209Service Manual – SC5000 40 - Recovery System
Vacuum Motor Control Circuit Overview
Power to the vacuum motor is controlled by the power module, which is commanded by the main controller.
When the machine is enabled for operation, the power module activates the K2 power relay, that provides
positive battery power to the vacuum motor, and other devices. To activate the vacuum motor, the power
module uses PWM control to complete the battery circuit through the motor to ground.
The power module monitors the performance and health of the vacuum motor, and reports this information
back to the main controller via the CAN Bus. The power module will detect open circuits, short circuits, and
motor overloads.
J6-14
J6-13
A2
POWER MODULE
M4
M5
(OPTIONAL)
M6
GRN/GRY
GRN/RED
RED/GRN
GRN/GRY
RED/GRN
GRN/GRY
F8
FUSE, 30A.
1 2
B-
B-
-BV
+BV
M5
MOTOR, VACUUM 2
1
2
F9
FUSE, 7.5A.
1 2
-BV
+BV
F7
FUSE, 30A.
1 2
M
M6
SQUEEGEE
ACTUATOR
-
+
M4
MOTOR, VACUUM 1
1
2
KSI
B+
B-
J3-2
J3-9
RED
BLK
RED
BRN
YEL
BATTERY +
BATTERY -
K2
POWER MODULE CONTACTOR
3 4
1
2
B-
KSI
M
M