ELECTRICAL
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CX EXCAVATORS
RPM CONTROL
Circuit Configuration
1. Proportional solenoid
2. Power boost solenoid
3. Main controller
4. Engine controller
5. Engine
6. Electronic injection pump
Values set for each mode
Mode Item CX210 CX240 Power Boost
Engine rpm (max) 2000 ± 10 2200 ± 10
mA Current (max) 407 424
H MODE
mA Current (min) 292 307
Automatic Power Boost
Engine rpm (max- 200) 1800 ± 10 2000 ± 10S MODE
mA Current (90% of torque) 292 307
Automatic Power Boost
Engine rpm (max- 300) 1700 ± 10 1900 ± 10L MODE
mA Current (70% of torque) < 50 < 50
Constant
LOW IDLE Engine rpm (max) 900 ± 10 900 ± 10
Values set for each model
Note: Shown above are for normal conditions; except the following exceptions:
1. In “L” mode if travel only is actuated, the pump is controlled by the value of “S” mode
current.
2. In “L” mode if a hydraulic hammer is used, the pump is controlled by the value of “S”
mode current.
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