10 ELECTRICAL SYSTEM
en-76
10.3 PDU AND CONTROLLER LOCATIONS ________________________________________
A.
Power Distribution Unit (PDU) Circuit Breakers
Used to protect electrical system. Three manual
reset circuit breakers located on the PDU are
accessible by opening the hood and looking towards
the left ROPS post. Push down on rubber boot to
reset circuit breaker.
B. Main Controller Unit (MCU) Diagnostic Lights
Twenty four lights are used to indicate active MCU
functions. Lift MCU access panel to access MCU.
C. Reel Controller Unit (RCU) Diagnostic Lights
Eighteen lights are used to indicate active RCU
functions. Remove access plug from right side of
steering column to view RCU diagnostic lights.
D. Over-Voltage Limit Module (OLM) Diagnostic
Lights (Early Units)
Six lights are used to indicate communication, power,
and energized resistors.
D. Braking Resistor Controller (BRC) (Later Units)
Remove right side operator platform cover to access
BRC.
E. Traction Controller Diagnostic Light
Single green light on traction controller indicates
power and faults. A steady light indicates the
controller is active. A flashing light indicates a
traction system fault/error has occurred. Remove
right side operator platform cover to access traction
controller.
F.
Steering Controller Diagnostic Light
Single green light on steering controller indicates
power and faults. A steady light indicates the
controller is active. A flashing light indicates a
steering system fault/error has occurred. Open the
hood and remove controller cover to access the
steering controller.
G. 3WD Controller Diagnosic Light
Single green light on 3WD controller indicates power
and faults. A steady light indicates the controller is
active. A flashing light indicates a 3WD system fault/
error has occurred. Open the hood and remove
controller cover to access the 3WD controller.
Figure 10A
4
8
V
1
2
V
!
SP
ARE 12V DGTL LO IN
GENSET ST
A
T
US
PR
OGRAM SELECT #4
INPUTS
PR
OGRAM SELECT #3
PR
OGRAM SELECT #2
PR
OGRAM SELECT #1
SP
ARE DIGIT
A
L IN #5
SP
ARE DIGIT
A
L IN #4
SP
ARE DIGIT
A
L IN #3
SP 48V DGTL IN #2
SP 48V DGTL IN #1
SEA
T SWITCH
MCU Controller Diagnostic Lights
OLM Controller
Diagnostic Lights
RCU Controller Diagnostic Lights
Traction Controller
Diagnostic Light
PDU Manual Reset
Circuit Breakers
12VDC
50A
Steering
30A
48VDC
12A
CAN RX
CAN TX
LEFT REEL
TYPE
LEFT REEL DIR
LEFT A
C
T LO
WER
LEFT A
C
T RAISE
RIGHT REEL MO
T
O
R
LEFT REEL MO
T
O
R
+48VDC INPUT
RIGHT REEL
TYPE
RIGHT REEL DIR
RIGHT A
C
T LO
WER
RIGHT A
C
T RAISE
CENTER REEL MO
T
O
R
CENTER A
C
T LO
WER
CENTER A
C
T RAISE
CENTER REEL
TYPE
CENTER REEL DIR
C
D
D
A
E
F
B
OUTPUTS
+48VDC PO
WER IN
+12VDC FUEL SOL PWR IN
+12VDC PO
WER IN
FUEL PULL SOLENOID
FUEL HOLD SOLENOID/
ANTI-FIRE SOLENOID
GLO
W
PLUG RELA
Y
ST
AR
T RELA
Y
TRA
C
TION CONTRA
CT
OR
HEAD LIGHT
TCU F
A
N OUTPUT
SP
ARE OUTPUT #2
SILENT MODE OUTPUT
RESIST
OR
2
4
1
3
PWR
C
OM
Braking Resistor
Controller
Steering Controller
Diagnostic Light
B+
B-
U
V
W
G
3WD Controller
Diagnostic Light
B+
B-
U
V
W
B+
+
B-
U
V
W
