Limit Switches And Angle Sensors - Genie S-65 XC Service And Repair Manual

Service and Repair Manual

Limit Switches and Angle Sensors

Types of Limit Switches
There are two types of limit switches, found in
various locations throughout the machine:
mechanical-type operational/safety switches and
rotation or angle sensors. As in aircraft, which
features redundant safety systems, each
mechanical operational switch is backed up with a
separate, independently functioning safety switch.
The mechanical-type operational or safety
switches are used to sense a positive displacement
or movement of the limit switch actuator, or arm, as
the machine moves through its range of operational
functions. The rotation or angle sensors utilize Hall
Effect technology and must be calibrated when
replaced. Included in this group are envelope limit
switches which sense the extended length and
angle of the booms and rotational position of the
turntable.
An example is the drive enable limit switch, which
disables the drive function anytime the boom is
rotated past the rear tires, indicated by the 'circle'
end of the drive chassis.In some cases, the engine
will be stopped if safety parameters are exceeded.
138
LS
Limit
LS
Switch
LT Stringpot
RS Rotary
Sensor
® ™ ® ™
S -60 XC • S -65 XC
September 2018
Numbering Legend
FA 1 L
Front Circuit Load
FA L
Axle Number moment
Rear
RA A Angle
Axle
LF Left Front D Down
LR Left Rear E Extend
RF Right R Retract
Front
RR Right
Rear
J Jib Boom
P Boom
T Turntable
Part No. 1288652GT
O
O Operational
S Safety