Danfoss VLT HVAC Drive FC 102 - Page 188

24-01 Fire Mode Conguration
Option: Function:
NOTICE
Before adjusting the PID controller set
parameter 24-09 Fire Mode Alarm Handling,
[2] Trip, All Alarms/Test.
NOTICE
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 Conguration.
[0]
*
Open
Loop
When re 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 re 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
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 Fire Mode Unit
Option: Function:
Select the desired unit when re mode is active
and running in closed loop.
[0] None
[1] %
[2] RPM
[3] Hz
[4] Nm
[5] PPM
[10] 1/min
[11] RPM
[12] Pulse/s
[20] l/s
[21] l/min
[22] l/h
[23] m³/s
[24] m³/min
[25] m³/h
[30] kg/s
[31] kg/min
[32] kg/h
[33] t/min
[34] t/h
24-02 Fire Mode Unit
Option: Function:
[40] m/s
[41] m/min
[45] m
[60] °C
[70] mbar
[71] bar
[72] Pa
[73] kPa
[74] m WG
[75] mm Hg
[80] kW
[120] GPM
[121] gal/s
[122] gal/min
[123] gal/h
[124] CFM
[125] ft³/s
[126] ft³/min
[127] ft³/h
[130] lb/s
[131] lb/min
[132] lb/h
[140] ft/s
[141] ft/min
[145] ft
[160] °F
[170] psi
[171] lb/in²
[172] in WG
[173] ft WG
[174] in Hg
[180] HP
24-03 Fire Mode Min Reference
Range: Function:
Size
related*
[ -999999.999
- par. 24-04
FireModeUnit]
Minimum value for the reference/
setpoint (limiting the sum of value in
parameter 24-05 Fire Mode Preset
Reference and value of signal on
input selected in parameter 24-06 Fire
Mode Reference Source).
If running in open loop when re
mode is active, the unit is selected by
the setting of parameter 0-02 Motor
Speed Unit. For closed loop, select the
unit in parameter 24-02 Fire Mode
Unit.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
186 Danfoss A/S © 03/2015 All rights reserved. MG11CE02
33