Major Electrical System Features
• Keep It Simple philosophy - a simple hard-
ware design with fewer parts - better relia-
bility
• Programmable setup of the truck with opera-
tor controls and dash display
• Non-contact encoders that give position of
lift, steering input, and steer drive tire angle
• Variable Hall effect sensor for throttle
• On-board diagnostics with text display
• AC traction motor and controller
• Regenerative braking for minimal wear of
park brake
• Control Area Network (CAN) bus digital
data link
• Alphanumeric multifunction display
• Continuous height sensing (encoder)
• Height, steer angle, and travel speed rela-
tionships
• Battery discharge indication adjustable for
regular or maintenance-free batteries
INTEGRATED SYSTEM
This truck uses a CANbus, two-wire, twisted pair,
serial communications network bus to connect sev-
eral electronic subsystems together to form one in-
tegrated system.
CANBUS ADVANTAGES
• Increased reliability
• Substantial reduction in connections and
wiring complexity
• Extensive function monitoring capability
• Serial bus simplicity (two wires)
• Easy information exchange between subsys-
tems
CANBUS COMMUNICATIONS
Electronic controllers connected by the CANbus
data link are as follows:
• Display
• Traction
• Steer
• Steer Caster (Optional)
• Pump
• Auxiliary Pump (Americas Only)
• Handle
• Impact Module (Optional)
• CAN I/O
• Remote Module (Americas Only)
The CANbus carries the following data:
• Traction throttle
• Traction direction
• Horn
• Lift/Lower
• Steering position and steering rate
• Status information and diagnostic informa-
tion.
Electric Steering / Steer Caster (Optional)
The electric steering is accomplished using an AC
Induction Motor connected to a 50:1 gear reduction
unit. This AC motor and gear reduction unit is sup-
plied complete and is called the Steer Unit Assem-
bly. The AC Induction Motor is powered by a 3-
Phase AC Induction Motor Controller. The AC In-
duction Controller accepts steering commands via
the CANbus from the CAN I/O unit located under
the dash.
2200 SRM 1612 Major Electrical System Features
7
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