Manual

4. Interconnection

031-132-B0-001 Rev. A

4.3.9 ECM-PWR GRI Enclosure Sensor Interface Ribbon Cable

The connector is a 14 pin 0.100 spaced, 150V rated ribbon cable with

polarized cable connectors that prevent incorrect connections in the field.

Designations for the connector mounted on the PCBA shall be identified by silk

screen J1 and marked with the #1 pin of the PCB receptacle for polarization.

See Fig. 4-9 for location.

Pin Description

1 Low Oil Pressure*

2 Over-Temp*

3 Over-Speed*

4 Over-Crank*

5 Engine Run*

6 Over Voltage Shutdown*

7 Alternator Output Active (ON)* (Developed by Charger Circuit)

8 Switch Not In Auto* (Auto-Off-Manual switch control switch)

9 Low Ignition Battery*

10 Logic Common - all alarms listed above

11 Control RTY* (Relay Transfer Switch low = Generator AC power) (Referenced

to pin 13)

12 Start* and Engine Run Enable* (See below) (Also remote test from external

test routine)

13 Start/Stop Power Common

14 Stop* (To Stop APU after test is complete)

Note: Active low determined by (*) symbol.

Note: The Pin #12 serves two functions:

-Collocated operation with ACU, START* command causes the engine

to latch on and continue to run when START* is released.

-Remote operation with ECM, ENGINE RUN ENABLE* (Pin 12)

command enables the engine to run as long as the signal is held

active LOW, and shuts down when the ENGINE RUN ENABLE* is

released.

(1*,1(

4.3 Connectors, continued

Fig.4-10 ECM-PWR GRI Enclosure Sensor Interface Ribbon Cable