Danfoss VLT AQUA FC 200 Series Programming Manual page 165

®
VLT AQUA Drive Programming Guide
20-21 Setpoint 1
Range:
0.000 Proc- [-999999.999 - 999999.999 Proc-
essCtrlU- essCtrlUnit]
nit*
20-22 Setpoint 2
Range:
0.000 Proc- [-999999.999 - 999999.999 Proc-
essCtrlU- essCtrlUnit]
nit*
Minimum
[3] sets up the PID Controller to compare Feedback 1, Feedback 2 and Feedback 3 and
use the lowest value as the feedback.
NB!
Any unused feedbacks must be set to
Only setpoint 1 will be used. 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 setpoint
reference.
Maximum
[4] sets up the PID Controller to compare Feedback 1, Feedback 2 and Feedback 3 and
use the highest value as the feedback.
NB!
Any unused feedbacks must be set to
Only Setpoint 1 will be used. 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 setpoint reference.
Multi-setpoint minimum
[5] sets up the PID Controller to calculate the difference between Feedback
1 and Setpoint 1, Feedback 2 and Setpoint 2, and Feedback 3 and Setpoint 3. It will use the feed-
back/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 will use the feed-
back/setpoint pair in which the difference between the feedback and setpoint is the least.
NB!
If only two feedback signals are used, the feedback that is not to be used must
No Function
be set to
reference will be the sum of its respective parameter value ( 20-12 and 20-13)
and any other references that are enabled (see par. group 3-1*).
Multi-setpoint maximum [6] sets up the PID Controller to calculate the difference between Feedback
1 and Setpoint 1, Feedback 2 and Setpoint 2, and Feedback 3 and Setpoint 3. It will use the feed-
back/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 will use the feed-
back/setpoint pair in which the difference between the feedback and the setpoint reference is the
least.
NB!
If only two feedback signals are used, the feedback that is not to be used must
be set to No Function
reference will be the sum of its respective parameter value (20-21, 20-22 and
20-23) and any other references that are enabled (see par. group 3-1*).
Function:
Setpoint 1 is used in Closed Loop Mode to enter a setpoint reference that is used by the frequency
converter's PID Controller. See the description of par. 20-20
NB!
Setpoint reference entered here is added to any other references that are enabled
(see par. group 3-1*).
Function:
Setpoint 2 is used in Closed Loop Mode to enter a setpoint reference that may be used by the
frequency converter's PID Controller. See the description of
Function .
®
MG.20.O4.02 - VLT is a registered Danfoss trademark
2 Parameter Description
No Function
in par. 20-00, 20-03, or 20-06.
No Function
in par. 20-00, 20-03, or 20-06.
in par. 20-00, 20-03 or 20-06. Note that each setpoint
in par. 20-00, 20-03 or 20-06. Note that each setpoint
Feedback Function
Feedback Function
, par. 20-20
2
.
Feedback
165