Programming Guide | VLT® HVAC Drive FC 102
21-43 Ext. 2 Differentiation Time
Default value:
0 s
Setup:
All setups
Data type:
Uint16
The differentiator does not react to a constant error. It only provides a gain when the feedback changes. The quicker the feedback
changes, the stronger the gain from the differentiator.
21-44 Ext. 2 Dif. Gain Limit
Default value:
5
Setup:
All setups
Data type:
Uint16
Set a limit for the differentiator gain (DG). The DG increases if there are fast changes. Limit the DG to obtain a pure differentiator gain
when changes are slow and a constant differentiator gain when quick changes occur.
21-46 Ext. 2 On Reference Bandwidth
Default value:
5%
Setup:
All setups
Data type:
Uint8
Enter the on-reference bandwidth. When the PID control error (the difference between the reference and the feedback) is less than the
value of this parameter, the on-reference status bit is high.
21-5* Ext. CL 3 Ref./Fb.
6.21.7
21-50 Ext. 3 Ref./Feedback Unit
Default value:
[1] %
Setup:
All setups
Data type:
Uint8
Select the unit for the reference and feedback.
Option
Name
[0]
None
[1]*
%
[5]
PPM
[10]
1/min
[11]
RPM
[12]
Pulse/s
[20]
l/s
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Parameter type:
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Description
AU430028034214en-001901 / 130R0310 |
Parameter Descriptions
Range, 0=Off - 10 s
-2
True
Range, 1 - 50
-1
True
Range, 0 - 200%
0
True
Option
–
True
483
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