Danfoss VLT AHF 005 Programming Guide

20-20 Feedback Function
Option: Function:
NOTICE
Set any unused feedbacks to [0] No
Function in
•
Parameter 20-00 Feedback 1
Source.
•
Parameter 20-03 Feedback 2
Source.
•
Parameter 20-06 Feedback 3
Source.
The sum of setpoint 1 and any other
references that are enabled (see parameter
group 3-1* References) are used as the PID
controller’s setpoint reference.
[3]
*
Minimum Sets up the PID controller to compare feedback
1, feedback 2, and feedback 3. The PID controller
uses the lowest value as the feedback.
NOTICE
Set any unused feedbacks to [0] No
Function in
•
Parameter 20-00 Feedback 1
Source
•
Parameter 20-03 Feedback 2
Source
•
Parameter 20-06 Feedback 3
Source
Only setpoint 1 is used. The sum of
setpoint 1 and any other references that
are enabled (see parameter group 3-1*
References) are used as the PID controller’s
setpoint reference.
[4] Maximum Sets up the PID controller to compare feedback
1, feedback 2 and feedback 3 and use the
highest value as the feedback.
NOTICE
Set any unused feedbacks to [0] No
Function in
•
Parameter 20-00 Feedback 1
Source.
•
Parameter 20-03 Feedback 2
Source.
•
Parameter 20-06 Feedback 3
Source.
Only setpoint 1 is used. The sum of setpoint 1
and any other references that are enabled (see
20-20 Feedback Function
Option: Function:
parameter group 3-1* References) are used as the
PID controller’s setpoint reference.
[5] Multi
Setpoint
Min
Sets up the PID controller to calculate the
dierence between feedback 1 and setpoint 1,
feedback 2 and setpoint 2, and feedback 3 and
setpoint 3. It uses the feedback/setpoint pair in
which the feedback is the farthest below its
corresponding setpoint reference. If all feedback
signals are above their corresponding setpoints,
the PID controller uses the feedback/setpoint pair
with the least dierence between the 2.
NOTICE
If only 2 feedback signals are used, set the
non-used feedback to [0] No Function in
•
Parameter 20-00 Feedback 1
Source.
•
Parameter 20-03 Feedback 2
Source.
•
Parameter 20-06 Feedback 3
Source.
Note that each setpoint reference is the
sum of its respective parameter value
(parameter 20-21 Setpoint 1,
parameter 20-22 Setpoint 2 and
parameter 20-23 Setpoint 3) and any other
references that are enabled (see parameter
group 3-1* References).
[6] Multi
Setpoint
Max
Sets up the PID controller to calculate the
dierence between feedback 1 and setpoint 1,
feedback 2 and setpoint 2, and feedback 3 and
setpoint 3. It uses the feedback/setpoint pair in
which the feedback is farthest above its
corresponding setpoint reference. If all feedback
signals are below their corresponding setpoints,
the PID controller uses the feedback/setpoint pair
with the least dierence between the 2.
Parameter Descriptions Programming Guide
MG11CE02 Danfoss A/S © 03/2015 All rights reserved. 143
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Danfoss VLT AHF 005 Specifications

General

Brand	Danfoss
Model	VLT AHF 005
Category	DC Drives
Language	English