10 ELECTRICAL SYSTEM
en-78
10.5 MCU CONTROLLER LIGHTS ________________________________________________
The MCU controller is a solid state device that monitors and
controls mower functions. The MCU communicates with the
other controllers via the CAN network.
Each input and output signal is displayed through lamps
located on top face of the controller. A closed input switch
indicates an active circuit and will turn an input lamp on, an
open switch an inactive circuit and will turn a lamp off.
Outputs are active when their lights are on.
Figure 10C
Controller Functions by Lamp Number
Lamp On - Circuit is active
Lamp Off - Circuit is inactive
INPUTS OUTPUTS
Lamp Circuit Lamp Circuit
1
+48 Volt DC Power In
4
Fuel Pull Solenoid
2
+12 Volt DC Fuel Solenoid Power In
5 Fuel Hold Solenoid/Anti-Fire Solenoid
3
+12 Volt DC Power In
6 Glow Plug Relay
13
Spare 12 Volt Digital Low In
7
Start Relay
14
Genset Status
8 Traction Contactor Output
15
Program Select #4
9 Head Light
16
Program Select #3
10 TCU Fan Output
17
Program Select #2 (Diesel)
11 Spare Output #2
18
Program Select #1 (Gas)
12 Silent Mode Output
19
Spare 48 Volt Digital In #5
20
Spare 48 Volt Digital In #4
21
Spare 48 Volt Digital In #3
22
Spare 48 Volt Digital In #2
23
Spare 48 Volt Digital In #1
24
Seat Switch
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