ELECTRICAL
4 - 6
CX EXCAVATORS
RPM CONTROL
Engine rpm Control, CX130/CX160
1) Engine idle rpm for both models is permanently stored in the controller memory.
2) Programming the controller to the proper machine model number and allowing the
controller to calibrate the throttle motor will determine the idling speed.
3) The throttle will return to set rpm’s with high precision.
Automatic Adjustment
The procedure of programming the controller and calibrating the throttle motor is called
Automatic Adjustment.
Automatic Adjustment must be performed:
a) When replacing a new controller
b) When replacing a new throttle motor
c) When adjusting or replacing the control linkage between the engine and throttle motor
Automatic Adjustment Explanation
1) Engine RPM at the time of full throttle: FULL is read.
(H) Mode MAX)
2) While monitoring engine RPM, RPM is decreased automatically.
RS=FULL-D1
RL=FULL-D2
RI=Idling revolutions
When each RPM is reached, position of a throttle motor, PS, PL and PI are read.
3) PS, PL and PI positions are stored in the controller.
Refer to the Controller Calibration procedure in Section 7 of this manual.
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