Electrical/Control Systems

Electrical Control System

Electrical Control System General Information

The electronic control system in the machine uses a combination of switches/relays and computer-based components.

The computer-based components communicate with each other using a Controller Area Network (CAN) communication protocol.

CAN System General Information

The electrical system uses the SAE J1939 standard for Controller Area Network (CAN) communication and diagnostics.

CAN is a message-based protocol, allowing communication between devices without the need for a host computer. It provides communication between control system components used throughout the machine.

Devices communicate with each other through a two-wire, serial bus connection (CAN high and CAN low). The wires are 120 ohm nominal twisted pair.

The main components of the CAN system are:

•Multi-function Control Module (Controller 3)

•Engine Control Module (ECU)

•Main Power Relay 2

•Lift Arm and Standard Auxiliary Flow Control Module (Controller 1)

•Control Module (R) (Controller 2)

•High-Flow Module (Option)

•Multi-Function Display

CAN allows various devices on the network coordinate functions. For example, CAN messages generated by the multi-function control module are acted upon by the ECU (or vice-versa) to coordinate engine control.