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 adjustable frequency drive 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 adjustable
frequency drive via the LCP using the [Off] and [Hand] keys. Alarms can be reset via the [RESET]
key. After pressing [Hand on] key, the adjustable frequency drive 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 adjustable
frequency drive goes into Auto mode and follows
the Remote reference. In this mode, it is possible
to control the adjustable frequency drive via the
digital inputs and various serial interfaces (RS-485,
USB, or an optional serial communication bus). 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).
(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.
Introduction to FC 300
In par. 3-13 Reference Site it is possible to
choose to always select either Local (Hand)
[2] or Remote (Auto) [1] reference regardless
of whether the adjustable frequency drive is
in Auto mode or in Hand 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.33.B3.22 - VLT is a registered Danfoss trademark
130BP046.10
Active Reference
Local
Local
Remote
Remote
Local
Remote
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