Group 2 Mode Selection System - Hyundai R480LC-9S Service Manual

Crawler excavator
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GROUP 2 MODE SELECTION SYSTEM (CLUSTER TYPE 1)

GROUP 2 MODE SELECTION SYSTEM

1. POWER MODE SELECTION SYSTEM
1. POWER MODE SELECTION SYSTEM
Cluster
Power mode
pilot lamp
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.
Power
Application
mode
P
Heavy duty power 1850±50
S
Standard power
E
Economy operation 1650±50
AUTO
Engine
DECEL
deceleration
One touch
Engine quick
decel
deceleration
KEY
Key switch
START
start position
Power shift (Standard/Option) can be changed by "Service menu" in "Management" on the cluster.
Engine
ECM
Power mode switch signal
Engine rpm
Standard
Unload
Load
Unload
1950±50 1850±50
1750±50
1850±50 1800±50
1750±50 1700±50
1100±100
-
1100±100
1000±100
-
1000±100
1000±100
-
1000±100
Main control valve
Main pump
Pilot pump
Pump power
shift EPPR
Drive signal
MCU
Accel dial signal
Option
Standard
Current
Load
(mA)
1950±50
330±30
1900±50
360±30
1800±50
360±30
-
700±30
-
700±30
-
700±30
5-5
CN-16A
CN-16
Normal
CN-16B
Emergency
Accel dial
4809S5MS18
Power shift by EPPR valve
Option
Pressure
Current
Pressure
(kgf/cm
)
(mA)
(kgf/cm
2
10
290±30
12±3
330±30
10±3
12±3
330±30
10±3
38±3
700±30
38±3
38±3
700±30
38±3
38±3
700±30
38±3
)
2
8

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