Alpha Technologies USM2.5 Status Monitoring Module - Manual (Page 19)

1. Installation
19 018-041-C0-003 Rev. C
1.4 Generator Connection
The Generator Connector provides the Transponder with alarms and status signals. Control
signals can also be sent to the generator for test and Run / Stop. Refer to the ECM operation
and maintenance manual for further information on the generator connections.
PIN # Generator connection
1 APU Fail / Major Alarm
2 APU Minor Alarm
3 Engine Alarm
4 Gas Hazard Alarm
5 APU Test Fail Alarm
6 APU Enclosure Alarm
7 Engine Status
8 APU Enclosure Tamper
9 APU Signal Return / ground
10 APU Run / Test Command
11 Run / Test Command Return
12 No Connection
Figure 1-10 Generator monitor connections
Alpha P/N 874-975-20
Output 1 LRI
Battery
Input
Temp
Probe
Battery
Breaker
To Generator
Compartment
1 5 9
2 6 10
3 7 11
4 8 12
Wire Entry
View
6 12
5 11
4 10
3 9
2 8
1 7
Wire Entry
View