Technical information

3.18 Main Menu - FC Closed Loop - Group 20
This parameter group is used for configuring the closed loop PID Controller, that controls the output frequency of the
frequency converter.
3.18.1 20-0* Feedback
This parameter group is used to configure the feedback signal for the frequency converter’s closed loop PID Controller.
Whether the frequency converter is in Closed Loop Mode or Open Loop Mode, the feedback signals can also be shown on
the frequency converter’s display, be used to control a frequency converter analog output, and be transmitted over various
serial communication protocols.
Setpoint 1
P 20-21
Setpoint 2
P 20-22
Setpoint 3
P 20-23
Feedback 1 Source
P 20-00
Feedback 2 Source
P 20-03
Feedback 3 Source
P 20-06
Feedback conv.
P 20-01
Feedback conv.
P 20-04
Feedback conv.
P 20-07
Feedback 1
Feedback 2
Feedback 3
Feedback
Feedback Function
P 20-20
Multi setpoint min.
Multi setpoint max.
Feedback 1 only
Feedback 2 only
Feedback 3 only
Sum (1+2+3)
Dierence (1-2)
Average (1+2+3)
Minimum (1|2|3)
Maximum (1|2|3)
Setpoint to
Reference
Handling
0%
0%
0%
0%
130BA354.12
20-00 Feedback 1 Source
Option: Function:
Up to three different feedback
signals can be used to provide the
feedback signal for the frequency
converter’s PID Controller.
This parameter defines which input
will be used as the source of the
first feedback signal.
Analog input X30/11 and Analog
input X30/12 refer to inputs on the
optional General Purpose I/O board.
[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
20-00 Feedback 1 Source
Option: Function:
[10] Analog Input X42/3
[11] Analog Input X42/5
[15] Analog Input X48/2
[100] Bus feedback 1
[101] Bus feedback 2
[102] Bus feedback 3
[104] Sensorless Flow Requires set up by MCT 10 Set-up
Software with sensorless specific
plug in.
[105] Sensorless Pressure Requires set up by MCT 10 Set-up
Software with sensorless specific
plug in.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG11CD02 - VLT
®
is a registered Danfoss trademark 129
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