Parameters 20-** Fc Closed Loop - Danfoss VLT AQUA Drive FC 202 Programming Manual

Parameter Description

3.17 Parameters 20-** FC Closed Loop

This parameter group is used for configuring the closed
loop PID Controller, that controls the output frequency of
the frequency converter.
3.17.1 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
Setpoint 1
P 20-21
Setpoint 2
P 20-22
Setpoint 3
P 20-23
Feedback conv.
Feedback 1 Source
P 20-01
P 20-00
Feedback conv.
Feedback 2 Source
P 20-04
P 20-03
Feedback conv.
Feedback 3 Source
P 20-07
P 20-06
Illustration 3.51 Input Signals in Closed Loop PID Controller
20-00 Feedback 1 Source
Option: Function:
Up to 3 different feedback signals
can be used to provide the feedback
signal for the frequency converter's
PID Controller.
This parameter defines which input
is 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
MG20O702
Programming Guide
Loop Mode or Open Loop Mode, the feedback signals can
be shown on the frequency converter's display. It can also
be used to control a frequency converter analog output,
and be transmitted over various serial communication
protocols.
Multi setpoint min.
Multi setpoint max.
Feedback 1 Feedback 1 only
Feedback 2 only
Feedback 3 only
Sum (1+2+3)
Feedback 2
Di erence (1-2)
Average (1+2+3)
Minimum (1|2|3)
Maximum (1|2|3)
Feedback 3
20-00 Feedback 1 Source
Option:
[8]
[9]
[10]
[11]
[15]
[100] Bus Feedback 1
[101] Bus Feedback 2
[102] Bus feedback 3
[200] Ext. Closed Loop 1
[201] Ext. Closed Loop 2
[202] Ext. Closed Loop 3
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
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Feedback Function
P 20-20
Function:
Analog Input X30/12
Analog Input X42/1
Analog Input X42/3
Analog Input X42/5
Analog Input X48/2
3 3
Setpoint to
Reference
Handling
Feedback
133