Landoll Drexel SLT30 AC, Руководство оператора

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3-6
UNDERSTANDING SLT30AC TRUCK
Electrical System
The electrical control system is
controlled by a vehicle master
controller which in turn controls two
A.C. motor controllers (pump and
traction), a steering controller, a
dash display and an optional wire
guidance unit. Also included in the
electrical system are a joystick,
solenoid contactors, safety
interlocks, three A.C. motors, a
torque feedback device, a
proportional control valve, power
cables, fuses and electrical
harnesses.
The following paragraphs provide
more detail about the various
components that make up the
electrical system:
Vehicle Master Controller
The vehicle master controller is the
main control unit for the truck. It
controls inputs from and outputs to
the three A.C. Motor controllers as
well as a wire guidance unit,
joystick, Torque Feedback Device
and the dash display.
Traction
The traction system is comprised of
an A.C. drive motor with a maximum
rating of 525 amps. It is controlled
by a single A.C. motor controller that
is ultimately controlled by the vehicle
master controller(VMC). A sensor
inside the motor calculates actual
motor speed and provides feedback
to the controller for precise smooth
operation. SLT30 AC Model trucks
are three wheeled trucks where the
rear wheel both drives and steers
the truck. The A.C. drive motor is
coupled to a helical bevel drive unit
to power the truck.
Main Pump Motor (Lift)
The A.C. lift motor has a maximum
rating of 525 amps and is controlled
by its own A.C. motor controller
(identical to the traction controller),
which is ultimately controlled by the
VMC. Just like on the traction motor,
a sensor inside the pump motor
allows for the calculation of actual
motor speed providing feedback to
the control system. Motor speed and
acceleration during lift, tilt, side-shift
and pivot functions are
independently programmable. A
non-contact hall effect sensor within
the joystick senses the joysticks
position and controls the motor
speed. Operating temperature and
amp draw of the motor are reduced
affording longer run times per
shift.The maximum speed of the
motor for each function is
programmable, thus reducing
hydraulic fluid heat and power
consumption. SLT30 AC controllers
provide more smooth and precise
function speed control.
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