18
Table 3.2 Unit Wiring Description
Pin
Function
1
Negative battery input supplies EAOM-19.
2
Positive battery input supplies EAOM-19.
3
Battery positive input. Supplies Pin 4,5 and 6.
4
Output to Start relay. +DC supply from pin 3. Controls starter motor.
6
Output to horn. +DC supplies from pin 3. (Configurable)
12
Mains voltage neutral.
16
Generator voltage neutral.
18
Mains contactor.
(NC).
Relay output
19
Generator contactor.
(NO).
Relay output
5
Output to Fuel/Stop solenoid. +DC supply from pin 3. Controls fuel to engine or
controls engine stopping
8
Input from Temperature switch. Switched to 0V, when engine temperature exceeds
thermostat setting.
11
Input from charge generator. Can be used to detect when engine has started. Must be
connected to +BAT if not used.
17
Input from generator L1 phase. Unit can be programmed to use frequency of
alternator output to detect when engine has started.
7
Input from Oil Pressure switch. The oil pressure switch must be the type that opens
when oil pressure is normal, and closes on low oil pressure. (failure condition or
engine stopped.)
9
Configurable input-1. Normally open. When switched to 0V, sounds the horn and
flashes SPARE-1 LED on panel. Can be programmed to stop the engine, de-
energise the generator contactor
.
or the remote inhibit
10
Configurable input-2. Normally open. When switched to 0V, sounds the horn and
flashes SPARE-2 LED on panel. Can be programmed to stop the engine. de-
energise the generator contactor
.
or the remote inhibit
13
14
15
L1
L2
L3
Mains voltage inputs. Used to detect failure for controlling automatic transfer of
load to generator. Pins 14 and 15 not used on single phase applications.
3.5 Unit Wiring Description