Electrical System
55
Service Manual – SC1500
Wiring Diagrams
Wiring (Ladder) Diagram
Drawing 56104446, Rev C
Note:
Machine models with a Serial Number below 3510143206293 are functionally the same, but have the
keyswitch connection upstream from the optional battery charger, instead of downstream as shown.
A1 (CONTROL BOARD)
MAIN MACHINE CONTROLLER
PIN 6 - BRAKE -
PIN 9 - STATUS
PIN 16 - REV. ALARM
PIN 18 - SPEED LIMIT
PIN 13 - POT. LOW
PIN 4 - GO SWITCH
PIN 3 - HIGH
P
IN
14
-
B
R
AKE
+
P
IN
5
-
KS
I
B
+
B-
M1
M2
E1
CURTIS 1210 SPEED
CONTROLLER
J3-1 B+
J3-8 B+
J3-14 KEY SWITCH
J3-13 BRUSH
CONTACTOR
J3-11 SOLUTION
SOLENOID
J3-10 HORN +
J3-9 HORN -
J1-1 + DETERGENT
PUMP
DEAD MAN
SWITCH J3-4
J1-3 - DETERGENT
PUMP
MOTION J3-6
STATUS J3-7
B- J2-8
B- J2-7
B- J2-1
B- J2-2
OPT IONAL
PIN 17 - DRIVE SWITCH
PIN 12 - INHIBIT
INHIBIT SPC J1-7
REV. ALARM J3-5
1 2 3
WHEN CHARGER IS NOT INSTALLED
THERE NEEDS TO BE A JUMPER BETWEEN
PINS 1 AND 2 ON CONNECTOR X126
ON MAIN HARNESS
DRIVE SWITCH J3-3
CHARGER OPTIONAL
SEE PAGE 2
A B
1 2 3
X001
X003
X004
X002
X006
TRACKCLEAN CONNECTIONS
X001=B+(RED)
X002=B-(BLU)
X003=SCRUB(WHT)
X004=KEY SW(BRN)
X005=VACUUM(GRA)
X006=DRIVE(PNK)
X007=BYPASS(BRN)
X008=MACHINE SUPPLY(ORN)
BRN/VIO
KEY SW
BRN
BRN-MACHINE
ORN
TRACKCLEAN
HARNESS
KEY SWITCH DETAIL
X004
X008
TRACKCLEAN BYPASS:
CONNECT BROWN WIRE FROM THE MACHINE TO BROWN WIRE (X007).
USE ADAPTER HARNESS FOR RETROFIT MACHINES.
C
C
C
2
C
C
C
C
BLK
BRN/ORN
BLU
RED
RED
RED
BRN/VIO
WHT/RED
VIO/BLK
ORN/RED
GRN/BLK
RED/YEL
BLK
BLK
BLK
BLU/GRY
YEL/BLK
BLK
BLU/BLK
ORN/BLU
RED/YEL
ORN
RED/GRN
BLK
BRN/BLK
RED/BRN
YEL/ORN
YEL
/O
R
N
R
E
D
BRN/WHT
RED/WHT
R
E
D
/W
H
T
YEL
GRN/ORG
GRA
YE
L
VIO
BLK
BRN
BRN/VIO
BLK
RED
B
R
N
BRN
BLU
WHT/BRN
BLK
YEL/BLK
RED/GRN
ORN
RED/WHT
B-
B+
X162C
X158A
S1
SW, SPST KEY
1
2
X158B
X143A
S5
GO SWITCH
2
1
R1
100K POT
1
2
3
F1
FUSE, 150A.
1
2
D1
X161B
M
M2
DETERGENT PUMP
+
-
X161A
X161C
X143B
M
M1
M
O
T
O
R
,
W
H
EE
L
DR
IV
E
2
1
X144A
X162B
Y1
BRAKE
1
2
BT1
BATTERY, 24 Vdc
+
-
L1
VALVE, SOLENOID
1
2
X161D
X144B
X157B
S4
EMERGENCY STOP
1
2
K2
CONTACTOR, BRUSH
X161E
CB1
CIRCUIT BREAKER, 50A.
1
2
X162E
X162D
X157A
CB2
CIRCUIT BREAKER, 5 AMP
1
2
S2
DEADMAN SWITCH
2
1
X162A
H1
HORN
-
+
