HARNESS AS-FRONT 3663855 - Caterpillar

Power Supply Module
The Power Supply Module supplies power to the following components: the Display, the Electric Masts, the ATS Target, the Grade Slope Control ECM, the GPS Receivers and the Sonic Tracer. The Power Supply Module includes power conditioning and control circuits, as well as overcurrent and load dump protection.
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Table 16 shows the features and the functions of the Power Supply Module.
Table 16
Features and Functions of the Power Supply Module    
Callout     Feature     Function    
29     8-socket power input connector     Connects the Power Supply Module to the machine power    
30     8-pin main harness Connector     Connects the Power Supply Module to the main harness    Contact Description Of The Power Supply Module
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Connector A
Table 17
Contact Description Of Power Supply Module    
Connector A    
A     +Battery 1    
B     Ground    
C     +Battery 2    
D     Ground    
E     Over-Current Fault    
F     Unused    
G     +Battery 3    
H     Ground    
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Connector B
Table 18
Contact Description Of Power Supply Module    
Connector B    
A     Switched Power 1    
B     Switched Power Return 1    
C     Switched Power 2    
D     Switched Power Return 2    
E     Awake    
F     Awake Return    
G     Switched Power 3    
H     Switched Power Return 3    Relays
MPT Relay
The MPT Relay is located on the Display Harness. The relay controls the awake pin on the PM400 module.Power Module Enable Relay
The Power Module Enable Relay is located near the Grade/Slope ECM. The relay provides power to the display and Power Module.Implement Enable Relay
The Implement Enable Relay is located near the Grade/Slope ECM. The relay opens the solenoid return wire in order to prevent unexpected blade movement.Hydraulic Valves
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The AccuGrade System uses 2 hydraulic valves to automatically control the blade.
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Blade Lift (Right) (51) Head-end Counterbalance Valve (52) Rod-end Counterbalance Valve (53) Load Sense Check (54) Flow Compensator Valve (55) Load Sense Shuttle (56) EH Control Valve (57) Bank ValveOne hydraulic valve controls the lift and lower for the left cylinder. The other hydraulic valve controls the lift and lower for the right cylinder.GPS Base Station
The AccuGrade System is an RTK rover configuration. The system requires a GPS Base Station somewhere near the project.Note: GPS Base Stations are not supplied by Caterpillar.A GPS Base Station consists of the following components.
GPS Receiver
GPS antenna
Radio
Cables
Power supplyThere may also be a tripod or mast for the GPS antenna and the radio, depending on the particular site. For construction sites where work can continue for a long time, use a semi-permanent location such as the roof of the site office. A reliable power supply is needed.Make sure that the base GPS antenna is clear of obstructions, reflected GPS signals (multipath), and sources of electro-magnetic interference such as power lines.The base station's data radio must be elevated several meters off the ground in order to provide optimum coverage.The GPS base station requires