Local (Hand) And Remote (Auto) Control - GE AF-650 GP Design Manual

3.2.7 Local (Hand) and Remote (Auto) Control

The frequency converter can be operated manually via the local control panel (Keypad) or remotely via analog and digital inputs and serial bus.
If allowed in par. K-40 [Hand] Button on Keypad, par. K-41 [Off] Button on Keypad, par. K-42 [Auto] Button on Keypad, and par. K-43 [Reset] Button on Keypad, it is
possible to start and stop the frequency converter via the Keypad using the [Hand] and [Off] keys. Alarms can be reset via the [RESET] key. After pressing the
[Hand] key, the frequency converter goes into Hand mode and follows (as default) the Local reference that can be set using arrow key on the Keypad.
After pressing the [Auto] 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 various serial in-
terfaces (RS-485, USB, or an optional network). See more about starting,
stopping, changing ramps and parameter set-ups etc. in par. group E-0#
(digital inputs) or par. group O-5# (serial communication).
Active Reference and Configuration Mode
The active reference can be either the local reference or the remote reference.
In par. F-02 Operation Method 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
Auto
Keypad 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. H-40 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. H-45 Local Mode Configuration determines the kind of application control principle that is used when the Local reference is made active.
Par. F-02 Operation Method
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Linked to Hand / Auto
Local
Remote
AF-650 GP Design Guide
Active Reference
Local
Local
Remote
Remote
Local
Remote
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