Danfoss vlt FC 102 - Page 232

24-03 Fire Mode Min Reference
This parameter denes the minimum speed reference for the re
mode to operate from, although the motor speed limits in
parameter 4-10 Motor Speed Direction has the highest priority and
limits are set. The value match the motor unit selection in
parameter 0-02 Motor Speed Unit.
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.
24-04 Fire Mode Max Reference
This parameter denes the maximum speed reference which the
re mode can operate to, although the motor limits in
parameter 4-10 Motor Speed Direction has the highest priority.
This maximum value is also used as reference value for the 8
preset values calculations in %.
Range: Function:
Size
related*
[ par. 24-03 -
999999.999
FireModeUnit]
Maximum speed at which re mode
operates. The value is used as %
calculations of the preset values.
Maximum 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 parameter 0-02 Motor
Speed Unit. For closed loop, select
the unit in parameter 24-02 Fire
Mode Unit.
24-05 Fire Mode Preset Reference
A parameter array with 8 elements (0-7). The 8 present values
(zones) are for open-loop control. Index [0] is used for basic re
mode control. Indexes 1-7 are used to enhance re mode
control, which also overwrites the basic control. Additional
reference value can be added via parameter group 24-**.
Range: Function:
0 %* [-100 -
100 %]
24-06 Fire Mode Reference Source
Option: Function:
Select the external reference input
to be used for re mode. In open-
loop mode, this signal value is
added to the preset values in
parameter 24-05 Fire Mode Preset
Reference. There may be a dierent
units scaling between preset and
external values.
[0] * No function
[1] Analog Input
53
[2] Analog Input
54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital
pot.meter
[21] Analog input
X30/11
[22] Analog input
X30/12
[23] Analog Input
X42/1
[24] Analog Input
X42/3
[25] Analog Input
X42/5
[37] Analog Input
X49/1
[38] Analog Input
X49/3
[39] Analog Input
X49/5
[133] Fieldbus REF 1 A reference value can also come via
selected eldbus.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
230 Danfoss A/S © 10/2019 All rights reserved. M0010001
33