Group 10 Boom Floating Control System - Hyundai HX145LCR Manual

GROUP 10 BOOM FLOATING CONTROL SYSTEM

LH control
lever
Breaker
button
SL SR AO AI BI
PS
PS PS
Boom up
Boom floating automatically controls boom cylinder along the ground by operating arm cylinder
only.
Description
1
Floating mode
Work mode
General mode
Boom up/down
Boom down
Breaker mode
Temporarily canceled
1 Boom floating is not activated when work mode is crusher mode.
2
These functions are activated just in case the excavator is not in jack up status.
RH control
lever
BU BD
Pressure signal
Pressure signal
Switch signal
PS PS
Pressure signal
Boom
down
pressure
pressure
Boom up
Floating mode sw : ON
2
floating
Floating mode sw : ON
Breaker button : Pressed
2
floating
Boom down pilot pressure 25 bar
Boom up pilot pressure 5 bar
Floating mode sw : ON
Breaker button : Pressed
floating
Boom down pilot pressure 25 bar
Boom up pilot pressure 5 bar
During operation of boom floating
Boost sw : Pressed
Rod pressure
PS
Head pressure
PS
Head to tank
solenoid
Boom down pilot
cutoff solenoid
Boom 1 spool
Boom down pilot
Main pump
Signal
Signal
Signal
MCU
Boom floating signal
Condition
5-13
Boom cylinder
Rod to tank
solenoid
Main control valve
Pilot pump
Function
Rod to tank solenoid : ON
Head to tank solenoid : OFF
Boom down cutoff solenoid : OFF
Rod to tank solenoid : ON
Head to tank solenoid : ON
Boom down cutoff solenoid : ON
Rod to tank solenoid : OFF
Head to tank solenoid : ON
Boom down cutoff solenoid : ON
Rod to tank solenoid : OFF
Head to tank solenoid : OFF
Boom down cutoff solenoid : OFF
145ZF5MS12