ELECTRICAL
Ignition Shutoff Circuit Schematic—Gen-Set
See Figures 4-10 and 4-11.
T1
Ignition
Coil
SW3
Engine
On
On/Off
Off
Switch
4
SW2
Key
Switch
Red/Wht
B
Blk
E
Splice B
Red
Red
Blk
R3
5-Ohm
Resistor
Red/Wht
R2
Bail
Potentiometer
Blk/Grn
1
Grn
2
Red/Grn
3
4-20
J22
Brn
Blk
E1
Spark
Plug
J24
Blk
Blk
Start
Run
Off
D
Red
Red
A
Wht/Red
Wht/Red
Blk
F
Blk
Blk
Splice G
GC1
Red
Blk
SW1
Mow
Switch
Off
On
3
2
Yel
Yel
Red/Wht
Red/Grn
Grn
Blk/Grn
Red/Blu
Grn/Blu
Blk/Blu
Shld
Blk/Blu
1
R1
Throttle
Grn/Blu
2
Potentiometer
Red/Blu
3
Red
Blk
U3
U
1kW
Generator
G
+48V Traction Motor
+48V Reel Motor
+48V Input
J2-25
Key-Ignition
J2-24
Key-Start
J2-26
Traction Motor Tach
MCU Gnd
Traction Motor Temp
J2-33
Resistor Gnd
Traction Motor Speed
Traction Motor Dir
J2-34
Traction Motor Enable
Resistor +Ref
Traction Motor Gnd
J2-35
Resistor -Ref
U5
Main
Control
Unit
(MCU)
J2-14
Mow Enable Input
Reel Motor Tach
Reel Motor Temp
J2-13
+15V Output
Reel Motor Speed
J2-31
Bail Pot +5V
Reel Motor Dir
J2-32
Reel Motor Enable
Bail Pot Wiper
J2-30
Reel Motor Gnd
Bail Pot –
J2-15
Throttle Pot +5V
J2-16
Throttle Pot Wiper
J2-29
Throttle Pot –
J2-27
CAN High
Throttle Pot Shield
CAN Low
CAN Shield
Figure 4-10
F2
Splice D
30A
Red/Yel
Red
Red/Yel
J23
Blk
J23
Red/Blu
Red/Wht
Splice A
J1-2
Red
J1-1
Red
J1-3
Red/Blu
J2-6
Brn
J2-11
Red
J2-5
Grn
J2-20
Blu
J2-19
Wht
J2-4
Blk
Splice C
J2-17
Brn
J2-12
Red
J2-21
Grn
J2-9
Blu
J2-8
Wht
J2-10
Blk
Splice E
J2-1
Red
J2-2
Blk
J2-3
Shld
Ignition Shutoff Circuit
Ground Circuit
4262930-Rev A
Red
Blk
Red
Red
Brn
Red
Grn
Blu
Wht
Blk
Yel
Brn
Red
Grn
Blu
Wht
Blk
Yel
Red
Blk
Shld
TN4423
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