- General Electric Computer Accessories User Manual

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• Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Sequencer Commands
A sequencer request is generated from various user inputs to direct the sequencer to
run or flux the drive. A sequencer command is the internal “go ahead” to sequencer
once the permissive logic has been satisfied (see Sequencer Permissives).
The variables Run request and Jog request are associated with Run Commands. They
direct the sequencer to run the drive using the appropriate speed reference.
The variable Full flux request is associated with Flux Commands and directs the
sequencer to flux the drive. If the drive is already fluxed when a run is requested, the
drive will begin running immediately without the delay caused by fluxing the drive.
Related diagrams
• General Sequencing #2 (GenSeq_2)
• General Sequencing #3 (GenSeq_3)
Run Commands
A run command (initiated either by a Run request or Jog request) will:
• Enable bridge power
• Flux the drive (if it is not already fluxed)
• Enable drive torque
• Enable the speed regulator
• Enable the appropriate speed reference
Function inputs
Parameter Description
Run
request
select
Selects the variable that drives Run request. This input is only
active in “Remote mode” (Local mode active is False). The
sequencer normally treats the signal as a +/- edge-triggered input to
set Run request. However, if Stop PB select is used, the sequencer
looks only at the + edge of the signal to set Run request. (See
Stopping Commands and Modes for more information on Stop PB
select.)
Jog request
select
Selects the variable that drives Jog request. This input is only
active in “Remote mode.” It is treated as a +/- edge-triggered input.
Variable Description
Run
request, lan
Drives Run request from the LAN if LAN commands OK is True.
(Also see LAN Signal Map.) This input is only active in “Remote
mode”. The sequencer normally treats the signal as a +/- edge-
triggered input to set Run request. However, if Stop PB select, lan
is used, the sequencer looks only at the + edge of the signal to set
Run request. (See Stopping Commands and Modes for more
information on Stop PB select, lan.)
Jog
request, lan
Drives Jog request from the LAN if LAN commands OK is True.
This input is only active in “Remote mode”. It is treated as a +/-
edge-triggered input. (Also see LAN Signal Map.)
DDI Run
pushbutton
Sets Run request to True if the drive is in Local mode (Local mode
active is True).
DDI Jog
pushbutton
Sets Jog request when pressed and clears it when released. Is
operational only when the drive is in Local mode (Local mode active
is True).