JLG 680S, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
4-48 3121234
Additional Platform and Jib Valves
The high side drivers for the platform left and right and the jib up
and down valves are be located in the Platform Module and are
PWM’d. The control for these functions are the same as currently
implemented for the EPBC except that the flow through the
valves is individually controllable instead of controlled by single
the flow control valve. The individually controlled duty cycle will
be the same as would otherwise have been commanded to the
flow control valve.
Only one platform or jib function is allowed at one time to limit
the amount of current draw, minimizing the voltage drop on the
supply to the PM.
The function is enabled first shall remain active until it is
released. Any other function commanded while another func-
tion is active is ignored.
If only one other function is commanded when the active func-
tion is released, the other function will be activated.
If more than one function is commanded when the active func-
tion is released, only one function shall be activated.
Platform Leveling Calibration Procedure
STEP 1: SETTING THE PLATFORM VALVE MINIMUMS
1. Put machine into “Ground Mode”.
2. Start machine and plug in Analyzer.
3. Go to the “Access Level 2” screen.
4. Enter “33271” to get into Access Level 1 mode.
5. Go to the “Personalities” menu and adjust the following
personalities. Refer to the Personality Ranges/Defaults
table in Section 6 - JLG Control System for proper setting
values.
Basket Level Up Min
Basket Level Up Max
Basket Level Down Max
Jib Up Min
Jib Down Min
6. Recycle EMS.
STEP 2: CALIBRATING THE PLATFORM LEVEL
SENSORS (FOR PLATFORM SOFTWARE PRIOR TO VERSION
P3.4)
1. Put machine into “Ground Mode”.
2. Start machine and plug in Analyzer.
3. Manually level the platform with the switch on the MTB.
4. Go to the “Access Level 2” screen.
5. Enter “33271” to get into Access Level 1 mode.
6. Go to the “Calibrations” menu and hit ENTER.
7. Use RIGHT ARROW go to “Plat. Leveling” screen.
8. Hit ENTER. “Calibrate?” prompt should appear.
9. Hit ENTER again to calibrate level sensors.
10. When calibration has been successful “Cal Complete”
should appear.
11. Cycle power to the machine.
STEP 3: BLEEDING THE PLATFORM VALVES
Start up the machine and exercise the following platform func-
tions (from the ground) eight (8) to ten (10) times for 5 seconds
in each direction.
Basket Rotate
Basket Level
Jib U/D (if configured)