GE Industrial Solutions Galaxy Vector Rack Mounted Controller J85501M-1 - Manual (Page 23)

Galaxy Rack-Mounted Vector Controller J85501M-1
Issue 2 January 2008 Product Description 2 - 9
connections are available on both the alarm board and the BUJ
board.
Vsense: Typically connected to the battery bus. Vsense+ is
connected to the positive dc potential, and Vsense- to the
negative. The GCM recognizes plant voltage sense inputs on the
BUJ board. Polarity of sense inputs must be observed. Incorrect
polarity will display incorrect plant voltage. Vsense leads should
be fused with a 1A or smaller fuse at the source. These signals
are available on both the alarm board and the BUJ board.
CG: (Controller Ground) determines the controller ground
reference. The controller ground reference is connected
according to the location of the plant shunts being monitored. If
the shunts are located in the battery side of the DC bus, then
(CG) should be connected to the battery side of the DC bus. If
the shunts are located in the Discharge Ground (DG) side of the
dc bus, then CG must be connected to the Discharge Ground
(DG) side of the DC bus. Note: All shunts installed must be in
the same side of the DC bus. Either side of the shunt can be used
as the reference, but best practice is to connect the reference to
the more negative side of the shunt. For shunts in the hot side,
this lead should be protected with a 1A to 4A fuse.
Alarm Inputs Basic office and contactor state alarm inputs. These inputs are
closures to BAT or provided ABS input with the exception of the
PBT signal that requires a closure to CG. All connections can be
made with the provided 1U-ALM terminal block termination
board 848711933.
Table 2-E: BUJ Alarm Input Terminals
Name Description
Alarm
Board
BUJ1 Alarm Asserted
AMJ Auxiliary major alarm input TB4.2 J16.1 Closure to Batt
FAJ Fuse major alarm input TB4.6 P5.8/J17.1 Closure to Batt
LVD1O Low voltage disconnect contactor 1 open status input TB3.4 J13.2 Closure to Batt
LVD2O Low voltage disconnect contactor 2 open status input TB3.9 J14.2 Closure to Batt
MAINT Maintenance (open connector) TB4.10 - Open to Batt