3.18 Parameters: 20-** Main Menu - FC Closed Loop
This parameter group is used for conguring 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 congure 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)
Dierence (1-2)
Average (1+2+3)
Minimum (1|2|3)
Maximum (1|2|3)
Setpoint to
Reference
Handling
0%
0%
0%
0%
130BA354.12
Illustration 3.47 Feedback
20-00 Feedback 1 Source
Option: Function:
NOTICE
If a feedback is not used, set its
source to [0] No Function.
Parameter 20-20 Feedback Function
determines how the PID controller
uses the 3 possible feedbacks.
Up to 3 dierent feedback signals can be
used to provide the feedback signal for
the frequency converter’s PID controller.
This parameter denes which input is
used as the source of the rst feedback
signal.
20-00 Feedback 1 Source
Option: Function:
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
Parameter Descriptions Programming Guide
MG11CE02 Danfoss A/S © 03/2015 All rights reserved. 139
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