Manitowoc MLC650, Service Maintenance Manual

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Reference
Only
Manitowoc
Published 09-09-16, Control # 229-09
10-33
MLC650 SERVICE/MAINTENANCE MANUAL ACCESSORIES
10
10
Setup Remote and J4 Joystick Control
Setup Remote Overview
NOTE: The setup remote is covered in Section 4 of the
Operator Manual.
The setup remote control communicates with the CCM-10
control module using the controller area network bus (CAN
Bus). The crane control modules use the CAN Bus to
communicate with each other.
Neutral Position Using Setup Remote or J4 Joystick
See Figure 10-26 for the following.
When the setup remote or J4 joystick is not sending a
command and the manual control lever on the mast assist
and self-assembly cylinder valve assembly (1) is in the
neutral position, the corresponding valve spool is held in the
neutral position by the return springs. Hydraulic fluid from the
accessory pump is prevented from flowing to the self-
assembly cylinder.
When in neutral, the load-hold valve (2) is closed, stopping
the flow to and from the rod end of the self-assembly
cylinder. The cylinder is held in position by trapped hydraulic
fluid.
Extend Cylinder Using Setup Remote or J4 Joystick
See Figure 10-27 for the following.
When the setup remote or J4 joystick sends an extend
command, the IOLC30 control module energizes the self-
assembly cylinder extend solenoid on the mast assist and
self-assembly cylinder valve assembly (1). The extend
s o l e n o i d v a l v e r o u t e s p i l o t h y d r a u l i c f l u i d t o t h e
corresponding valve spool. This causes the valve spool to
shift to a position that allows hydraulic fluid from the
accessory pump to flow to the piston end of the cylinder. It
also provides pilot pressure to the load-hold valve (2),
causing it to open.
With hydraulic fluid from the accessory pump flowing to the
piston end of the cylinder and the load-hold valve being
open, the cylinder rod extends, forcing hydraulic fluid in the
rod end of the cylinder back to the tank via the load-hold
valve.
Retract Cylinder Using Setup Remote or J4 Joystick
See Figure 10-27 for the following.
When the setup remote or J4 joystick sends a retract
command, the IOLC30 control module energizes the self-
assembly cylinder retract solenoid on the mast assist and
self-assembly cylinder valve assembly (1).
The retract solenoid valve routes pilot hydraulic fluid to the
corresponding valve spool, causing the valve spool to shift to
a position that allows hydraulic fluid from the accessory
pump to flow through a check valve at the load-hold valve
(2). This allows the hydraulic fluid to flow through the load-
hold valve to the rod end of the cylinder, causing the cylinder
rod to retract. At the same time, hydraulic fluid in the piston
end of the cylinder is forced out and back to the tank.