Alpha Technologies ECM - Manual (Page 4)

4
TM 744-862-C0-003 Rev.C
Engine Control Module (ECM)
Table of Contents
Section 1, System Overview
1.1 Introduction ............................................................................... 13
1.2 Theory of Operation .................................................................... 17
1.2.1. Normal Operating Condition .................................................. 17
1.2.2. Standby Operating Condition (less than 3 minutes) .................. 17
1.2.3. Standby Operating Condition (more than 3 minutes) ................ 17
1.2.4. Normal APU Shutdown ......................................................... 18
1.2.5. Abnormal APU Shutdown ...................................................... 18
1.2.6. ECM Operating Mode Summary ............................................... 19
Section 2, ECM Indicators and Control Functions
2.1 Indicators .................................................................................. 21
2.2 Control Functions ........................................................................ 23
Section 3, ECM Alarms and Notifications
3.1 Alarms Classifications ................................................................... 25
3.2 Notifications ............................................................................... 28
3.3 Alarm and Notification Indications .................................................. 29
3.4 Standard ECM-Transponder Interconnection .................................... 30
3.5 ECM Transponder Interface ........................................................... 32
3.6 Transponder System Block Diagram ................................................ 33
Section 4, ECM Configuration/System Interface
4.1 ECM Configuration DIP Switch, Fuses ............................................. 35
4.2 ECM Configuration ....................................................................... 36
4.3 System Interface ........................................................................ 37
4.4 ECM input voltage and line sense configurations ............................... 38
4.5 ECM System Parameters ............................................................... 39
4.5.1 Low DC Bus Level ................................................................. 39
4.5.2 High DC Bus Level ................................................................ 39
4.5.3 Service Interval ................................................................... 39
4.5.4 Service Countdown .............................................................. 39
4.5.5 Total Engine Runtime ............................................................ 39
4.5.6 Auto-test Interval ................................................................ 40
4.5.7 Auto-test Countdown ........................................................... 40
4.5.8 Auto-test Duration ............................................................... 40
4.5.9 Start Delay ......................................................................... 40
4.5.10 Shutdown Delay .................................................................. 40
Section 5, System Self-test and Maintenance
5.1 Self-Test ................................................................................... 41
5.2 System Maintenance ................................................................... 43