GROUP 2 MODE SELECTION SYSTEM

1. POWER MODE SELECTION SYSTEM

Main control valve

Engine

ECM
Main pump Pilot pump
Pump power
shift EPPR
CAN

Cluster

Drive signal
MCU

Accel dial signal CN-16A CN-16

Normal

CN-16B
Emergency

Power mode Accel dial

pilot lamp

Power mode switch signal

21095MS02

Mode selection system (micro computer based electro-hydraulic pump and engine mutual control
system) optimizes the engine and pump performance.
The combination of 3 power modes (P, S, E) and accel dial position (10 set) makes it possible to use
the engine and pump power more effectively corresponding to the work conditions from a heavy and
great power requesting work to a light and precise work.

Engine rpm Power shift by EPPR valve

Power Standard Option Standard Option
mode Application
Current Pressure Current Pressure
Unload Load Unload Load (mA) (kgf/cm2) (mA) (kgf/cm2)

P Heavy duty power 1950Ü50 1900Ü50 1950Ü50 1900Ü50 185Ü30 2.5 160Ü30 0
S Standard power 1750Ü50 1700Ü50 1850Ü50 1800Ü50 290Ü30 8Ü3 290Ü30 8Ü3
E Economy operation 1600Ü50 1700Ü50 1700Ü50 1800Ü50 365Ü30 13Ü3 365Ü30 13Ü3
AUTO Engine
1000Ü100 - 1000Ü100 - 700Ü30 35Ü3 700Ü30 35Ü3
DECEL deceleration
One touch Engine quick
850Ü100 - 850Ü100 - 700Ü30 35Ü3 700Ü30 35Ü3
decel deceleration
KEY Key switch
850Ü100 - 850Ü100 - 700Ü30 35Ü3 700Ü30 35Ü3
START start position

※ Power shift (Standard/Option) can be changed by "Service menu" in "Management" on the cluster.

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2. WORK MODE SELECTION SYSTEM
Work mode consists of the general operation (bucket) and the optional attachment (breaker,
crusher).

Attachment pilot
pressure sensor
Main control valve
Work tool
Arm 1 Arm 2
SOLENOID VALVE
Option Bucket
Attachment
pressure
Boom 2 Boom 1
Attachment
Swing Travel(LH) conflux

Travel(RH) Attachment
safety

Engine

ECM
Main pump Pilot pump
Pump power
shift EPPR
CAN

Cluster

Drive signal

Drive signal
MCU
Pressure signal

Accel dial signal CN-16A CN-16

Normal

CN-16B
Emergency

Work mode
pilot lamp Work mode switch signal Accel dial

21095MS03

1) GENERAL WORK MODE (bucket)

This mode is used to general digging work.
2) ATT WORK MODE (breaker, crusher)
It controls the pump flow and system pressure according to the operation of breaker or crusher.

General mode Work tool

Description
Bucket Breaker Crusher
Attachment safety solenoid OFF ON ON
Attachment pressure solenoid OFF OFF ON
Attachment conflux solenoid OFF OFF ON/OFF
Attachment flow EPPR current 100 mA 100~700 mA 100~700 mA

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3. USER MODE SELECTION SYSTEM

Main control valve

Engine

ECM
Main pump Pilot pump
Pump power
shift EPPR

CAN

Cluster

Drive signal
MCU

Accel dial signal CN-16A CN-16

Normal

CN-16B
Emergency

User mode Accel dial

pilot lamp

User mode switch signal

21095MS03A

1) High idle rpm, auto idle rpm and EPPR pressure can be adjusted and memorized in the U-mode.
2) LCD segment vs parameter setting
Step Engine speed Idle speed Power shift
( ) (rpm) (rpm) (bar)
1 1500 700 0
2 1550 750 2
3 1600 800 4
4 1650 850 (low idle) 7
5 1700 900 12
6 1750 950 15
7 1800 1000 (decel rpm) 20
8 1850 1050 24
9 1900 1100 28
10 1950 1150 33

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