Alpha Technologies APU Control Module (ACM) - Manual (Page 14)

018-340-B0-001 Rev. A 14
3.0 Indicators, Controls and Connectors
APU Control Module LED Indicators and switches:
1. “Major” Alarm Indicator (Red LED)
2. “Minor” Alarm Indicator (Red LED)
3. “Notify” Indicator (Amber LED)
4. “Comm” Indicator (Green LED)
5. “System” Indicator (Green LED)
6. “Run-Auto-Stop” Switch
7. “Service/Reset” Push Button Switch
8. Analog Alarms Output
9. Communications Interface
10. Alarm: Input Signals
11. Remote: DCIU Breaker Trip
12. Battery DC Bus Input
13. APU AC/DC Power and Control Signals
The ACM user interface consists of 5 LEDs (1-5), a three-position rocker switch (6), and
a momentary contact, push-button switch (7). The Communications Interface (9) can
be used to attach an Alpha Technologies system controller. Provisions are made for
Transponder connections through the Analog Alarms Output (8). The interface with the
DOCSIS transponder platform is with an offset data cable from one of the parallel connected
communications ports (9).
Fig. 3-1, ACM Front Panel
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