Danfoss VLT HVAC Drive FC 131 Programming Manual page 154

VLT® HVAC Drive FC 131
Programming Guide
[172]
[173]
[174]
4.15.2 20-2* Feedback/Setpoint
Parameter group for feedback function and setpoints. Select which setpoint and feedback to use. The setpoint and feedback can be
a fixed pair or selected separately based on logic comparisons.
20-20 Feedback Function
Default value: [3] Minimum
Conversion index: -
Select how the feedback should be calculated. The feedback can be either a single feedback source or a combination of several
feedbacks.
Table 360: Option:
[0]
[1]
[2]
[3]
[4]
20-21 Setpoint 1
Default value: 0 ProcessCtrlUnit
Conversion index: -3
Setpoint 1 is used in closed loop as the reference to compare the feedback values with. The setpoint can be offset with digital,
analog, or bus references.
Table 361: Range:
Min: -4999.000
4.15.3 20-6* Sensorless
Parameters for sensorless. See also parameter 16-26 Power Filtered [kW], parameter 16-27 Power Filtered [hp], parameter 18-50 Sensor-
less Readout [unit], and parameter 20-00 Feedback 1 Source.
20-60 Sensorless Unit
Default value: [20] l/s
Conversion index: -
Select the unit to be used with parameter 18-50 Sensorless Readout [unit].
Table 362: Option:
[0]
[20]
[23]
[24]
154 | Danfoss A/S © 2022.05
Parameter type: Option
Data type: u_int8
Sum
Difference
Average
Minimum
Maximum
Parameter type: Range
Data type: int32
Max: 4999.000 ProcessCtrlUnit
Parameter type: Option
Data type: u_int8
in WG
ft WG
in Hg
2-setup: All setups
Change during operation: True
Default value: 0 ProcessCtrlUnit
2-setup: All setups
Change during operation: True
None
l/s
3
m /s
3
m /min
2-setup: All setups
Change during operation: True
AU370727746889en-000101 / 130R0994
Parameters