Danfoss VLT 6000 HVAC Series User Manual

1 setpoint and 1 feedback
If only 1 setpoint and 1 feedback signal are used, pa-
rameter 418 Setpoint 1 will be added to the remote
reference. The sum of the remote reference and Set-
point 1 becomes the resulting reference, which will
then be compared with the feedback signal.
1 setpoint and 2 feedbacks
Just like in the above situation, the remote reference
is added to Setpoint 1 in parameter 418. Depending
on the feedback function selected in parameter 417
Feedback function, a calculation will be made of the
feedback signal with which the sum of the references
and the setpoint is to be compared. A description of
the individual feedback functions is given in parameter
417 Feedback function.
2 Setpoints and 2 feedbacks
Used in 2-zone regulation, where the function selected
in parameter 417 Feedback function calculates the set-
point to be added to the remote reference.
416 Feedback conversion
(FEEDBACK CONV.)
Value:
Linear (LINEAR) [0]
Square root (SQUARE ROOT) [1]
Function:
In this parameter, a function is selected which converts
a connected feedback signal from the process to a
feedback value that equals the square root of the con-
nected signal.
This is used, e.g. where regulation of a flow (volume)
is required on the basis of pressure as feedback signal
(flow = constant x •pressure). This conversion makes
it possible to set the reference in such a way that there
is a linear connection between the reference and the
flow required. See drawing in next column.
Feedback conversion should not be used if 2-zone
regulation in parameter 417 Feedback function has
been selected.
Description of choice:
If Linear [0] is selected, the feedback signal and the
feedback value will be proportional.
If Square root [1] is selected, the frequency converter
translates the feedback signal to a square root value.
VLT
®
6000 HVAC Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.61.B5.02 - VLT
®
is a registered Danfoss trademark 149
Programming

Danfoss VLT 6000 HVAC Series Specifications

General

Brand	Danfoss
Model	VLT 6000 HVAC Series
Category	DC Drives
Language	English