Pressure Warnings - Danfoss VLT FC 102 Programming Manual

Programming Guide | VLT® HVAC Drive FC 102

31-5* Pressure Warnings

6.28.5
31-50 Above Level Threshold W2
Default value: Size related
Setup: All setups
Data type:
Int16
This is an array parameter with 4 elements, 1 for each sensor. Enter the lowest threshold level to trigger pressure sensor status
notifications. Align the threshold selection with W1 in parameter 31-22 Above Level Threshold. To disable the function, select the highest
value.
31-51 Pressure Warning W2
Default value: 0
Setup: All setups
Data type: Uint8
This parameter shows the W2 value for all 4 sensors. The state is in 8-digit binary value where 1 indicates an active status (On), and 0
indicates an inactive status (Off ). Reading from right to left, the first 4 digits indicate the W2 warnings for the below-level threshold, and
the last 4 digits indicate the W1 warnings for the above-level threshold. For example, counting from right to left, sensor 1 for the below-
level threshold is at position 1, and sensor 1 for the above-level threshold at position 5. The status information includes digital outputs or
fieldbus as for the SLC control function. The information can include all sensors or individual sensor selection via the SLC function.
31-52 Filter Monitoring Preference
Default value: [0] Speed
Setup:
All setups
Data type: Uint8
This is an array parameter with 4 elements, 1 for each sensor.
Use this parameter to select the preference for filter monitoring.
Option Name
[0]* Speed
[1] Air volume
31-53 Normal Air Flow
Default value:
0 AirPresToFlowUnit
Setup: All setups
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Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Description
Select [0] Speedfor the applications without the air volume
information.
[1] Air volumegives the most correct signal on the filter
monitoring, but this requires a pressure sensor on the ventilation
fan to calculate the air volume.
Parameter type:
Conversion index:
AU430028034214en-001901 / 130R0310 |
Parameter Descriptions
Range, -8000 - 8000 Pa, Array
[4]
0
True
Range, 0 - 255
0
True
Option, Array [4]
–
True
Range, -999999 - 999999
AirPresToFlowUnit
0
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