Wheel System - Traction
113
Service Manual – SC1500
Wheel Drive Motor Circuit Descriptions
Power to the E1 Curtis 1210 Speed Controller
In order for positive voltage from the
SPST Key Switch
to reach
Pin 5 - KSI
(key switch input) on the
E1 Curtis
1210 Speed Controller
:
• The contacts in the
Internal Relay in Battery Charger
must be closed (charger unplugged).
• The
Emergency Stop S4
switch and
Dead Man Switch S2
must be closed.
If all of these condition are not met, the machine will not drive.
Emergency
Stop
S4
S1
S2
Dead Man Switch
E1
Curtis 1210
Speed
Controller
B+
B+
B-
WHT/BRN
BLU
BRN
SPST Key
Switch
2
2
2
1
1
1
BLK
BLK
B-
Pin 5 - KSI
B+
Gnd
1 2 3
A
B
B+
B-
Internal Relay
in Battery Charger