ELECTRICAL SYSTEM MLC650 SERVICE/MAINTENANCE MANUAL
3-2
Published 09-09-16, Control # 229-09
Crane Electrical Power Distribution
When the battery disconnect switch is closed and battery
power is available, turning the engine run switch S3 to the
RUN position provides power to terminal KL15 on the
following control modules:
The engine run switch also provides power directly to the
following components:
• Main (ODM) display
• RCL/RCI (RDM) display
• CraneStar TCU
When in the RUN position, the engine run switch provides
power from circuit breaker CB4 to relays K3—K6, closing the
normally open contacts of the relays and providing power to
the engine electrical control module (ECM) and the crane’s
CAN Bus control modules as follows:
• Relay K3 energizes relay K4, which provides power to
the engine ECM through the following circuit breakers:
- CB15 and CB16 (Tier 3)
- CB17, CB19, and CB20 (Tier 4)
• Relay K5 provides power from circuit breaker CB8 to
terminal +UE on the following control modules:
• When energized, relay K6 provides power to terminal
+UB on all crane CAN Bus control modules. K6 also
provides power to terminals KL15 and +UE on the
following control modules:
When energized, relay K6 also provides power to the
following components and circuits:
• Jog dial and joysticks (via CB46)
• Climate controls (via CB42)
• Wiper controls (via CB43)
• Work lights and panel lights (via CB44)
• 24 V
DC
-to-12 V
DC
converter (powers the radio and seat
motor switches) (via CB41)
• Variable position counterweight (VPC™) encoder (via
CB39)
• SCM-00 • IOLC31
• CCM-10 • IOLC32
• CCMC11 • IOLC33
• IOSA22 • IOLC34
• IOLC30
• SCM-00 • IOLC31
• CCM-10 • IOLC32
• CCMC11 • IOLC33
• IOSA22 • IOLC34
•IOLC30 •SCMD01
• SCMD01—KL15 • IOSC22—KL15 and +UE
• CCMB11—KL15 and
+UE
• IOLC35—KL15 and +UE