JLG 15VPSP Operator Manual - Manual (Page 42)

SECTION 5 - OPTIONAL EQUIPMENT
5-2 – JLG Lift – 3120796
5.2 OBSTRUCTION SENSING SYSTEM (OSS)
System Description
The Obstruction Sensing System (OSS) is designed to
detect the presence of obstructions under the platform
which are present in the detection zone. The system con-
sists of a central electronics module connected to six
ultrasonic transducer sensor arrays located on the under-
side of the platform. The transducer sensors transmit
ultrasonic sound beneath the platform and detect the
presence of obstructions under the platform which are
within a defined detection zone. If an obstruction is
present in the detection zone, the OSS will stop the lower-
ing of the platform until the obstruction is removed. The
OSS system does not affect ground control functions.
Operation
When power is applied to the OSS, the red LED on the
electronics module will illuminate. If no obstructions are
located within the detection zone beneath the platform,
the lift will operate normally.
If an obstruction is detected within the detection zone
beneath the platform, the platform will;
• Stop Lowering
• The LED on the electronics module will flash
• The horn will sound three short blasts
If an obstruction is detected, have the obstruction cleared
by someone on the ground or carefully drive the lift until
clear of the obstruction. Reset the OSS by pressing the
horn button once and continue normal operation. Should
the OSS falsely detect an obstruction, the system can be
overridden by pressing and holding the horn button while
operating the lift/lowering controls. (See Figure 5-2.)
ALWAYS BE CERTAIN THE AREA UNDER THE PLATFORM IS
CLEAR OF OBSTRUCTIONS BEFORE LOWERING THE PLAT-
FORM.
Figure 5-1. Transducer Sensor Array Location.
(Underside of Platform)
Figure 5-2. Horn Button on Platform Control.
#5
#3
#1 #2
#4
#6
FRONT OF
PLATFORM
PLATFORM
BOTTOM
T
R
AN
S
D
UCER ARRA
Y
T
R
AN
S
D
UCER ARRA
Y
HORN
BUTTON