Danfoss VLT HVAC Drive FC 100 Series Design Manual page 29

®
VLT HVAC Drive Design Guide
After pressing the [Auto On] key, the frequency converter goes into Auto
mode and follows (as default) the Remote reference. In this mode, it is
possible to control the frequency converter via the digital inputs and var-
ious serial interfaces (RS-485, USB, or an optional fieldbus). See more
about starting, stopping, changing ramps and parameter set-ups etc. in
par. group 5-1* (digital inputs) or par. group 8-5* (serial communica-
tion).
Hand Off
Auto
LCP Keys
Hand
Hand -> Off
Auto
Auto -> Off
All keys
All keys
The table shows under which conditions either the Local reference or the Remote reference is active. One of them is always active, but both can not be
active at the same time.
NB!
Local Ref. will be restored at power-down.
Par. 1-00 Configuration Mode determines what kind of application control principle (i.e. Open Loop or Closed loop) is used when the Remote reference
is active (see table above for the conditions).
Reference Handling - Local Reference
Active Reference and Configuration Mode
The active reference can be either the local reference or the remote ref-
erence.
In par. 3-13
lected by selecting
To permanently select the remote reference select
Linked to Hand/Auto
lecting
on which mode is active. (Hand Mode or Auto Mode).
Reference Site
Par. 3-13
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Local
Remote
MG.11.B7.02 - VLT ® is a registered Danfoss trademark
2. Introduction to VLT HVAC Drive
Reference Site
the local reference can be permanently se-
Local [2].
[0] (default) the reference site will depend
Active Reference
Local
Local
Remote
Remote
Local
Remote
2
130BP046.10
Remote [1]. By se-
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