Alpha Technologies ECM - Manual (Page 30)

30
TM 744-862-C0-003 Rev.C
Engine Control Module (ECM)
3.4 ECM Transponder Interface
The ECM also provides a transponder interface for remote status
monitoring as shown in figure 2-1, item 9. The transponder interface consists
of a 12-position terminal block with 8 optically-isolated output signals and one
switch closure input signal. The wiring diagram for the transponder interface
is shown in Figure 3-2, with the following signals mapped to the transponder
interface terminal block as shown in below.
Notes:
1. Major Alarms:
Low Oil Pressure
Engine over-temperature
Engine Overspeed
Overcrank
Output Over-voltage
Low Fuel
Water Intrusion
Pad Shear
Gas Hazard
2. Minor Alarms
ECM Control Fail
Alternator OFF (at the time
it should be ON)
Self-test failed
Low Ignition Battery
ECM Run/Auto/Stop switch
not in AUTO position
Tamper
DC bus voltage out of range
Engine disabled by software
Engine Service Required
3. Engine Alarms:
Low oil pressure
Engine over-temperature
Engine Overspeed
Overcrank
Engine disabled by software
4. Enclosure Alarms:
Water Intrusion
Pad Shear
PIN INPUT / OUTPUT DESCRIPTION ACTIVE STATE
1
2
3
4
5
6
7
8
9
10
11
12
Output
Output
Output
Output
Output
Output
Output
Output
Input
Ground
M ajor Alarm (note 1)
M inor Alarm (note 1)
Engine Alarm (note 3)
Gas Hazard
Test Fail
Enclosure Alarm (note 4)
Engine Status
(Running, Stopped)
Tam per
Output Common
Engine Run
Engine Run Return
To Be Determined
Open with respect to Pin 9
Open with respect to Pin 9
Open with respect to Pin 9
Open with respect to Pin 9
Open with respect to Pin 9
Open with respect to Pin 9
Closed to Pin 9
Closed to Pin 9
Connect to Pin 11
Table 3-1 ECM Transponder interface