Genie S-100, Руководство по обслуживанию, Страница: 30 / 497

3 - 2 Genie S-100 & S-105 & S-120 & S-125 Part No. 62401
Section 3 • Theory of Operation First Edition • First Printing
THEORY OF OPERATION
Service Bypass/Recovery
Key Switch
The Service Bypass/Recovery key switch is only to
be used by properly trained service personnel.
When the Service Bypass/Recovery key switch is
turned to the
service bypass position, the boom
can be raised while the axles are retracted. This
feature of the machine is especially helpful for
storage purposes or when loading the machine for
transport. When the boom is raised with the axles
retracted, the boom cannot be rotated past either
circle-end wheel.
When the Service Bypass/Recovery key switch is
turned and held to the
recovery position, the
auxiliary power unit will turn on and fully retract the
boom, and then lower the boom to a stowed
position. This feature of the machine is especially
helpful if the operator in the platform cannot lower
the boom, if the platform controls become
inoperative or for returning the machine to a safe
position when the safety switches have been
tripped.
Machine Controls
Three ECMs manage the boom functions. They
are located at the turntable (ground controls or
TCON), the platform (platform controls or PCON)
and the drive chassis (drive chassis controller or
DCON). Communication between the controllers is
maintained via a high speed data bus (CAN bus).
For example, steering inputs from PCON are sent
to DCON via the high speed data bus using
multiplexed signals.
A series of proximity switches and mechanical limit
switches provide information to the controllers.
These proximity and mechanical switches maintain
and define the safe operating parameters of the
machine. In addition, there is a back-up safety
system using mechanical limit switches which will
cut power to selected portions of the controllers
should the operational system fail to operate
properly.
The ground controls (TCON) have membrane
operated switches. They are non-tactile touch
switches for greater durability. When one button is
pressed there is an audible beep indicating
operation. In addition, there is a display on the
ground control box that is used to show fault
codes, engine condition, machine status and
setup, and the display language selected. Boom
speeds, turntable rotation and ramp rates are
adjustable. Also, various options and operating
limitations can be programmed. For example, the
boom extension can be limited to 80 ft (24.4 m) or
100 ft (30.5 m).
The platform controls (PCON) has three joystick
controllers for operational control. Drive and steer
functions are controlled through one dual-axis
joystick, boom up/down and turntable rotate
functions are controlled through another dual-axis
joystick, and the boom extend/retract functions are
controlled through a single axis joystick. Standard
toggle switches are used to control the platform
level up/down, platform rotate and jib boom up/
down functions (S-105 and S-125 models).
Membrane type switches are used to select the
various steering and operating modes.