Northern Lights OGSC300 Operator's Manual - page 11
OGSC300 08/12
5
2-3 TERMINAL DESCRIPTION
Term #
Description
1
Fuel Output provides 40A maximum. Fuel Output closes to +12/24VDC when start signal is received,
and opens when either an engine failure occurs or when Cool Down period has ended.
2, 3
Main +Battery power connection to controller. These terminals are internally connected together on
GSC300 controller.
4
Crank Output provides 40A maximum. Crank Output closes to +12/24VDC during cranking, and opens
when the engine has started, or during Crank Rest.
5, 6
Main Battery Ground connection for the controller module. A good ground connection, directly from
the battery, is required for proper operation. These terminals are internally connected together on
GSC300 controller.
7, 8
Preheat/ETS Output provides a set of dry contacts between terminals #7 and #8. When this output is
energized terminals #7 and #8 are connected together. When output is OFF terminals #7 and #8 have
no connection.
9, 10
Speed Signal Input for Crank Disconnect, Engine Run, and Overspeed sensing. 300VAC max input
voltage. Speed sensing input terminals (T#9, 10) do not have polarity sensitivity therefore the AC gen-
erator output leads can be connected in any polarity confi guration. Do not exceed 300VAC on speed
sensing input terminals.
11
Overcrank Annunciation Output closes to +12/24VDC on Overcrank Failure. 300mA max.
12
Overspeed Annunciation Output closes to +12/24VDC on Overspeed Failure. 300mA max.
13
High Temp Output closes to +12/24VDC upon High Temp Failure. 300mA max.
14
Low Oil Output closes to +12/24VDC upon Low Oil Failure. 300mA max.
15
Low Battery Output closes to +12/24VDC on Low Battery Condition. 300mA max.
16
Engine Run Output closes to +12/24VDC on Engine Run Condition. 300mA max.
17
Not In Auto Output closes to +12/24VDC when unit is not in auto. 300mA max.
18
General Failure Output closes to +12/24VDC on a General Failure. 300mA max.
19
Start Stop Input. Apply +12/24VDC to this terminal while unit is in Auto Mode to start engine. Remove
+12/24VDC to stop engine or enter Cool-Down mode.
20
Low Oil Pressure sensor input. This sensor can be the resistive type (Sender) or can be the switch
type. The proper type of sensor must be selected during GSC300 controller programming. The sender
or switch must be connected to ground for proper operation. If +Battery is connected to input terminal
this can result in damaged to GSC300 controller. When using a sender, the proper sender manufac-
turer must be selected as each sender manufacturer’s characteristics are different; the sender failure
set-point must also be selected. When using a switch NO or NC much be selected from the program-
ming menu. NO refers to the state of the contacts during normal engine operation, therefore NO refers
to normally open at normal engine run and close to ground on low oil pressure failure.
21
High Engine Temperature sensor input. This sensor can be the resistive type (Sender) or can be the
switch type. The proper type of sensor must be selected during GSC300 controller programming. The
sender or switch must be connected to ground for proper operation. If +Battery is connected to input
terminal this can result in damaged to GSC300 controller. When using a sender, the proper sender
manufacturer must be selected as each sender manufacturer’s characteristics are different; the sender
failure set-point must also be selected. When using a switch the switch must be the NO type on normal
engine run and close to ground on failure.
22
Fuel Level sensor or Auxiliary failure input. This sensor can be the resistive type (Sender) or can be
the switch type. The proper type of sensor must be selected during GSC300 controller programming.
The sender or switch must be connected to ground for proper operation. If +Battery is connected to in-
put terminal this can result in damaged to GSC300 controller. When using a sender, the proper sender
manufacturer must be selected as each sender manufacturer’s characteristics are different. When us-
ing a switch the switch must be the NO type on normal engine run and close to ground on failure.
Table 2 Terminal Description