JLG 1850SJ Service And Maintenance Manual Download

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SECTION 6 - JLG CONTROL SYSTEM

6-62

3121619

If the initial conditions are not met, the controller will
prompt the operator with analyzer messages “BLAM
CAN LOST”, “AXLE VALVE FAULT”, OSC AXL SW FAULT”,
“PARK BRAKE FAULT”, “ANGL SNSR1 FAULT”, “ANGL SNSR2
FAULT”, “MOMENT PIN FAULT”, “LEN SNSR FAULT”, “CAL
STEERING”, “CAL TILT SENSOR”, “CAL UPPER TELE”,
“EXTEND AXLES”, “LEVEL MACHINE”, “CENTER WHEELS”,
“TELE IN”, “ALIGN TURNTABLE”, “CENTER JIB SWING”,
“SELECT GRND MODE”, “JIB TRANSPORT SENSOR FAULT”,
“JIB LEVEL SENOSR FAULT”, JIB SWING SENSOR FAULT”,
“MAIN CYL ANGLE SENSOR FAULT”, “JIB LIFT SENSOR
FAULT”, “PLATFORM LEVEL SENSOR FAULT”, “TURN TABLE
SENSOR FAULT”, “JIB TELE IN”, “LOCK JIB PIN” and
“REMOVE DONGLE” to satisfy the initial conditions. The
controller will then prompt with “UNLOAD PLATFORM?”,
“JIB HORIZONTAL?”, “LEVEL PLATFORM?”, “CENTER PLAT-
FORM?” and “TELE IN TO STOP?”.

Once the initial conditions are verified, the controller will
display “SKY WELDER NO”. If a sky welder is installed, the
operator presses an ARROW key to switch to “SKY
WELDER YES. A similar set of menus will prompt the
operator to select sky cutter, sky glazier, sky bright, pipe
racks and camera mount.

If the operator selects sky bright the controller will dis-
play “CAL FAILED” and “REMOVE SKYBRIGHT”. If more
than one accessory is selected except for the combina-
tion of sky welder/sky cutter the controller will display
“CAL FAILED” and “# OF ACCESSORIES”. If a valid acces-
sory option has been selected after the camera mount
selection and the operator presses the ENTER key, the
controller will display “CALIBRATE?”. After the operator
presses the ENTER key, the controller will check that the
Main Cylinder Angle 1 sensor counts are between 100
and 14000 counts and that Main Cylinder Angle 2 sensor
counts are between 15000 and 32767 counts. If they are
not in the given ranges, the controller shall display “CAL
FAILED” and “CYLN SNSR1 FAULT” or “CYLN SNSR2
FAULT”. If the sensors are in range, the controller will dis-
able Envelope and Moment control, Telescope out, Jib
Lift/Swing, Jib Telescope and Basket Level/Rotate func-
tions and display “CAL POSITION 2” on the first line.

The controller shall display “LIFT UP TO STOP”. After the
operator presses the ENTER key, the controller shall dis-
play “CAL POSITION 3” and “SWING 180 DEG”. After the
operator presses the ENTER key, the controller must see
a change in the drive orientation switch or “CAL FAILED”
and “DRIVE ORNT SW” shall be displayed. The boom
angle sensors must also be within 10° of 40.6° (80.6° -
40.0° = 40.6° equals rough angle sensor mounting off-
set) or “CAL FAILED” and “ANGL SNSR# FAULT” will be
displayed. The controller shall also check that the Main
Cylinder Angle 1 sensor counts are between 15000 and
32767 and that sensor 2 is between 100 and 14000
counts or “CAL FAILED” and “CYLN SNSR1 FAULT” or
“CYLN SNSR2 FAULT” will be displayed.

The controller at this point shall disable lift down. The
controller will record the following: moment value
based on load-pin output, both boom angle sensor raw
outputs, both main cylinder angle counts and the
retracted length of the boom. The retracted length will
be set at 539.7”. The raw length sensor A/D counts must
between 100 and 1311 counts or “CAL FAILED” and “LEN
SNSR FAULT” shall be displayed.

The controller will display “CAL POSITION 4” on the first
line and “SWING 180 DEG”. After the operator presses
the ENTER key, the controller must see a change in the
drive orientation switch or “CAL FAILED” and “DRIVE
ORNT SW” will be displayed. The controller will record
moment value based on load-pin output and both
boom angle sensor raw outputs. If the change in right
boom angle sensor readings is more than 1.0° from the
change in left boom angle sensor readings, “CAL
FAILED” and “ANGL SNSR FAILED” will be displayed. If
this moment falls outside the expected calibration
moment range of 1.288E+06 to 1.932E+06, “CAL FAILED”
and “MOMENT PIN FAULT” will be displayed.

If no failures have occurred, The controller will enable
telescope out, disable swing, and display “CAL POSITION
5” on the first line and “TELE OUT TO STOP”.

10.

After the operator presses the ENTER key, the controller
will establish this length as 1911.7”. The raw length sen-
sor A/D counts must between 29220 and 31220 counts
or “CAL FAILED” and “LEN SNSR FAULT” will be displayed.

JLG 1850SJ, Service And Maintenance Manual

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