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EC21OB/240B/290B PRIME Update
New Engine
This material is combined as below.
01_General02_Engine 02-1_Engine(EC210B PRIME)
02-2_Engine(EC240B/EC290B PRIME)03_Electric system 03-1_Elec
sys04_Power Transmission 04-1_Power Trans(EC210B PRIME) 04-2_Power
Trans(EC240B/EC290B PRIME)05_Brake System06_Steering System07_Frame
& Undercarriage08_Cab & Interior09_Hydraulic
09-1_Hydraulic(EC210B PRIME) 09-2_Hydraulic(EC240B PRIME)
09-3_Hydraulic(EC290B PRIME)
09-4_Hydraulic(COMMON)10_EC210BF(Forestry machine for Brasil &
Russia)
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MAIN MENU
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Overview(EC210B PRIME)
1. New Engine- D6E EAE3(Tier 3): Serial number starts from
80001(CHW Production)- D6E EAE2(Tier 2): Serial number starts from
70001(CHW Production) and 35001(SHA Production) I-EGR is not used
in D6E EAE2 engine
2. Remote installation of filters- Engine oil filter, fuel
filter, water separater, Drain filter and pilot filter are
installed in pump room
3. Work mode refining- Pump input power of H & G mode are
increased by 5%
4. E-ECU(EMS2)- EMS-2 is used for both Tier 3 and Tier 2
engine
5. Electric box & Battery connection- Safety start relay
removed- Master switch removed
6. Fabricated counterweight
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Overview(EC240B PRIME)
1. New Engine- D7E EBE2(Tier 2): Serial number starts from
15001(CHW Production) and 35001(SHA Production) 2. Remote
installation of filters- Engine oil filter, fuel filter, water
separater, Drain filter and pilot filter are installed in pump
room
3. Work mode refining- Pump input power of H & G mode are
increased by 5%
4. E-ECU(EMS2)- EMS2 is used for D7E EBE2 engine
5. Electric box & Battery connection- Safety start relay
removed- Master switch removed
6. Fabricated counterweight
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Overview(EC290B PRIME)
1. New Engine- D7E EAE3(Tier 3): Serial number starts from
85001(CHW Production) - D7E EAE2(Tier 2): Serial number starts from
17001(CHW Production) and 35001(SHA Production) I-EGR is not used
in D7E EAE2 engine
2. Remote installation of filters- Engine oil filter, fuel
filter, water separater, Drain filter and pilot filter are
installed in pump room
3. Work mode refining- Pump input power of H & G mode are
increased by 5%
4. E-ECU(EMS2)- EMS2 is used for both Tier3 and Tier2 engine
5. Electric box & Battery connection- Safety start relay
removed- Master switch removed
6. Fabricated counterweight
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Overview(Main component)
- Comparison of specification with old machine
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Electronic control system overview
-EMS2 -WECU(MID142) is an option.
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2 stage port relief valve change
New 2-stage port relief valve function
(1) Neutral- When Hammer/Shear selection switch is off, relief
valve maintains high pressure setting.
(2) Hammer(1 way)- When Hammer selection switch is ON and X1
uses 1way, releif valve goes to low pressure setting due to pilot
pressure.
(3) Shear(2 way)- When shear selection switch is ON and X1 uses
2way, releif valve goes to high pressure setting due to pilot
pressure off.
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Double load check change
There have been some cases reported where the operating power of
attachments (Arm, Bucket, and Option) has been down and the
operating speed of attachments has been slow. This is caused by the
wear of double load check valve.
1. The shape of double load check valve has been changed to
improve the resistibility of wear.2. The heat treatment to
manufacture double load check valve been improved.
**After changing to the new one, there was also problem that the
new one can give damage to the block. Finally decide to use old
one.
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New Track Gearbox(EC210B/EC290B Prime)-New Internal structure of
gearbox -Increased strength of carrier assembly
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New Swing Reduction gearbox(EC240B/EC290B Prime)
Volume of reduction gear box was changed. This makes less gear
oil to fill up.
-Increased torque capacity by 10%.-Increased housing strength
with alloy steel with carburizing Pinion integrated shaft.
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Engine - D6E common rail engine
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Engine specification
EC210B PRIME(KOR) : D6EEAE3(Tier3)EC210B PRIME :
D6EEAE2(Tier2)
IEGR unit is not installed in D6EEAE2 Engine
Type: 4 cycle, Diesel, Turbo charged, Air to Air After
cooledNo.of cylinder : 6 vertical in line type
Max. Power(fan not in operation)
@1800rpm-------------------------------------------------EC210B
PRIME :123kW(167PS)
Max. Torque(fan not in operation)
@1350rpm---------------------------------------------------EC210B
PRIME :730Nm
Bore X Stroke: 98mm X 126mm (3.85in X 4.96in)Governor type:
EMS2Fuel injection: Common Rail Direct injectionDisplacement:
5700cc (347.8 cu.in)
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Main components
1.The most advanced Volvo engine controller, EMS2, will be
utilized to provide the highest level of electronic features and to
enhance reliability.
2.The IEGR(Jacobs system) creates a small second exhaust valve
lift. This extra lift feeds exhaust gases back into the cylinder
during the inlet stroke to reduce NOx.
3. Common RailWhereas in conventional diesel engines injection
pressure is generated for each injector individually, a common rail
engine stores the fuel under high pressure in a central container
(common rail) and delivers it to the individual injectors on
demand. Benefits of common rail injection are reduced noise levels,
stronger performance, improved emission control and greater
efficiency.
4.The new high-pressure solenoid diesel fuel
injector.(BOSCH-CRIN 2nd Generation Injector)
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External view(1)
1. Cam speed sensor2. Coolant temp. sensor3. Solenoid(IEGR)4.
Boost press. & temp. sensor5. Waste gate actuator6. Preheat
unit7. Injector8. Rail pressure sensor9. Engine oil press.
sensor10. Fuel Control Unit (PWM valve)-FCU11. Fuel pressure
sensor12. PTO
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External view(2)
1. Fuel feed pump2. Water pump3. Crank speed sensor4. Water in
fuel sensor5. Engine oil level & temp. sensor6. Ambient air
temp. & press. sensor7. Coolant level sensor8. Starter
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Electric circuit(EMS2)
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Wire harness drawing
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Fuel line
In conventional diesel engines injection pressure is generated
for each injector individually. A direct injection engine based on
the common rail principle separates the two functions pressure
generation and injection by first storing the fuel under high
pressure in a central container ("common rail") and delivering it
to the individual injection valves (injectors) only on demand. This
way an injection pressure of up to 1,600 bar (23,200 psi) is
available at all times, even at low engine speeds. The high
pressure produces a very fine atomisation of the fuel leading to
better and cleaner combustion. Moreover, the fuel supply is not
dependent on the engine revolutions but can be optimised
independently. The time and duration of injection is not fixed (as
in older conventional engines) but can be chosen independently for
every operation point in order to optimise combustion and
emissions.
Benefits of the common rail principle compared to conventional
engines are lower engine noise levels, stronger performance and
greater combustion efficiency leading to lower emissions and
enhanced fuel economy. Push "check result" button to see the actual
measuring data on the machine for reference only.
Picture text: 1: Manual feed pump2: Pre filter & water
separator 3: Fuel feed pump 4: Fuel filter5: Fuel pressure
sensor(low)6: Fuel control unit (PWM)7: High pressure pump8: Rail9:
Rail pressure sensor10: Max. pressure limit valve11: Injector12:
Thermostat valve
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Water seperator
1: Manual feed pump2: Manual nobe for thermostat valve3: Pre
filter & water separator 4: Water in fuel sensor5: Water drain
valve6: Normal position(thermostat function)7: Open position(Return
fuel to tank)8: Fuel warmer
L, M : For fuel warmerN,O : For water in fuel sensor
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Injector
The main injector components are: Hole-type nozzle(c), hydraulic
servo-system(b), solenoid valve(a). The forces required to open and
close the nozzle needle cannot be generated by the solenoid valve
on its own. The nozzle needle is therefore indirectly triggered via
a hydraulic force-amplification system.
1. Injector closed With the solenoid valve closed, the complete
chamber volume and the rail are at the same pressure. The nozzle
needle is forced against its seat by a spring. 2-1. Solenoid ON
When the solenoid valve opens, fuel flows from the valve control
cavity and into the fuel return.The feed throttle prevents complete
pressure equalization, and the pressure in the cavity drops.
2-2. Start of injectionHydraulic servo spool move up side and
the excess pressure in the chamber volume overcomes the spring
force and lifts the needle so that injection can start.
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Rail
1. High pressure storage of injection system2. Rail contains
pressure relieve valve(a) and rail pressure sensor(b).3. Pressure
relief valve- Pressure relieve valve is a mechaninical safety
device, which opens at 1950 (-100) bar / 28,275 psi (-1,450 psi)
and protects the system concerning over pressure caused by any
malfunction.-If opened the rail pressure remains in the range of
650 - 850 bar (9,425~12,325 psi) (dependend on speed and load). The
engine keeps running but if necessary with decreased performance
(limp home mode)-Under usual conditions the relief valve will not
open during engine operation.4. Rail pressure sensor- Output signal
goes to ECU and ECU controls FCU by using this signal.- If any
malfunction is detected, the ECU may force the pressure relief
valve to open by putting over pressure onto the system.
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Fuel control unit (FCU)FCU controlles filling of high pressure
pumps. It is just delivered as much as needed to reach or keep the
rail pressure set-point.This is an inverse proportional PWM valve.
At the inside of valve, there are overflow valve and bleed-off
orifice.
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IEGR(Jacobs system)NOx reduction solution is provided by
Internal Exhaust Gas Recirculation (IEGR) which is altering engine
valve lift. Jacobs IEGR reduces peak combustion temperatures and,
therefore, reduces the formation of Nitrogen Oxides (NOx) to levels
acceptable to meet upcoming emissions standards.
Picture text: A: IEGR SolenoidB: Control valveC: Slave pistonD:
Master pistonE: Connection passageF: Bleed hole(1 mm, 0.04 in)
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IEGR operation1. IEGR consists of a solenoid valve, control
valve, and master and slave pistons. These components are assembled
into a housing. 2.When the solenoid is de-energized, the control
valves move down and the high-pressure oil is released through the
tops of the control valve bores.3. When the IEGR is activated, the
solenoid allows oil to pass to the control valve. The control valve
moves up and the check ball in the control valve is unseated,
allowing oil to fill the master/slave piston circuit.4.The oil
pushes the master piston out, and when rocker motion pushes the
master piston back, high pressure is created which seats the check
ball in the control valve.5.Continued rocker motion causes the
high-pressure oil to move the slave piston. The slave piston motion
causes the exhaust valves to open. As the rocker moves back down,
the master piston follows, and the slave piston moves up, allowing
the valves to close again, ready for the next cycle. These cycles
continue as long as the brake solenoid is energized.
Picture text: 1: IEGR Solenoid2: Bleed hole: 1 mm (0.04 in)3:
Slave piston4: Master piston5: Intake rocker arm6: Exhaust rocker
arm7: Control valve8: Oil supply line: 2~5 bar (29~73 psi)
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Valve lash adjustment(1)Allow the engine to cool down for at
least 30 minutes before setting the valve clearance.Engine oil
temperature should be lower than 80 C.The clearance of the IEGR
side must be set after setting other valves clearance.Before
adjusting the valve clearance, remove the IEGR unit
first.(a)Install the crankshaft rotating tool.(b)Make No.1 cylinder
to be overlapped.(c)Adjust the valve marked black as shown in the
next page.(d)Rotate crankshaft 360 degree.(e)Adjust the valve
marked black as shown in the next page.
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Valve lash adjustment(2)-Install the protractor disk.-Turn the
adjusting screw clockwise till making contact with valve-Turn the
adjusting screw counter-colockwise up to the descripted angle.(f)
Inlet: 75 degree(g)Exhaust: 120 degree.-Tighten the lock
nut(1).
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Valve lash adjustment(3)
After adjusting inlet and exhaust, reassemble the IEGR unit.
When reassembling, replace the o-ring on the connection pipe
between two IEGR valve blocks. Now the No.6 piston is in overlapped
condition.(a)Adjust IEGR piston on the cylinder 1, 3 and 5
first.(b)Turn the crank shaft 360 degree.(c)Adjust the cylinder 2,
4, 6 accordint to following procedure.-Install the clearance
adjusting disk.-Turn the adjusting screw(2) of the slave piston
clockwise till making contact with exhaust valve.-Turn the
adjusting screw counter-colockwise up to 144 degree.- Tighten the
lock nut(1).
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Engine protection functionSID42 : Fuel Control Unit(FCU)PID164:
Rail pressure sensorSID1~6 : InjectorPPID435: Effective torque
common railPSID96: Rail pressure systemPSID97: Pressure relief
valve
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Engine - D7E common rail engine
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Engine specification
Common Rail Direct Injection
type-------------------------------------EC240B PRIME : D7E
EBE2(Tier2)
EC290B PRIME(KOR) : D7E EAE3(Tier3)EC290B PRIME : D7E
EAE2(Tier2)
No IEGR function in Tier2 engine
Type: 4 cycle, Diesel, Turbo charged, Air to Air After
cooledNo.of cylinder : 6 vertical in line typeBore X Stroke: 108mm
X 130mm
Max. Power(fan not in operation) EC240B PRIME
:138kW(188PS)@2000rpmEC290B PRIME :153kW(208PS)@1800rpm
Max. Torque(fan not in operation) EC240B PRIME
:870Nm@1350rpmEC290B PRIME :965Nm@1350rpm
Governor type: EMS2Displacement: 7146cc
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Main components
1.The most advanced Volvo engine controller, EMS2, will be
utilized to provide the highest level of electronic features and to
enhance reliability.
2.The IEGR creates a small second exhaust valve lift. This extra
lift feeds exhaust gas back into the cylinder during the inlet
stroke to reduce NOx.
3. Common RailWhereas in conventional diesel engines injection
pressure is generated for each injector individually, a common rail
engine stores the fuel under high pressure in a central container
(common rail) and delivers it to the individual injectors on
demand. Benefits of common rail injection are reduced noise levels,
stronger performance, improved emission control and greater
efficiency.
4.The new high-pressure solenoid diesel fuel injector.
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External view(1)
1. Cam speed sensor2. Coolant temp. sensor3. IEGR solenoid4.
Boost press. & temp. sensor5. Waste gate actuator6. Preheater
unit7. Injector8. Rail pressure sensor9. Engine oil pressure
sensor10. Fuel control unit11. Fuel feed pressure sensor12. PTO13.
Blowby gas control valve14. Rail unit15. Alternator16. Oil
cooler
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External view(2)
1. Fuel feed pump2. Water pump3. Crank speed sensor4. Water in
fuel sensor5. Engine oil level & temp. sensor6. Ambient air
temp. & press. sensor7. Coolant level sensor8. Starter
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Electric circuit(EMS2)
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Wire harness drawing
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Valve lash adjustment(1)Allow the engine to cool down for at
least 30 minutes before setting the valve clearance.Engine oil
temperature should be lower than 80 C.The clearance of the IEGR
side must be set after setting other valves clearance.Before
adjusting the valve clearance, remove the IEGR unit
first.(a)Install the crankshaft rotating tool.(b)Make No.1 cylinder
to be overlapped.(c)Adjust the valve marked black as shown in the
next page.(d)Rotate crankshaft 360 degree.(e)Adjust the valve
marked black as shown in the next page.
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Valve lash adjustment(2)
-Install the protractor disk.-Turn the adjusting screw clockwise
till making contact with valve-Turn the adjusting screw
counter-colockwise up to the descripted angle.(f) Inlet: 90
degree(g)Exhaust: 150 degree.-Tighten the lock nut(1).
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Valve lash adjustment(3)
After adjusting inlet and exhaust, reassemble the IEGR unit.
When reassembling, replace the o-ring on the connection pipe
between two IEGR valve blocks. Now the No.6 piston is in overlapped
condition.(a)Adjust IEGR piston on the cylinder 1, 3 and 5
first.(b)Turn the crank shaft 360 degree.(c)Adjust the cylinder 2,
4, 6 accordint to following procedure.-Install the clearance
adjusting disk.-Turn the adjusting screw(2) of the slave piston
clockwise till making contact with exhaust valve.-Turn the
adjusting screw counter-colockwise up to 144 degree.- Tighten the
lock nut(1).
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Electric systemEC210B/240B/290B Prime
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Key & Main fuse
- SW3301: Key switch- 4-Slow blow fuse(140A, 80A, 30A, 30A)-
RE3101: Battery relay- RE2501: Preheater relay
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Alternator
B+ : Connection to BatteryB- : GroundDFM : NoneBS : Output
check15 : IgnitionL : Charge warning Lamp controlW : None
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Electric Box
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Fuse box
-Fuse1~Fuse30
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Electronic control system schematic
For easy undersatading, if you click the line, the color will be
changed.
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Switch(Control lockout, Emergency, Auto/Manual)
1. Control lockout switch2. Emergency switch3. Auto/Manual
switch
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RPM Control SW
Input voltage is 24v and output voltage is 0.5~4.5V.They have a
shield ground to prevent noise at signal line.
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Sensors(VECU)
1. Pilot pressure switch-SE9111: Attachment-SE9140: Travel
-SE9112: X1 -SE9140: Boom float
2. Fuel level sender
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Joystick 1 & 3 button
1. Semi-long joystick- RH: Hammer or Power boost- LH: Horn
2. 3-button joystick-RH5 : Boost6 : Shear7 : Hammer / Shear
-LH5 : Horn6 : Rotator7 : Rotator
3. 3-button joystick(Boom floating)-RH5: Boom Floating6:
Option7: Hammer/Boost-LH5 : Horn6 : Rotator7 : Rotator
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PWM Valve for P1, P2 & X1 Flow control
Rated current : 700 mACoil resisatnace: 17.5 ohms at 20 Celcius
degree
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VECU
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VECU input & output
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Engine speed and work mode control
**Comparing B-Series, Engine rpm and pump input power of H and G
mode are increased(Working mode refining).
In control system, we can have 10-step engine speed and 5
work-modes.By rotating engine speed control switch, Engine rpm and
work-mode is set at the same time. You can see the specification at
the next page.
This function allows the operator to select the engine speed and
work mode according to working condition and to optimise the
machine performance and fuel efficiency.
Principle is simple. Excavator converts the mechanical power
from engine to hydraulic power using hydraulic pump. So engine
power should be bigger than pump consuming power. If not, engine
could be stall or stop.
The V-ECU always receives the current engine speed from the
E-ECU . It balances engine horsepower and pump consuming power by
changing output current to power-shift valve.(ESSPC: Engine Speed
Sensing Pump Control)
Power-shift valve is kind of proportional valve using PWM
signal. By controlling power-shift valve, we can change the swash
plate angle and finally change pump flow rate. So system can keep
pump torque maintain lower than engine torque at the selected
engine speed.
(1) In I (Idle)& F (Fine) mode, current is fixed at
specified value regardless of engine load condition. That means
engine output is bigger enough compared to pump input power.
In P (Power max.), H (Heavy duty), G (General) mode,
(2) If engine is not loaded, it uses the specified current value
at each engine speed.(3) When engine is loaded, VECU increase the
current of power-shift valve to decrease the consuming power of
pump.
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Engine speed and work mode control(Without P)
**Comparing B-Series, Engine rpm and pump input power of G mode
are increased(Working mode refining).
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Automatic Return to Idle
When operator turns on the function auto-idle & does not use
any joystick & pedal, engine speed automatically goes down to
I1 mode. This increase fuel economy and decrease noise. After
engine has decelerated, if the operator changes one of input
signals, then engine speed return to the previous speed.
Default time delay is 5 second. This can be adjusted form 3 to
10 seconds by VCADS Pro.
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Boost control
When the boost solenoid is activated, the limit of system
pressure will be increased by 10%.
1. Travel only case
2. F-mode(Slow but strong)
3. One touch power boost for 1-button joystick- RH joystick
button=ON
4. One touch power boost for 3-button joystick- Lower
button=ON
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Conflux cutoff
1. F-mode (slow but strong)- EC210B/240B Prime : Boom-up, Arm-In
and Arm-Out use only 1-pump flow.- EC290B Prime: Boom-up, Arm-In
and Arm-Out use only 1-pump flow.
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Safe start & Stop
1. Safe start- Key off --> ON- Engine is stop
condition(rpm=0)- VECU request I2 to EECU & energize battery
relay(RE3101)**Whenever start the engine, default mode will be I2
regardless of initial position of rpm control switch to prevent
sudden engine rpm surge.
2. Releasing of Safe-start- Position change on rpm control
switch- Any attach movement- X3 operation(Safty lever up and LH
joystick switch)
3. Safe stop- Key ON --> OFF- VECU send stop command to EECU-
EECU supply max. current to FCU to stop the fuel supply- EECU Check
rpm to recognize whether engine is stop or not.- If engine stop,
EECU transfer the operating data.- EECU send message to VECU that
VECU can cutoff power supply to EECU.- VECU deenergize the battery
relay(RE3101)
** Too much quick stop & start again without data saving
time can cause serious damage to the computer.
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Emergency control
1. Emergency low- Auto/Manual SW is in AUTO.- IVS(Idle
Validation SW) is off- Communication error between VECU & EECU-
Engine speed fix in emergency low(I2)- VECU supply I2 mode control
current
2. Emergency high- Auto/Manual SW is in AUTO.- IVS(Idle
Validation SW) is ON- Communication error between VECU & EECU-
Engine speed fix in emergency high(H)- VECU supply emergency
current
3. Emergency stop- IVS(Idle Validation SW) is in STOP position.-
EECU lose electric power.- Engine stop.
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VECU in Manual
SW9103 is in Manual position.
IECU- VECU status signal is off.- Auto position signal is off .-
IECU recognize current situation with combination of above two
signals.- IECU do not produce corresponding error code.
EECU- EECU goes to emergency mode because of no communication
within VECU.
Pump control- By using the resistance on the Elec. BOX, Power
shift valve use constant current.
Travel speed in manual mode- In manual mode, can change speed of
travel.
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Starter lock(EC210B/EC240B/290B Prime)
1. Starter lock relay- Key OFF --> ON- Safety lever=Down- If
there is code-lock option, PIN conde shoud be matched.- When key is
in start position, RE3301 will be ON.
From now on, power can goes to the magnet of
starter(MO3301).
2. Magnet on the starter will be off by EECU,- When Engine is
running.(RPM > 650)- During 6 seconds after EECU checked engine
running.(to prevent overunning of starter)- During 2 seconds after
EECU checked engine stop.(Confrimation of engine stop after
starting failure)- During 1 seconds after key position changed from
START --> ON. ( To prevent an quick retry after starting
failure)
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Travel speed & Travel alarm
1. High speed & Automatic down-shift- Working mode is not in
F-mode- Travel pilot pressure signal=ON- Speed selection SW=ON-
When above conditions are ok, MA4212 will be activated.
2. Travel alarm- Travel alarm mute SW=OFF- Travel pilot pressure
signal=ON- When above conditions are ok, RE4201 will be
activated.
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P-mode parameter
In the old version, Dataset2 was different according to the
region machine used.From this machine, VECU will have only 1
Dataset2 which has two specification. VECU can select one of the
specification according to the parameter setting.
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Quick fit and rotator circuit
These two systems can be activated after lifting up the safety
lever. Lifting safety lever activate RE9106.
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X1 (1-switch + Pedal)
PAR(BFJ: X1 Flow contriol)=ON
** Before turn on above parameter, PWM9109 shoud be
installed.
- X1 flow rate setting on IECU- Control lock-out lever up,
RE9106=ON
1. 1-Switch only1-way (Hammer selection)- When joystick-
button=ON, MA9103=ON.This option only can use hammer.MA9117 &
MA9118 are not installed.
2. 1-Switch+Pedal1-way (Hammer selection)- When joystick-
button=ON, MA9103=ON.-X1 Pedal forward
2-way(Shear selection)- X1 Pedal forward- X1 Peal rewardJoystick
button can not be used for Shear
- X1 Conflux- When SW9112=ON, MA9116=ON.
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X1 (2-switch only)
PAR(BFJ: X1 Flow contriol)=ON
** Before turn on above parameter, PWM9109 shoud be
installed.
- X1 flow rate setting on IECU- Control lock-out lever up,
RE9106=ON
- If 1-way (Hammer selection)- When joystick- upper RH
button=ON, MA9103=ON.- When joystick- upper LH button=ON,
MA9104=OFF.
- If 2-way (Shear selection)- When joystick- upper RH button=ON,
MA9103=ON.- When joystick- upper LH button=ON, MA9104=ON.
- X1 Conflux- When SW9112=ON, MA9116=ON.
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I ECU
1) LayoutA : Central warning lampB : Coolant temp. & fuel
GaugeC : Warning indicatorD : MCD(Message Center Display)E : Key
button
2) Key OFF condition
3) Key ON (Booting operation)Central warning lamp(2 times),
gauge(all segment ON),all indicator lamp ON
4) Key OFF (Shutdown operation)
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I ECU Electric Circuit
IA6: operating power.IA5: power for an internal clock.
VECU VB16 terminal inform the position of auto/manual switch.VA
34 terminal receives V-ECU status signal if V-ECU is normal.
IA1 ~ IA10 are the pin number of connector
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MCD Operation
(1) : Normal condition(2) : Anti-theft(Code-lock) condition(3) :
X1 condition(4) : Error display
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Indicator Operation and Code Lock Test
(a) : Put 4-digit number!(This PIN code will be saved in the
IECU)(b) : Enter the PIN code through IECU(arrow & confirm
buttons).(c) : Push the confirm button more than 2 sec.
(d) : If the correct code is entered,Indicator Operation menu is
displayed.
(e) : Alarm sound can be off by pushing confirm button.
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Pop-up indicator
This is not a warning but just indication of activation.
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X1 flow setting
You can select any number from 30 to 500 at flow setting
screen.But if you select number that is larger than actual maximum
flow, the set value will not be changed as you select.
For example, if you select 240 at EC210B, the set value will be
changed to 200.
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Wiper
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Radio & DC-DC converter
DC-DC Converter
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Care Track(Telematics)
The VCE telematics solution will contain three main services;
Mapping and Tracking, OperationalManagement, and Service
Management. Within Mapping and Tracking services such as mapping
ofmachines, geo fence and location report will be included.
Operational Management will containperformance and utilization
reports. Under Service Management service for the different
machinescan be planned and followed up. Different alarms and error
codes will be handled under servicemanagement.
Service- Machine position- Instantaneous Machine data-
Geographical fence- Location report- Sanil Trail- Machine
Utilization Report- Event Report- Performance/Productivity Report-
Immobilizer- Alarms & Warnings- Error Codes- Service Report-
Logged Machine Data, Complete Download- Logged Machine Data,
Partial Download- Sleep Mode- Work Shift- Over the Air
Programming
Picture text: 1. Satellite modem2. ECU_Wireless for GSM/GPS3.
Antenna connection point for satellite modem4. Antenna connection
point for GSM/GPS
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China GPS OverviewThis option is only used in China.
-GPS ECU sends the status of GPS to V-ECU via DI-Low
channel.-V-ECU can send "Shutdown request message" to E-ECU via CAN
BUS according to GPS ECU status.-I-ECU can send "Shutdown request
message" to E-ECU via CAN BUS during manual mode.
Function- Machine position on real time through GPS based
signals- Anti tempering system (Machine will stop if GPS is
removed)- Machine immobilization (Next engine starting is
impossible)- Machine immobilization (If there is no GSM or GPS
signal)- Machine hour meter information.- MATRIS information is not
available through the China GPS.
Installation- GPS-ECU unit, Antenna and cable installation by
Dealer(CHW products).- GPS-ECU unit, Antenna and cable installation
in factory(Shanghai products).- China GPS Parameter(MXD) must be
turned on by VCAD-pro.- Anti-theft protection(ABP) must be turned
off by VCAD-pro.
GPS-ECU modesGPS-ECU status can be send to the web vis GSM
antenna when the machine is in the following modes.
- Normal mode: Start key is in On position or machine running
condition. Uploading time of GPS-ECU status: 1/20min.- Power save
mode: Start key is OFF position and the battery is connected.
Uploading time: 1/8hours.- Power off alarm mode: Battery
disconnected condition. GPS-ECU is operated by onboard battery
continuously for 2 weeks. Uploading time: 1/8hours.- Extra power
saving mode: The GPS-ECU keeps the status without uploading for 4
months when the GPS-ECU onboard battery is dead.
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China GPS
Shut down request from V-ECU-Power line cut: 60 (Duty ratio
output by GPS-ECU)-GSM cable cut or GPS cable cut: 70-Open ECU
cover: 80-Stop request from web: 90-GPS ECU failure: 100-GPS ECU
theft: 0
Engine running condition-Normal condition: 40 (Duty ratio output
by GPS-ECU)-ECU normal but no GPS signal: 20 (Machine can be moved
in tunnel)-ECU normal but no GSM signal: 30 (Machine can be moved
in tunnel)-Reserved: 50
Applied machine Serial no.;-SHI ProductsEC210B Prime:
35109~EC240B Prime: 31175~EC290B Prime: 35001~EC360B: 35279~
-CHW ProductsEC210B Prime: 70417~EC240B: 14147~EC290B Prime:
17043~EC330B: 15013~EC360B: 15098~EC460B: 14342~EC700B:
10539~EW145B: 15540~
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ECU communication failure
From B Prime-series, Communication failure detection code is
advanced using PSID. Using this code, we can see which side has
fault.
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Power transmission
- Swing motor- Travel motor- Turning joint- Swing Ring gear
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Swing Motor(EC210B PRIME)
Motor- Displacement : 121.6 cc/rev (7.4 cu.in/rev)- Relief
pressure : 285 kgf/cm^2 (27.9 MPa / 4,053 psi)- Time delay : 5 +3
sec.
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External view
Compare the circuit & port on the motor.
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Sectional view
Rotary group consists of cylinder block and 9 piston assemblies
located in the cylinder. Both ends of cylinder block are supported
by bearings. Piston assemblies are guided by return plate and
spring so they slide smoothly on the swash plate. Valve plate is
pressed against the cylinder block surface by the mechanical
pressure of spring and hydraulic pressure working on the
bushing.Between the outer diameter of the cylinder block and
housing a mechanical brake for parking is mounted.The cover section
has a relief valve for cushioning and an anti-cavitation valve to
prevent cavitation and rebound damping valve for smooth
stoping.
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Swing motor sectional view(2)Gear box reduce the speed and
increase torque using planetary gear.Gear ratio: 20.01
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Relief valve operation
Most of brake force comes from this relief valve when we stop
slewing.Therefore we need smooth build-up of pressure for smooth
braking.
(1) Closing position(2) Low pressure relief(3) Relief pressure
increase by moving of piston(4) Final stage of relief
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Rebound damping valve operation
(1) Neutral position
(2) Start of swing
(3) full swing
(4) Joystick return to the neutral. PA pressure goes high.
(5) PA will reach to relief valve set pressure and machine will
stop.In this point, PA=Relief set pressure and PB=Tank
pressure.There is pressure difference between PA & PB. That
means rebound of machine.
(6) When machine starts rebound, PA pressure drops down.If PA is
lower than the spring force of damping valve, those two valves
starts to return to original position. But return speed is
different because of small hole of front valve. This speed
difference make gap between two valves. This gap connects A & B
ports. As result, PA & PB will be same for short time. That
means there is no force to rotate motor again.Finally, this valve
can stop the machine at the early stage of first rebounding.During
normal slewing, the port A & B must be disconnected at any
case.
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Parking brake operation
The slew brake is spring applied and hydraulically released.
Friction plates are splined to cylinder block and rotate with
cylinder block. Mating plates are splined to motor casing.
1. When there is no SH signal, parking brake will be engaged by
spring force.
2. When there is SH signal, primary pilot pressure(40 bar / 580
psi) goes to brake piston through PG and push the brake piston
against spring.
3. When there is no SH signal, Pilot pressure can not go to the
brake chamber and oil in side of that chamber shoud be drained. But
there is only small hole for drain near to time delay valve. In the
beginning, oil pass through the orifice and go to tank, but
pressure will be built up in front of the orifice and push the
valve. Now the valve blocks tank line. There is no flow to tank.
That means there is no pressure difference between front and rear
side of valve. But the valve has return-spring at the rear side. So
the valve can return to initial position and open tank passage
again. The oil from brake chamber can go to tank again.
Open-close-open movement can delay the parking brake engaging
time for 5 seconds.
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Travel Motor(EC210B PRIME)
- Travel motors- Gear box
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External view
*Circuit animation for travel motor
- Model name : EM140V- Displacement(cc/rev): 82.4/140.5- Relief
pressure: 350 kgf/cm^2- Speed changeover pressur: 260Kgf/cm^2
Gear box- Gear ratio: 50.5
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Sectional view
When you click the component on the circuit diagram, you can see
the location of correspondent component.
1. Load check valve2. Counter-balance valve or Brake valve3.
Relief valve4. Orifice5. Speed changeover valve6. Swash piston7.
Parking brake8. Orifice
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Travel motor Sectional view(2)
Travel motor gear box sectional view.
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Brake valve operation
1. Brake valve is now at neutral position.
2. The pressure of supply line goes high and this pressure
applies to the backside of brake valve and then pushes the brake
valve against spring. So return side oil can go to tank.
3. When machine travels at the down slope, this can cause
overrun. That means the amount oil of supply line is less than
expected. In this case we need brake function to control the
machine from over-speed.
The pressure of supply line becomes low and the brake valve
return to the neutral position. So we can block the return line and
slow down the machine speed. During this period, the relief valve
help machine to be driven smoothly.(Low and high pressure
relief)
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Speed changeover
1. When the pilot pressure at port P is disconnected, the spool
moves upward by the spring force & hydraulic force which is
applied to the differential area between red section and yellow
section. The oil in chamber of swash piston flows to the drain
line, and the swash plate moves to increase swash angle, so the
motor rotates at low speed.
2. When the pilot pressure at port P is connected, spool moves
downward by the pressure at Pi. The supply oil through check ball
folws to the swash piston. Swash pisto pushs the swash plate and
decrease swash angle, so the motor rotates at high speed.
3. In this picture, the force by P port pressure acts against
the force by supply pressure which is applied on the differential
area and spring. When the supply pressure reach to specified value,
the force by supply pressure and spring overcomes the force by Pi
pressure. So the spool moves upward. The oil in chamber of swash
piston flows to the drain line, and the swash plate moves to
increase swash angle, so the motor rotates at low speed and high
torque.
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Power transmission(EC240B/EC290B PRIME)
- Swing motor- Travel motor- Turning joint- Swing Ring gear
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Swing System
- Swing motor- Gear box- Pinion- Turning joint- Swing Ring
gear
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External view
**Compare the circuit & port on the motor.
- Displacement(EC240B PRIME) : 148.5cc/rev- Displacement(EC290B
PRIME) : 169.4cc/rev- Relief pressure : 270 kgf/cm^2(26.4
MPa)(3840psi)- Time delay : 5+3 sec.
Gearbox- Gear ratio : 24.487- Oil : SAE NO. 90 (6.1 liter)
A,B : MainM : Anti-cavitationDr : Case drainPG : Brake
releasingSH : Brake pilotPA,PB: Pressure checkingGI,L : Gear oil
filling & Oil level checkingGO : Gear oil outlet
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Sectional view(1)
Rotary group consists of cylinder block and 9 piston assemblies
located in the cylinder. Both ends of cylinder block are supported
by bearings. Piston assemblies are guided by return plate and
spring so they slide smoothly on the swash plate. Valve plate is
pressed against the cylinder block surface by the mechanical
pressure of spring and hydraulic pressure working on the
bushing.Between the outer diameter of the cylinder block and
housing a mechanical brake for parking is mounted.The cover section
has a relief valve for cushioning and an anti-cavitation valve to
prevent cavitation and rebound damping valve for smooth
stoping.
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Sectional view(2)
Gear box reduce the speed and increase torque using planetary
gear.
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Parking brake operation
The slew brake is spring applied and hydraulically released.
Friction plates are splined to cylinder block and rotate with
cylinder block. Mating plates are splined to motor casing.
1. When there is no SH signal, parking brake will be engaged by
spring force.
2. When there is SH signal, primary pilot pressure(40bar) goes
to brake piston through PG and push the brake piston against
spring.
3. When there is no SH signal, Pilot pressure can not go to the
brake chamber and oil in side of that chamber shoud be drained. But
there is only small hole for drain near to time delay valve. In the
beginning, oil pass through the orifice and go to tank, but
pressure will be built up in front of the orifice and push the
valve. Now the valve blocks tank line. There is no flow to tank.
That means there is no pressure difference between front and rear
side of valve. But the valve has return-spring at the rear side. So
the valve can return to initial position and open tank passage
again. The oil from brake chamber can go to tank again.
Open-close-open movement can delay the parking brake engaging
time for 5 seconds.
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Travel System(EC240B PRIME)
- Travel motors- Gear box
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External view
*Circuit animation for travel motor
- Model name : EM140V- Displacement(cc/rev): 82.4/140.5
- Relief pressure: 350 kgf/cm^2- Speed changeover pressur:
260Kgf/cm^2
Gear box- Gear ratio: 59.05
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Sectional view(1)
When you click the component on the circuit diagram, you can see
the location of correspondent component.
1. Load check valve2. Counter-balance valve or Brake valve3.
Relief valve4. Orifice5. Speed changeover valve6. Swash piston7.
Parking brake8. Orifice
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Sectional view(2)
Gear box reduce the speed and increase torque using planetary
gear.
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Travel system(EC290B Prime)
- Travel motors- Gear box
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External view
*Circuit animation for travel motor
Travel motors - Displacement: 104.6/166.3 cc/rev- Relief
pressure: 370 kgf/cm^2 (36.3 MPa)- Speed changeover pressure:
265Kgf/cm^2(26.0 MPa)- Brake release pressure: 8
kgf/cm^2(0.83MPa)
Gear box - Gear ratio: 59.889- Oil : SAE#90 Gear oil(6.2
liter)
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Sectional view(1)
1. Pressure reducing valve for parking brake2. Counter-balance
valve or Brake valve3. Relief valve4. High speed set screw5. Speed
changeover valve6. Swash piston7. Parking brake
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Sectional view(2)
Gear box reduce the speed and increase torque using planetary
gear.
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Reducing valve operation
In order to release parking brake, system uses the pressure from
main pressure of supply line. So we need to decrease the pressure
by using this valve.
(1) Supply pressure goes to brake chamber to release the
brake.
(2) If the pressure of brake chamber exceed the specified
value(spring tension), main pressure push the valve to the right
becasue of area difference of valve and disconnect passage between
main pressure and brake chamber. Therefore the parking pressure
cannot exceed the setting pressure.
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Brake valve operation
1. Brake valve is now at neutral position.
2. The pressure of supply line goes high and this pressure
applies to the backside of brake valve and then pushes the brake
valve against spring. So return side oil can go to tank.
3. When machine travels at the down slope, this can cause
overrun. That means the amount oil of supply line is less than
expected. In this case we need brake function to control the
machine from over-speed.
The pressure of supply line becomes low and the brake valve
return to the neutral position. So we can block the return line and
slow down the machine speed. During this period, the orifice on the
brake valve help machine to be driven smoothly.
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Speed changeover
1. When the pilot pressure at port Pi is disconnected, the spool
moves upward by the spring force & hydraulic force which is
applied to the differential area between red section and yellow
section. The oil in chamber of swash piston flows to the drain
line, and the swash plate moves to increase swash angle, so the
motor rotates at low speed.
2. When the pilot pressure at port Pi is connected, spool moves
downward by the pressure at Pi. The supply oil through check ball
folws to the swash piston. Swash pisto pushs the swash plate and
decrease swash angle, so the motor rotates at high speed.
3. In this picture, the force by Pi port pressure acts against
the force by supply pressure which is applied on the differential
area and spring. When the supply pressure reach to specified value,
the force by supply pressure and spring overcomes the force by Pi
pressure. So the spool moves upward. The oil in chamber of swash
piston flows to the drain line, and the swash plate moves to
increase swash angle, so the motor rotates at low speed and high
torque.
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Brake system
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Steering system
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Frame & Track Unit
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Upper frame
1. Center frame2. Cabin mouting position3. Engine mounting
position4. Swing motor mounting position5. Turning joint mounting
position6. Counterweight mounting position
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Lower frame
1. Lower frame2. Idler & Track tensionerThere is high
pressure grease in track adjuster cylinder. Do not remove grease
fitting or nut and valve assembly to release grease.To decrease
track sag, add multi-purpose grease to track adjuster cylinder
through grease nipple(A) using a grease gun with a maximum capacity
690 bar (10000 psi). To increase track sag, loosen valve assembly
(B) one turn so that grease in the track adjuster cylinder can be
drained through rod hole (C). Tighten the valve assembly when track
sag is correct.
3. Lower roller(ISO VG 220, EP Oil)4. Roller guard(Standard)5.
Roller guard(Heavy duty)6. Swing supporter area7. Track drive &
Sprocket8. Upper roller(ISO VG 220, EP Oil)
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Track Link
1. Link LH2. Link RH3. PIN-Regular4. PIN-Master5.
Bushing-Regular6. Bushing-Master7. Seal8. Spacer9. Greasing area10.
Greasing area11. Do not apply grease here.
**EP2 Grease
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Boom & Arm
1. Boom-Rear Bearing2. Boom-Center Bearing3. Arm Cylinder
Lug(Boom side)4. Boom-Front Lug5. Stiffener6. Arm Cylinder Lug(Arm
side)7. Boom-Arm Bearing8. Bucket Cylinder Lug9. Yoke Bearing10.
Arm front Bearing
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Air conditioning system
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Air conditioning system overview
- Heating and cooling system is installed in a single unit.- Can
select indoor or outdoor air.- Mix door controls target temperature
of system by mixing cold and hot air.- There are two filters.
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Air conditioning system layout
1. Aircon unit2. Receiver drier3. Condensor4. Compressor5.
Coolant connection on Engine6. Controller & Heating unit for
diesel heater(Option)7. Fuel pump for Diesel heater8. Diesel heater
timer
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Air conditioning system input & output
When you equipped with Auto air conditioning system, you can
operate system in auto-mode or manual-mode.
By pushing AUTO switch, system can be operated automatically.
The only thing what operator has to do is setting the target
temperature.
In auto-mode when other switches except temperature setting and
trouble checking switch is operated, the control system is changed
to the manual-mode.
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Aircon system electric circuit
By clicking the line, you can change the color of the line.
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System status indication
The status display has two modes. (Operator s mode and Service
mode)
In operator s mode, you can check only target temperature,
ambient temperature and error code.
In service mode , you can check all of items.
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Error code
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Manual mode control
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Air conditioning switch animation
Press button step by step.
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Controller- Auto and Manual(Option)
(1) Auto controller(2) Manual controller
Manual type controller is an option for tropical area.It has
only cooling unit. There is no heating unit so there is also no
mix-door actuator and coolant temperature sensor.And for this
option, there is no in-car & ambient temperature sensor
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Air conditioner unit
1. Actuator - RH foot2. Connection point - Refrigerant3.
Actuator - LH foot4. Connection point - Coolant5. Actuator - Mix
door6. Actuator - Face door7. Filter - Main8. Blower fan9. Heater
core10. Evaporator11. Duct temp. sensor12. Expansion valve13.
Filter - Ambient
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Sensors
Duct temperature sensor is installed at the core of
evaporator.If sensor is failed, compressor clutch will be
disabled.
1. Duct temperature sensor2. In-car temperature sensor3. Ambient
temperature sensor4. Coolant temperature sensor
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Actuator
1. Mix door actuator(MO8707)- Inside of mix-door actuator, there
is a position sensor. This informs the real-position to controller
for precise positioning.(Feedback control)
2. Foot, Face door acutator(MO8704-6)- Opeating angle= 90
degree
3. Intake door acutator(MO8703)- Operating angle= 120 degree
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Resistor and relays
The resistor and 4 relays are used for controlling blower speed.
And 1 relay is used for compressor clutch control.
Inside of resistor, there is two lead fuses. If there is problem
with this resistor, we can use only maximum fan speed.
1. Relay2. Resistor
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Compressor
Refrigerant : R-134aDisplacement : 154.9 cc/revOil : SP-10 or
equivalentOil charge : 240cc
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Expansion valve
This is a kind of feedback system.From output temperature from
evaporator, System decides the amount of refrigerant.
Output temp. high ---> More flowOutput temp. low ---> Less
flow
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Receive dryer
Receive dryer - Is a kind of reservoir to store excess liquid
refrigerant in the system.- Is a strainer or filter to remove
particles from the system.- Has desiccant to absorb moisture from
the refrigerant.- Has a built in pressure switch to protect system
from excessive high or low pressure.
1. Desiccant2. Filter3. Baffle plate4. Inner tube5. Outlet
port6. Inlet port7. Pressure switch- Low pressure OFF : 2.0 +/- 0.2
kgf/cm^2- High pressure OFF : 32 +/- 2 kgf/cm^2
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Diesel heater components
1. TimerThe timer controls the diesel heater, and displays the
operating status. The display shows current date, current time and
operating time.
2. Controller & Heating unitThe heating unit raises the
temperature of the coolant using the fuel combustion unit, consists
of the glow plug, the thermostats, the flame sensor, the
controller, the electric motor and the fuse. The case of the unit
has the fuel supplying port, the coolant inlet/outlet port, the air
inlet port and the exhaust port.
3. Fuel pumpThe fuel pump supplies the diesel heater with the
fuel from the tank.
4. Water pumpThe water pump is located between the diesel heater
and the engine block, and supplies the diesel heater with the
coolant from the engine block.
a: Water flowb: Fuelc: Fresh aird: Exhaust gas
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Hydraulic System(EC210B PRIME)
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Hydraulic system overview
The mechanical power from engine converted to hydraulic
power.that are variable displacement piston pump.And it has 2 fixed
gear pumps. it is for servo system and X3.
Two-Pump flow- Boom-Up- Arm-IN & Out- X1(Option)
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Hyd. circuit(Full option)
Basic machineTravel: Straight travel functionBoom-up: 2-pump
flowBoom-down: RegenerationBoom: Holding functionBoom:
PriorityArm-in & out: 2-pump flowArm: Holding functionArm-in:
RegenerationOption: 2-pump flow (selectable)Swing: priority against
arm
Option- X1- X3- Quick fit
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Hyd. circuit(Basic Machine)
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Brief circuit-1
Brief circuit for main line.
How to read this circuit diagram.In the circuit diagram, every
component has unique number and there are many parentheses.For
example FR(1-Pi2), This means that the port FR is connected to the
port Pi2 of the component 1. This is the way how to read our
circuit diagram.
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Brief circuit-2
Brief circuit for pilot system
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Circuit animation
This animation can be used when you explain or study the
hydraulic circuit. By pressing the lines, character or spool with
mouse, you can change the colour of lines and spool position.
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Hydraulic Pump
Piston pump- Model : K3V112DT-1XJR-9N2D-V- Displacement(cc/rev)
: 114 X 2- Max. flow rate @ 1800rpm (LPM) : 200 X 2
Gear pump- Model : ZX10LGRZ1-07A-V- Displacement(cc/rev) : 10-
Max. flow rate @ 1800rpm (LPM) : 18
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External veiw
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Sectional view
This pump assembly consists of two pumps connected by spline
coupling.The suction and delivery ports are integrated at the
connecting section of the two pumps: The common suction port serves
both the front and rear pumps.The pump consists of rotary group,
swash plate group and valve block group.
The rotary group consists of front drive shaft, cylinder block,
piston and shoe, set plate, spherical bushing, and cylinder spring.
The drive shaft is supported by bearings. The shoe is caulked to
the piston to form a spherical coupling. It has a pocket to relieve
thrust force generated by loading pressures and create a hydraulic
balance so that it slides lightly over shoe plate. The sub group
composed of a piston and a shoe is pressed against the shoe plate
by the action of the cylinder spring through the set plate and
spherical bushing. Similarly, the cylinder block is pressed against
valve plate by the action of the cylinder spring.
The swash plate group consists of swash plate, shoe plate, swash
plate support, tilting bushing, tilting pin and servo piston.The
servo piston moves to the right and the left as hydraulic oil
controlled by the regulator flows to a hydraulic chamber located on
both sides of the servo piston. The force exerted on the tilting
pin by the servo piston causes the swash plate to slide on support
to change the tilting angle.
The valve block group consists of valve block, valve plate and
valve plate pin. The valve plate which has two crescent ports is
attached to the valve block to feed oil to and collect oil from the
cylinder block. The oil discharged via the valve plate is routed to
an external pipe line by way of the valve block.
Section A-A: Horsepower & Power shift control sectionSection
B-B: Negative control section
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Pump circuit Animation
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Regulator animation
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P-Q curve
Test condition- P1=P2
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Gear pump(EC210B/EC240B/EC290B PRIME)
(1) Gear pump on the main
pump----------------------------------------------EC210B/EC290B
Prime- Displacement(cc/rev) : 10- Max. flow rate @ 1800rpm (LPM) :
18----------------------------------------------EC240B Prime-
Displacement(cc/rev) : 10- Max. flow rate @ 2000rpm (LPM) :
20----------------------------------------------
(2) Gear pump on PTO for X3EC210B Prime : G200EC240B Prime :
G200EC290B Prime : G200
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Main Control Valve
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MCV Animation
Push the component in the circuit diagram with mouse then you
can see the location of that components and other information.
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Flow sensing valve operation
The function of flow sensing valve is to control the amount of
flow from pump according to the joystick stroke.
1. Neutral condition( Central passage fully open -> High Pi
-> Minimum flow) 2. Half stroke( Central passage partially open
-> Medium Pi -> Medium flow)3. Full stroke( Central passage
fully close -> the lowest Pi -> Maximum flow)
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Main relief valve operation
The function of main relief valve is limit the maximum system
pressure.
Ph-OFF1. Pump pressure is lower than the set-pressure.(close) 2.
Pump pressure is reached to the set-pressure.(pilot poppet open)3.
Main poppet open and pump line has tank-connection.4. Pressure drop
down.(pilot poppet close)5. Main poppet close.
Ph-ON1. Boost signal comes from port Ph and push the piston to
increase the tension of spring.
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Main relief valve adjusting
High pressure adjusting- 350Kgf/cm^2(4980 psi)1.Loosen lock
nut2.Turn adjusting screw clockwise until fully seated (Y and
Z)3.Retighten lock nut4-1.Loosen lock nut4-2.To increase pressure,
turn clockwise.4-3.To decrease pressure, turn
counterclockwise.4-4.Hold adjusting screw securely and tighten lock
nut. Low pressure adjusting- 330Kgf/cm^26-1. Loosen lock nut6-2. To
increase pressure, turn clockwise.6-3. To decrease pressure, turn
counterclockwise.6-4. Hold adjusting screw securely and tighten
lock nut.
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Port relief valve operation
The function of port relief valve is to release the shock
pressure inside of actuator during neutral condition
Overload1. Cylinder pressure is lower than
set-pressure.(close)2. Cylinder pressure is reached to
set-pressure.(pilot poppet open)3. Small piston which is inside of
main poppet move to left and sit on the pilot poppet.4. Main poppet
open and makes tank-passage.5. Pilot poppet close.6. Main poppet
returns to original position.
Anti-cavitation(Make up)1. Cylinder pressure drop down to the
vacuum pressure.2. Main poppet will be opened by tank pressure and
fill up the cylinder chamber.
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2-stage port relief valve operation
(1) Neutral- When Hammer/Shear selection switch is off, relief
valve maintains high pressure setting.
(2) Hammer(1 way)- When Hammer selection switch is ON and X1
uses 1way, releif valve goes to low pressure setting due to pilot
pressure.
(3) Shear(2 way)- When shear selection switch is ON and X1 uses
2way, releif valve goes to high pressure setting due to pilot
pressure off.
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2-stage port relief valve adjusting
High pressure adjusting- 365Kgf/cm^21. Remove hose and block the
end of hose.2-1. Loosen lock nut2-2. Turn adjusting screw clockwise
until fully seated (Y and X)2-3. Retighten lock nut3-1. Loosen lock
nut3-2. To increase pressure, turn clockwise.3-3. To decrease
pressure, turn counterclockwise.4. Hold adjusting screw securely
and tighten lock nut.
Low pressure adjusting- 210Kgf/cm^26. Loosen lock nut and set x1
option properly7. To decrease pressure, turn counterclockwise.8. To
increase pressure, turn clockwise(1/4 rotation will change it by
about 58 bar).9. Hold adjusting screw securely and tighten lock
nut.
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Boom up operation
1. Neutral- Center passage open- Holding valve closed
2. Joystick signal on(BU)- Spool move to upword- Center passge
close & pressurize
3. Open load check
4. Holding valve open
5. Logic valve internal spool move
6. Logic valve open
7. Logic valve close when PL side pressure is lower than boom
side.eg. Boom up + Swing at light load
8. Logic valve close when Arm In(AI) signal is strong.
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Boom down operation
1. Neutral
2. Joystick signal(BD) ON- Spool move and close center passage
partially
3. Holding valve block the return line from cylinder
4. (BD) signal move the internal valve at the holding valve to
operate pilot check valve
5. Pilot check valve open and oil in the back side of the
holding valve can be released.
6. Holding valve open
7. Return oil go through the back pressure valve.
8. When supply pressure is low,internal check valve can be open
and make passage to the supply side.
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Arm-IN operation
1. Neutral- Holding condition
2. Joystick Arm-IN(AI) ON- Center passage block and pressurized-
The other pump side also pressurized due to center bypass valve
movement.
3. Load check open and return line blocked by holding valve.-
4pi pressure move valve and meke oil inside of holding valve
free.
4. Holding valve open and return line restricted by arm
regeneration valve when supplying pressure is low.- Internal check
open and return line is connecting to supply line.
5. When supplying pressure is high, arm regeneration valve make
wide hole for return line to reduce back pressure.
6. Swing priority- Port-Pa has pilot signal and make restriction
at the return side to supply more oil to swing side.
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Straight travel
1. All spools are in neutral condition.- 40 bar enters in
port-Pg1 which has two orifice.- oil from one orifice pass through
two travel spool and go to the return line.- Oil from the other
orifice pass through arm, option, swing, boom, bucket and go to the
return line.
2. Travel Right- Spool movement block the line from orifice and
bulid up pressure.- Travel pilot pressure switch ON
3. Travel Left
4. Both supply line for TR & TL is waiting in the front of
the straight travel spool but don't have connection with each
other.
5. Swing operation- Swing spool movement block the line from the
other orifice and build up pressure and this pressure moves the
straight travel valve. Now TR & TL is connected with each
other.
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Servo system layout
9. Accumulator block10. Accumulator11. Solenoid block12.
Solenoid block13. Pilot block17. Shuttle block-118. Shuttle
block-219. Pilot select valve for boom conflux
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Hydraulic oil cooling system
21. Return check 3k22. Return check 4.5k23. Hyd oil cooler24.
Hyd oil tank29. Tank breather
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Option hydraulics
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X1 circuit
X1 option is mainly used for hammer & shear.
Main line changeHammer(Single acting)- MCV --> Hammer, Hammer
--> Hyd. Tank.Shear(Double acting)- Both lines are connected to
tank.** Selection is made by Hammer & Shear select sol.(35) and
3-way valve(41).
2-stage port relief valve- Hammer (210 kgf/cm^2)- Shear(365
kgf/cm^2)**2-step port relief valve always maintains high pressure
except hammer use.
Flow control function- According to IECU setting, The amount of
flow can be adjusted by proportional valve(43).- 2-pump flow option
for X1(99)
Various RCV selection- X1 1way switch(a)- X1 2way switch(b) with
sloenoid(38)- X1 1way switch(c) with boom floating option- X1
pedal(d)
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X1 components
12. X1 1-switch control solenoid34. X1 pedal35. Hammer shear
select sol.38. X1 2-switch control solenoid99. X1 2-pump flow
solenoid37. Shuttle valve block39. Valve 2-pump flow40. Variable
orifice41. 3-way select valve42. Hammer return filter43. Flow
control PWM valve46. Connector with orifice47. Connector with check
valveX. X1 Pressure switch
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X3 Rotator
30. Additional gear pump at the engine PTO31. Check valve32.
rotator valve33. Valve block
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Quick fit
Locking condition- Pilot pressure is always ON at the large
chamber to make quick fit lolcked position.
Releasing condition- Pilot pressure enter the small chamber and
pilot check valve open. If the pressure is lower to release quick
fit, main pressure can go to small chamber to release quick
fit.
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U-Quick fit
X: Quick fit solenoid valveY: Quick fit cylinder
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Boom floating circuit
We need VCADS Pro to turn on the parameter.When pushing the boom
float position switch, solenoid valve(83) is ON. This is ready
condition to use float position.After then, if joystick is at boom
down position, both side of cylinder is connected to the tank. That
means boom is dropped down by gravity and boom cylinder can be
moved by external force freely.
For this option, Boom hose rupture valve is necessary.
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Hydraulic System(EC240B PRIME)
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Hydraulic system overview
The mechanical power from engine converted to hydraulic
power.Machine has two main pumps that are variable displacement
piston pump.And it has 2 fixed gear pumps. it is for servo system
and X3.
Two-Pump flow- Boom-Up- Arm-IN & Out- X1(Option)
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Hyd. circuit(Full option)
Basic machineTravel: straight travel functionBoom-up: 2-pump
flowBoom-down: RegenerationBoom: Holding functionBoom:
PriorityArm-in & out: 2-pump flowArm: Holding functionArm-in:
RegenerationOption: 2-pump flow (selectable)Swing: priority against
arm
Option- X1- X3- Quick fit
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Hyd. circuit(Basic Machine)
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Brief circuit-1
Brief circuit for main line.
How to read this circuit diagram.In the circuit diagram, every
component has unique number and there are many parentheses.For
example FR(1-Pi2), This means that the port FR is connected to the
port Pi2 of the component 1. This is the way how to read our
circuit diagram.
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Brief circuit-2
Brief circuit for pilot system
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Circuit animation
This animation can be used when you explain or study the
hydraulic circuit. By pressing the lines, character or spool with
mouse, you can change the colour of lines and spool position.
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Hydraulic Pump
Piston pump- Model : K3V112DT-1XDR-9N2A- Displacement(cc/rev) :
115 X 2- Max. flow rate @ 2000rpm (LPM) : 230 X 2
Gear pump- Model : ZX10LGRZ1-07A-V- Displacement(cc/rev) : 10-
Max. flow rate @ 2000rpm (LPM) : 20
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External veiw
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Sectional view
This pump assembly consists of two pumps connected by spline
coupling.The suction and delivery ports are integrated at the
connecting section of the two pumps: The common suction port serves
both the front and rear pumps.The pump consists of rotary group,
swash plate group and valve block group.
The rotary group consists of front drive shaft, cylinder block,
piston and shoe, set plate, spherical bushing, and cylinder spring.
The drive shaft is supported by bearings. The shoe is caulked to
the piston to form a spherical coupling. It has a pocket to relieve
thrust force generated by loading pressures and create a hydraulic
balance so that it slides lightly over shoe plate. The sub group
composed of a piston and a shoe is pressed against the shoe plate
by the action of the cylinder spring through the set plate and
spherical bushing. Similarly, the cylinder block is pressed against
valve plate by the action of the cylinder spring.
The swash plate group consists of swash plate, shoe plate, swash
plate support, tilting bushing, tilting pin and servo piston.The
servo piston moves to the right and the left as hydraulic oil
controlled by the regulator flows to a hydraulic chamber located on
both sides of the servo piston. The force exerted on the tilting
pin by the servo piston causes the swash plate to slide on support
to change the tilting angle.
The valve block group consists of valve block, valve plate and
valve plate pin. The valve plate which has two crescent ports is
attached to the valve block to feed oil to and collect oil from the
cylinder block. The oil discharged via the valve plate is routed to
an external pipe line by way of the valve block.
Section A-A: Horsepower & Power shift control sectionSection
B-B: Negative control section
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P-Q curve
Test condition- P1=P2
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Option hydraulics
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X1 circuit
X1 option is mainly used for hammer & shear.
Main line changeHammer(Single acting)- MCV --> Hammer, Hammer
--> Hyd. Tank.Shear(Double acting)- Both lines are connected to
tank.** Selection is made by Hammer & Shear select sol.(44) and
3-way valve(46).
2-stage port relief valve- Hammer (210 kgf/cm^2)- Shear(365
kgf/cm^2)**2-step port relief valve always maintains high pressure
except hammer use.
Flow control function- According to IECU setting, The amount of
flow can be adjusted by proportional valve(53).- 2-pump flow option
for X1(48)
Various RCV selection- X1 1way switch(a)- X1 2way switch(b) with
sloenoid(42)- X1 1way switch(c) with Boom floating option- X1
pedal(d)
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X1 components
12. X1 1-switch control solenoid41. X1 pedal44. Hammer shear
select sol.42. X1 2-switch control solenoid48. X1 2-pump flow
solenoid43. Shuttle valve block49. Valve 2-pump flow50. Variable
orifice46. 3-way select valve47. Hammer return filter53. Flow
control PWM valve51. Connector with orifice52. Connector with check
valveX. X1 Pressure switch
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X3 Rotator
37. Additional gear pump at the engine PTO38. Check valve39.
rotator valve40. Valve block
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Quick fit
Locking condition- Pilot pressure is always ON at the large
chamber to make quick fit lolcked position.
Releasing condition- Pilot pressure enter the small chamber and
pilot check valve open. If the pressure is lower to release quick
fit, main pressure can go to small chamber to release quick
fit.
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Hydraulic System(EC290B Prime)
Picture text:
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Hydraulic system overview
The mechanical power from engine converted to hydraulic
power.Machine has two main pumps that are variable displacement
piston pump.And it has 2 fixed gear pumps. it is for servo system
and X3.
Two-Pump flow- Boom-Up- Arm-IN & Out- X1(Option)
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Hyd. circuit(Full option)
Basic machineTravel: straight travel functionBoom-up: 2-pump
flowBoom-down: RegenerationBoom: Holding functionBoom:
PriorityArm-in & out: 2-pump flowArm: Holding functionArm-in:
RegenerationOption: 2-pump flow (selectable)Swing: priority against
arm
Option- X1- X3- Quick fit
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Hyd. circuit(Basic Machine)
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Brief circuit-1
Brief circuit for main line.
How to read this circuit diagram.In the circuit diagram, every
component has unique number and there are many parentheses.For
example FR(1-Pi2), This means that the port FR is connected to the
port Pi2 of the component 1. This is the way how to read our
circuit diagram.
Picture text:
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Brief circuit-2
Brief circuit for pilot
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Circuit animation
This animation can be used when you explain or study the
hydraulic circuit. By pressing the lines, character or spool with
mouse, you can change the colour of lines and spool position.
Picture text:
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Hydraulic Pump
**External view & sectional view is almost same with EC240B
Prime pump.
Piston pump- Model : K3V140DT-151R-9NE9-HV- Displacement(cc/rev)
: 139 X 2- Max. flow rate @ 1800rpm (LPM) : 250 X 2
Gear pump- Model : ZX10LGRZ1-07A-V- Displacement(cc/rev) : 10-
Max. flow rate @ 1800rpm (LPM) : 18
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P-Q curve
Test condition- P1=P2
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Main Control Valve
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MCV Animation
Push the component in the circuit diagram with mouse then you
can see the location of that components and other information.
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Boom up operation
1. Neutral- Center passage open- Holding valve closed
2. Joystick signal on(BU)- Spool move to upword- Center passge
close & pressurize
3. Open load check
4. Holding valve open
5. Logic valve internal spool move
6. Logic valve open
7. Logic valve close when PL side pressure is lower than boom
side.eg. Boom up + Swing at light load
8. Logic valve close when Arm In(AI) signal is strong.
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Boom down operation
1. Neutral
2. Joystick signal(BD) ON- Spool move and close center passage
partially
3. Holding valve block the return line from cylinder
4. (BD) signal move the internal valve at the holding valve to
operate pilot check valve
5. Pilot check valve open and oil in the back side of the
holding valve can be released.
6. Holding valve open- Return oil go through the back pressure
valve.- When supply pressure is low,internal check valve can be
open and make passage to the supply side.
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Arm-IN operation
1. Neutral- Holding condition
2. Joystick Arm-IN(AI) ON- Center passage block and pressurized-
The other pump side also pressurized due to center bypass valve
movement.
3. Load check open and return line is blocked by holding
valve.
4. 4pi pressure move valve and meke oil inside of holding valve
free.
5. Holding valve open.
6. Return line is restricted by arm regeneration valve when
supplying pressure is low.- Internal check open and return line is
connecting to supply line.
7. When supplying pressure is high, arm regeneration valve make
wide hole for return line to reduce back pressure.
8. Swing priority- Port-Pa has pilot signal and make restriction
at the return side to supply more oil to swing side.
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Straight travel
1. All spools are in neutral condition.- 40 bar enters in
port-Pg1 which has two orifice.- oil from one orifice pass through
two travel spool and go to the return line.- Oil from the other
orifice pass through bucket, boom, swing, option, arm and then go
to the return line.
2. Travel (RH & LH)- Spool movement block the line from
orifice and bulid up pressure.- Travel pilot pressure switch ON-
Both supply line for TR & TL is waiting in the front of the
straight travel spool but don't have connection with each
other.
3. Swing operation- Swing spool movement block the line from the
other orifice and build up pressure and this pressure moves the
straight travel valve. Now TR & TL is connected with each
other.
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Servo system layout
8. Pilot filter9. Accumulator block10. Accumulator11. Solenoid
block16. Shuttle block-117. Shuttle block-227. drain filter61.
pilot block28. flow control valve on Arm spool pilot line60. drain
block
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Hydraulic oil cooling system
18. Hyd oil cooler19. Return check 3k20. Return check 4.5k26.
Tank breather
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Option hydraulics
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X1 circuit
X1 option is mainly used for hammer & shear.
Main line changeHammer(Single acting)- MCV --> Hammer, Hammer
--> Hyd. Tank.Shear(Double acting)- Both lines are connected to
tank.** Selection is made by Hammer & Shear select sol.(40) and
3-way valve(41).
2-stage port relief valve- Hammer (210 kgf/cm^2)- Shear(365
kgf/cm^2)**2-step port relief valve always maintains high pressure
except hammer use.
Flow control function- According to IECU setting, The amount of
flow can be adjusted by proportional valve(43).- 2-pump flow option
for X1(48)
Various RCV selection- X1 1way switch(a)- X1 2way switch(b) with
sloenoid(37)- X1 1way switch(c) with Boom floating option- X1
pedal(d)
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X1 components
11. X1 1-switch control solenoid36. X1 pedal40. Hammer shear
select sol.37. X1 2-switch control solenoid48. X1 2-pump flow
solenoid38. Shuttle valve block41. 3-way select valve42. Hammer
return filter43. Flow control PWM valveX. X1 Pressure switch
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X3 Rotator
32. Additional gear pump at the engine PTO33. Check valve34.
rotator valve35. Valve block
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Quick fit
Locking condition- Pilot pressure is always ON at the large
chamber to make quick fit lolcked position.
Releasing condition- Pilot pressure enter the small chamber and
pilot check valve open. If the pressure is lower to release quick
fit, main pressure can go to small chamber to release quick
fit.
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U-Quick fit
X: Quick fit solenoid valveY: Quick fit cylinder
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Boom floating circuit
From B Prime, we need VCADS Pro to turn on the parameter.When
pushing the boom float position switch, solenoid(48) is ON. This is
ready condition to use float position.After then, if joystick is at
boom down position, both side of cylinder is connected to the tank.
That means boom is dropped down by gravity and boom cylinder can be
moved by external force freely.
For this option, boom horse rupture valve is necessary.
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Hydraulic System(COMMON)
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Cylinder
1. Piston2. Tube3. Rod4. Gland5. Cushion ring6. Cushion
plunger
a. Dust wiperb. Rod packingc. Buffer ringd. Dry bearinge.
Contamination sealf. Wear ringg. Piston packing
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Cushion operation
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Joystick
The remote control valve is a kind of the reducing valve and has
four reducing valves controlling the secondary pressure in one
valve casing. Its secondary pressure is controlled by adjusting the
tilting angle of the handle. And the electric switches are equipped
inside of joystick for various option.
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Travel pedal
Basic function is almost same with joystick and this pedal has
damping function to prevent oscilation when releasing the
lever.
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Option pedal
The component itself is almost same between X1 & X2 pedal
but the characteristic curve is a little bit different.
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Boom hose rupture valve
The boom hose rupture valves mounted directly on the inlet ports
of the boom cylinder piston sides.The line rupture valve consists
of a servo hydraulic valve, logic valve, check valve, pressure
relief valve and a housing.The line rupture valve function is to
prevent an accident caused by a sudden dropping of the boom when a
pipe or hose ruptures. It also prevents boom cylinder creep caused
by internal leakage of the main control valve.NeutralWhen joystick
is in neutral position, poppet(2)is blocking the passage from port
P2 to port P1. Poppet(1) also maintains blocking position becasuse
line(4) is blocked by spool(3).Boom downWhen joystick is in
boom-down position, jostick signal go to port Pi. The spool(3)
moves to left. poppet(2)is blocking the passage from port P2 to
port P1. But poppet(1) opens and makes passage from port P2 to port
P1 through spool(3) becuase of line(4) is connected to T2.Boom
raiseWhen joystick is in boom-up position, poppet(2) open the
passage from port P2 to port P1 becasue P1 pressure is high.
Poppet(1) maintains blocking position becasuse line(4) is blocked
by spool(3).
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EC210BF SERVICE TRAINING
This material will gives you only specifics of EC210BF.
EC210BF: Forestry application for Brasil & RussiaApplied
machine Serial no.: 70001~
This material is combined as below.
01_General02_Electric system03_Hydraulic System
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Machine Overview(2-Way)
Applied machine serial no.: 70001~
1.Boom cylinder guard 2.Arm cylinder protector guard3.Bucket
cylinder protector gurad4.Cover for swing ring gear(Bolted with
4-pieces)5.Track guard6.Side impact protector7.Counterweight work
light8.Front protector guard9.Swing room guard10.Side work
light11.Front work lights12.Upper protector guard13.Extra work
lights14.Additional fuse box15.Water tank for operator
convenience**Bucket cylinder is available.
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Overview(2-Way)
The 2-way hydraulic circuit is almost same with EC210B Prime
which has X1 2-switch control and 2 pump flow option. The machine
will be usually used for log loader and road construction machine.
Bucket is used and Harvester is available in Hammer selection mode.
1. Log loader2. Harvester
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Machine Overview(1-Way)
Applied machine serial no.: 70001~
1.Filter for X1 return 2.Filter for X1 supply3.Filter for X1
drain4.Adaptor stick-Adaptor stick upward with oil tank-Adaptor
stick straight with oil tank-Adaptor stick downward HD type5.Boom
cylinder guard6.Cover for swing ring gear(Bolted with
4-pieces)7.Water tank for operator convenience8.Additional fuse
box9.Track guard10.Extra work lights11.Upper protector
guard12.Swing room guard13.Front protector guard14.Arm cylinder
protection15.Front work lights16.Side work lights17.Counterweights
work lights18.Side impact protector**No bucket cylinder
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Overview(1-Way)
This machine will be used for harvester head or processing.
** Some of PWM valves and solenoid valves will be controlled by
harvester ECU.
The machine will be possible to supply 2-pump oil using bucket
side control. That means BKT side is controlled by harvester ECU.
In this case, BKT pilot signal can be used for X3.
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Electric System(EC210BF)
Picture text:
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X1 Forest(2-way)
PAR(BFJ: X1 Flow contriol)=ON
** Before turn on above parameter, PWM9109 must be
installed.
- X1 flow rate setting on IECU- Control lock-out lever up,
RE9106(R4)=ON
1. If Hammer selection(Harvester)- When SW9107, hammer selection
button=ON, MA9117=ON.- When joystick- upper RH button=ON,
MA9103=ON.- When joystick- upper LH button=ON, MA9104=OFF.If
additional ECU for forestry attachemnt is installed, hammer can be
controlled by PWM valve(PWM-A2)
2. If Shear selection(Log handler)- When SW9107, Shear selection
button=ON, MA9118=ON- When joystick- upper RH button=ON,
MA9103=ON.- When joystick- upper LH button=ON, MA9104=ON.If
additional ECU for forestry attachemnt is installed, Shear can be
controlled by PWM valve(PWM-A1 & PWM-A2)
3. Current to PWM9109- X1 Pressure switch(SE9112)=ON- VECU
supplies control current according to the set flow on the IECU
4.X1 Conflux- When SW9112=ON, MA9116=ON.- X1 Conflux cut-off
during travel operation- When SE4306-1=ON, RE9116A(R10)=ON &
MA9116=OFF
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X1 forest (1-way)** MA9103 & MA9103A are connected to SW9107
from factory in the begining. But these connection will be cutoff
from SW9107 and will be connected to the Harvester ECU. Customer
can select on-off control by the solenoid valves or proportional
control by PWM Valve
And also the joystick will be changed by header precessor
supplier.
**Bucket pilot signal from joystick can be used for X3.
PAR(BFJ: X1 Flow contriol)=ON
** Before turn on above parameter, PWM9109 must be
installed.
- X1 flow rate setting on IECU
1. Hammer selection(Harvester)- Control lock-out lever up,
RE9106(R4)=ON- When SW9107 Hammer selection button=ON, MA9117=ON.-
MA9117 supplies primary pilot pressure to MA9103, MA9103A & PWM
Valve
2. High speed- For sawing or log feeding- HECU activates
MA9103(PWM A-2) & MA9103A(PWM A-1)- P1 & P2 pump oil are
supplied to the harvester for high speed
3. Low speed- For other operation- HECU activates MA9103(PWM
A-2)- Only P1 pump oil is supplied to the harvester for low
speed
4. Current to PWM9109- X1 Pressure switch(SE9112)=ON- VECU
supplies control current according to the set flow on the IECU
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X3 Circuit(X1, 1-way only)
Hydraulic pressure switchs are installed on BKT 2nd pressure
Line and the signals are used for X3 control.
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Additional Fuse Box 1. Additional fuse box: FUS6, FUS7, FUS9,
FUS102. Additional fuse box: FUS1~FUS5
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Electric box(EC210BF vs EC210B Prime)
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Harvester ECU Power supply
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Light Circuit
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Hydraulic System(EC210BF)
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Full hydraulic circuit(2-way)
**The 2-way hydraulic circuit is almost same with EC210B Prime
which has X1 2-switch control and 2 pump flow option. The machine
will be usually used for log loader and road construction
machine.
1. Main pump2. Main control valve3. Swing drive unit4. Track
drive unit5. Boom cylinder6. Arm cylinder7. Bucket cylinder8.
Turning joint9. Slew ring gear10. Radiator11. Pilot filter12.
Accumulator block13. Accumulator14. Solenoid valve block(3-sol.)15.
Solenoid valve block(3-sol.)16. Block17. RCV Pedal for Travel18.
Joystick(LH)19. Joystick(RH)20. Shuttle valve block21. Shuttle
valve block22. Pilot select valve23. Block24. Drain filter25. Check
valve(1.5k)26. Bypass valve27. Hydraulic tank28. Air breather29.
Return filter element
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X1 Circuit animation(2-way)
The 2-way hydraulic circuit is almost same with EC210B Prime
which has X1 2-switch control and 2 pump flow option. The machine
will be usually used for log loader and road construction machine.
Bucket is used and harvester operation is available in Hammer
selection.
If additional ECU for forestry attachemnt is installed, hammer
& Shear can be controlled by PWM valve(PWM-A1, PWM-A2)
During travel operation, the X1 Conflux is deactivated by the
travel pilot pressure switch operation.
2 step port relief valve setting-High pressure: 365 kgf/cm^2-Low
pressure: 210 kgf/cm^2
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X1 Components(2-way)
14. Solenoid valve(X1, Hammer or Thumb-in) 51. Solenoid
valve(x1, Shear or Thumb-out)53. 2-way, 1-way select solenoid
valve67. X1 Conflux solenoid valve50. PWM valve(PWM-A1 &
PWM-A2)59. X1 pilot pressure switch46. X1 select valve49. X1 flow
control valve45. Orifice & Check valve44. Check valve43.
Variable orifice42. Select valve(2-pump)
Picture text:
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Full hydraulic circuit(1-way)
**This machine will be used for harvester head or
processing.
1. Main pump2. Main control valve3. Swing drive unit4. Track
drive unit5. Boom cylinder6. Arm cylinder8. Turning joint9. Slewing
ring gear10. Radiator11. Pilot filter12. Accumulator block13.
Accumulator14. Solenoid valve(3 sol.)15. Solenoid valve(3 sol.)16.
Block17. RCV pedal for travel18. Joystick(LH)19. Joystick(RH)20.
Shuttle valve block21. Shuttle valve22. Pilot select valve23.
Block24. Drain filter25. Check valve(1.5k)26. Bypass valve27.
Hydraulic tank28. Air breather29. Return filter element30. Bypass
valve31. Strainer
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X1 Circuit animation(1-Way)
This machine will be used for harvester head or processing.
** Some of PWM