Doosan 10/370, Operation And Maintenance Manual

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Operating & Maintenance Manual Electrical
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Electronic Engine
The HP1300/1600 machine contains an emissions certified diesel engine. In order to meet the
emissions requirements, the engine has an electronic control system.
The control system handles all the monitor, alarm and control functions for the engine. The
WEDGE controller communicates with the engine controller over the J1939 CAN network.
J1939 Data Link - The CAN network is a single pair shielded cable located with the W1 main
harness. Figure 8-3 shows a layout of the CAN harness or “backbone” as it is referred to. The
termination resistors (Terminator) are important to prevent reflections on the transmission line
and must be in place for the network to function properly. The shield from the cable is floating
at the WEDGE controller end.
The engine diagnostics connector is located on the left side of the engine. This is used to
connect the engine manufacturer’s service tools to the CAN network. This connector also
provides 24V DC power to these service tools.
Electrical System
The electrical system consists of the wiring harnesses and associated electrical devices such
as relays, switches, lights, solenoids and alarm horn. There are two wiring harnesses in the
machines. They are as follows:
The schematic diagrams show the connections for these harnesses. Figure 8-1 is a system
diagram showing harness connection with devices and controllers.
The electrical circuits are protected using ATC style fuses. A fuse should only be replaced with
one of the same rating. Replacing a fuse with one of a larger rating could lead to harness
damage. If a fault occurs and the circuit does not have the appropriate size fuse, wires could
be burned in the harness and damage other circuits.
Software versions 1.60 and greater use software to set the machine ID. Versions less than
1.60 use an ID resistor plug, R2. The ID plug is located behind the control panel box on the
W1 harness trunk. The resistor plugs are molded in colors for easy identification.
It is recommended that all machines be upgraded to version 1.60 or greater. The software set
machine ID is much more reliable than the resistor plug.
22614416 W1 Chassis Main Wiring Harness
22108690 Control Panel Wiring Harness