SECTION 3 - CHASSIS & TURNTABLE
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3.23
SWING SPEED PROPORTIONING
Swing Speed Proportioning uses main boom length switches
and envelope control sensors to improve comfort, speed, and
control of the turntable swing function.
Turntable swing speed is increased as distance of the platform
to center of rotation is decreased and when the tower boom is
lowered in angle. This results in approximately constant plat-
form speeds regardless of boom position.
Swing speed proportioning is disabled with any envelope sen-
sors failure. Disabling of swing speed proportioning will
default to the slowest swing speed setting.
NOTE:
For detailed information concerning system adjustment
and operation, refer to Section 6 - JLG Control System.
3.24
CHASSIS TILT INDICATOR SYSTEM
The Chassis Tilt Indicator System measures turntable angle in
comparison to level ground. The tilt sensor (which is an inte-
gral part of the ground module) has three settings; 3.0° side
tilt, 5.0° omni directional tilt, and 8.0° omni directional tilt.
The 5.0° omni directional angle setting is used to warn the
operator by using the chassis tilt light in the platform display
panel. When used with the Beyond Transport - Drive Speed
Cutback System (Section 4.3, Beyond Transport - Drive Speed
Cutback System), the tilt sensor will cause an alarm to sound
and automatically place all functions in creep speed mode.
With the exception of the speed cutback, this is a warning sys-
tem only indicating to the operator the machine has reached
the out of level limit. The machine will continue to function.
The operator is responsible to prevent the machine from
reaching an unstable position.
The 3.0° side tilt setting is used in combination with boom
position and when exceeded, imposes the same functionality
as the 5.0° omni directional setting. The side tilt setting is
ignored when the tower boom is less than 60° regardless of
main boom position, and is proportionally increased in value
up to 5.0° as the main boom is lowered from high angles to
horizontal when the tower is above 60°.
The 8.0° angle is used only for automatically shifting the drive
motors to the maximum displacement position (slow speed).
The control system responds to indicated angle readings 0.5
degree smaller than the required angles to account for calibra-
tion and sensor variation.
NOTE:
For detailed information concerning system adjustment
and operation, refer to Section 6 - JLG Control System.
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