Hyster D264, Руководство по обслуживанию и ремонту

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Centering Proximity Sensor
CAUTION
It is very important that the proximity sensor be
connected to the harness and that the sensor air
gap is set correctly prior to key-on. If the proxim-
ity sensor is not in place and not able to sense the
target plate, then the steer system will hit the me-
chanical stops at key-on. If the steer system hits
the mechanical stops, then the steer motor and
gear reduction assembly must be replaced.
Every time the key switch is turned on the steering
system centers the drive wheel. The steering sys-
tem uses the feedback from a proximity sensor
mounted next to the drive unit assembly. The prox-
imity sensor senses a target plate that establishes
the drive wheel center position. If the optional
steered caster is installed, the truck also centers
the caster wheel using it's proximity sensor.
Traction
Traction is provided by an AC motor and a control-
ler. The controller is connected to the CANbus com-
munications link over which it receives commands
and reports faults and status information. The trac-
tion controller also has auxiliary transistor outputs
that control the traction main contactor, lift pump
contactor, lower solenoid valve, brake coil, and
horn.
CAN I/O
The CAN I/O connects the following devices to the
CANbus network.
Input Devices
• Proximity Sensor - The Proximity Sensor is a
sourcing PNP sensor that provides a voltage
input signal to the CAN I/O when the sensor
senses ground.
• Height Encoder - The Height Encoder is a
hall effect sensor that provides the CAN I/O
with a two-channel digital input signal.
• Pressure Sensor - The Pressure Sensor is a
three-wire pressure transducer that provides
the CAN I/O a linear 0 to 5 Vdc signal pro-
portional to hydraulic pressure.
• Main Steer Status - The CAN I/O receives a
hardwired input signal from the Main Steer
Controller when steering is active.
• Caster Steer Status - The CAN I/O receives a
hardwired input signal from the Caster Steer
Controller when the caster is active.
Output Devices
The following CAN I/O outputs are low-side driver
controlled, meaning the CAN I/O Controller will
provide a device ground when requested.
• Load Hold/Lift Coil
• Lower Coil
• Auxiliary Steer Coil
• Side-Shift Coil
• Tilt Coil
• Extend/Retract Coil
• Controller Fan
• Component Fan
• Backup Alarm
• Horn
• Strobe light (Relay)
Major Electrical System Features 2200 SRM 1612
8