Local (Hand On) And Remote (Auto On) Control - Danfoss FC 300 Design Manual

FC 300 Design Guide
Local (Hand On) and Remote (Auto On) Con-
trol
The frequency converter can be operated manually via the local control panel ( LCP ) or remotely via
analog and digital inputs and serial bus.
If allowed in par. 0-40, 0-41, 0-42, and 0-43, it is possible to start and stop the frequency converter via
the LCP using the [Hand ON] and [Off] keys. Alarms can be reset via the [RESET] key. After pressing the
[Hand On] key, the frequency converter goes into Hand mode and follows (as default) the Local reference
that can be set using arrow key on the LCP.
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
(RS-485, USB, or an optional fieldbus). See more
about starting, stopping, changing ramps and pa-
rameter set-ups etc. in par. group 5-1* (digital
inputs) or par. group 8-5* (serial communica-
tion).
Active Reference and Configuration Mode
The active reference can be either the local reference or the remote reference.
In par. 3-13 Reference Site the local reference can be permanently selected by selecting Local [2].
To permanently select the remote reference select Remote [1]. By selecting Linked to Hand/Auto [0]
(default) the reference site will depend on which mode is active. (Hand Mode or Auto Mode).
Hand On
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.
Introduction to FC 300
various serial interfaces
Reference Site
Par. 3-13
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Local
Remote
MG.33.B7.02 - VLT is a registered Danfoss trademark
130BP046.10
Active Reference
Local
Local
Remote
Remote
Local
Remote
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