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VLT® HVAC Drive FC 131
Programming Guide
20-03 Feedback 2 Source
Default value: [0] No function
Conversion index: -
The effective feedback signal is made up of up to 3 different input signals. Select which drive input should be treated as the source
nd
of the 2
of these signals. The other input signals are defined in parameter 20-00 Feedback 1 Source and parameter 20-06 Feedback 3
Source.
Table 355: Option:
[0]
[1]
[2]
[3]
[100]
[101]
20-04 Feedback 2 Conversion
Default value: [0] Linear
Conversion index: -
This parameter allows a conversion function to be applied to feedback 2.
Table 356: Option:
[0]
Linear
[0] Linear has no effect on the feedback.
[1]
Square root
[1] Square root is commonly used when a pressure sensor is used to provide flow feedback.
flow ∝ pressure
20-06 Feedback 3 Source
Default value: [0] No function
Conversion index: -
The effective feedback signal is made up of up to 3 different input signals. Select which drive input should be treated as the source
nd
of the 2
of these signals. The other input signals are defined in parameter 20-00 Feedback 1 Source and parameter 20-03 Feedback 2
Source.
Table 357: Option:
[0]
[1]
[2]
[3]
[100]
[101]
152 | Danfoss A/S © 2022.05
Parameter type: Option
Data type: u_int8
No function
Analog input 53
Analog input 54
Pulse input 29
Bus feedback 1
Bus feedback 2
Parameter type: Option
Data type: u_int8
Parameter type: Option
Data type: u_int8
No function
Analog input 53
Analog input 54
Pulse input 29
Bus feedback 1
Bus feedback 2
2-setup: All setups
Change during operation: True
2-setup: All setups
Change during operation: False
2-setup: All setups
Change during operation: True
AU370727746889en-000101 / 130R0994
Parameters
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