JLG 3246E2 ANSI Service Manual - Manual (Page 50)

SECTION 2 - PROCEDURES
2-36 – JLG Lift – 3120737
2.21 JLG SMART SYSTEM™ ANALYZER KIT
INSTRUCTIONS
NOTE: The following instructions involving the JLG SMART
System™ Control are used only for Model 3246E2
with the Proportional Control option.
WHEN INSTALLING A NEW SMART SYSTEM CONTROLLER ON
THE MACHINE, IT WILL BE NECESSARY TO PROGRAM THE CON-
TROLLER FOR THE PROPER MACHINE CONFIGURATION,
INCLUDING OPTIONS. REFER TO ANALYZER KIT NO. 2901443.
WHEN INSTALLING A NEW SMART SYSTEM CONTROLLER ON
THE MACHINE, ELECTRICAL SILICONE GREASE, JLG PART
NUMBER 0100076 OR 7016397, MUST BE APPLIED TO THE BACK
OF THE CONTROLLER.
IT IS A GOOD PRACTICE TO AVOID PRESSURE-WASHING ELEC-
TRICAL/ELECTRONIC COMPONENTS. SHOULD PRESSURE-
WASHING BE UTILIZED TO WASH AREAS CONTAINING ELECTRI-
CAL/ELECTRONIC COMPONENTS, JLG INDUSTRIES, INC. REC-
OMMENDS A MAXIMUM PRESSURE OF 52 BAR (750 PSI) AT A
MINIMUM DISTANCE OF 30.5 CM (12 IN) AWAY FROM THESE
COMPONENTS. IF ELECTRICAL/ELECTRONIC COMPONENTS
ARE SPRAYED, SPRAYING MUST NOT BE DIRECT AND BE FOR
BRIEF TIME PERIODS TO AVOID HEAVY SATURATION.
INTRODUCTION
The JLG designed SMART System™ is a 24 Volt multiplex
motor control unit installed on the electric scissor lift
model 3246E2.
The SMART System™ has reduced the need for exposed
terminal strips, diodes and trimpots and provides simplic-
ity in viewing and adjusting the various personality set-
tings for smooth control of: acceleration, deceleration,
creep and max-speed for the lift, drive, steering and
optional power deck functions. The function select mem-
brane board, in the upper control box, also eliminates the
need for toggle switches and a separate power enable
button as this feature is built into each function select but-
ton on the board itself.
The lift, drive and optional power deck functions are con-
trolled by a joystick, with steering being controlled by a
rocker switch built into the top of the joystick. Drive, lift,
and the optional power deck functions are selected by
first pushing the appropriate momentary select buttons on
the membrane board and then moving the joystick either
in the “A” or “B” direction. If the joystick is not activated
within three seconds of selecting a function, it will be nec-
essary to re-select a function. High drive and positive trac-
tion are used in conjunction with the drive function.
The motor controller will control current output, as pro-
grammed for smooth operation and maximum cycle time.
Ground control speeds for platform lift and the optional
power deck are also programmed into the motor control-
ler. The motor controller also features an adjustable time
limit for positive traction. Another power saving feature is
the high speed drive current limit. This feature will auto-
matically control the drive speed and controller output
when it exceeds the pre-set current limit for a specified
time and reduce the motor speed, thus conserving power.
For safety, the machines are equipped with pothole pro-
tection and elevation cutback. The pothole protection is
employed as the platform is raised. If the pothole protec-
tion does not extend, the drive function will be disabled.
When the platform is raised, the drive function goes into
creep mode.
The JLG SMART System™ controller has a built in LED to
indicate any faults. The system stores recent faults which
may be accessed for troubleshooting. Optional equip-
ment includes an hourmeter, beacon light, tilt switch (light
and/or alarm), power deck, power deck extension limit,
function cutout, and ground alarm. These options may be
added later but some must be programmed into the motor
controller when installed.
The SMART System™ may be accessed by utilizing a cus-
tom designed, hand held analyzer (JLG kit no. 2901443)
which will display two lines of information at a time, by
scrolling through the program.
NOTE: The date code is determined by the first four digits of
the controller serial number which is located on the
label attached to the front of the controller.
The part number of the controller is located on the
controller decal.
Figure 2-12. JLG SMART System Controller