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

FC 300 Design Guide

Local (Hand On) and Remote (Auto On) Control

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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 [Off] and [Hand] keys. Alarms can be reset via the [RESET]
key. After pressing [Hand On] key, the frequency converter goes into Hand mode and follows
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 the
Remote reference. In this mode, it is possible
to control the frequency converter via the digital
inputs and various 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 communication).
In par. 3-13 Reference Site can be chosen to always
select either Local (Hand) [2] or Remote (Auto)
[1] reference regardless of whether the frequency
converter is in Auto mode or in Hand mode.
(Hand On) and Remote (Auto On) Control
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.
Par. 1-00 Configuration Mode determines what kind of application control principle (i.e. Speed, Torque or
Process Control) is used when the Remote reference is active (see table above for the conditions).
Par. 1-05 Local Mode Configuration determines the kind of application control principle that
is used when the Local reference is made activate.
24
Introduction to FC 300
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.B4.02 - VLT is a registered Danfoss trademark
130BP046.10
Active Reference
Local
Local
Remote
Remote
Local
Remote