20-04 Feedback 2 Conversion
Option: Function:
See par. 20-01
Feedback 1 Conversion
for details.
[0] * Linear
[1] Square root
[2] Pressure to temperature
[3] Pressure to flow
[4] Velocity to flow
20-06 Feedback 3 Source
Option: Function:
See par. 20-00
Feedback 1 Source
for details.
[0] * No function
[1] Analog input 53
[2] Analog input 54
[3] Pulse input 29
[4] Pulse input 33
[7] Analog input X30/11
[8] Analog input X30/12
[9] Analog Input X42/1
[10] Analog Input X42/3
[11] Analog Input X42/5
[100] Bus feedback 1
[101] Bus feedback 2
[102] Bus feedback 3
20-07 Feedback 3 Conversion
Option: Function:
See par. 20-01
Feedback 1 Conversion
for details.
[0] * Linear
[1] Square root
[2] Pressure to temperature
[3] Pressure to flow
[4] Velocity to flow
20-20 Feedback Function
Option: Function:
This parameter determines how the three possible feedbacks will be used to control the output
frequency of the frequency converter.
[0] Sum
Sum
[0] sets up the PID Controller to use the sum of Feedback 1, Feedback 2 and Feedback 3 as
the feedback.
NB!
Any unused feedbacks must be set to
No Function
in par. 20-00
Feedback 1
Source
, par. 20-03
Feedback 2 Source
, or par. 20-06
Feedback 3 Source
.
The sum of Setpoint 1 and any other references that are enabled (see par. group 3-1*) will be used
as the PID Controller’s set-point reference.
6 How to Programme the Low Harmonic Drive
VLT HVAC Low Harmonic Drive Operating In-
structions
112 MG.16.A1.02 - VLT
®
is a registered Danfoss trademark
6
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