2024.10
Description
In this mode, the motor continues to operate in a
counterclockwise direction. Works only in open loop. Set
parameter 24-01 Fire Mode Configuration to [0] Open Loop.
In this mode, the output is disabled, and the motor is allowed to
coast to stop.
In this mode, the drive continues operation as normal with
standard parameters and control operation, but where the
alarms are suppressed as in normal fire mode. The FM LCP
information and status word are updated as the fire mode
operation is logged in the fire mode log.
Parameter type:
Conversion index:
Change during operation:
NOTICE
NOTICE
Description
When fire 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 fire mode is active, the built-in PID controller controls the
speed based on the setpoint and a feedback signal selected in
parameter 24-07 Fire Mode Feedback Source. Select the unit in
parameter 24-02 Fire 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
fire mode, and the operation can be continued as setup 1–4.
Parameter type:
Parameter Descriptions
Option
–
True
Option
AU430028034214en-001901 / 130R0310 | 539