PIN-MASTER 8M7229 - Caterpillar

Switches for the Joystick
Illustration 1 g06263310
Joysticks with thumb wheel
(1) Left Hand Joystick Switch 3
(2) Left Hand Joystick Switch 4
(3) Left Hand Joystick
(4) Left Hand Joystick Switch 2
(5) Left Hand Joystick Thumbwheel
(6) Right Hand Joystick Thumbwheel
(7) Right Hand Joystick Switch 2
(8) Right Hand Joystick Switch 1
(9) Right Hand Joystick
(10) Right Hand Joystick Switch 4
(11) Right Hand Joystick Switch 3
Illustration 2 g06235283
Electrical harness
Table 1
Supply Voltage + 4.5V ~ +5.5V
Output Signal 550 55 Hz (PWM)
Output Range 5% ~ 95% Note: The values in Table 1 are for bench testing only. Values may not represent parameters for machine systems specifications.
Illustration 3 g06246069
PWM signal vs thumb wheel operation angle (deg)
Joystick Thumb Wheel for Clockwise Rotation
Joystick thumb wheel for clockwise rotation of the work tool is located on the left joystick. When joystick thumb wheel (5) is pressed FORWARD, a signal is sent to the solenoid for medium pressure (clockwise rotation). The work tool will rotate in a clockwise direction. The joystick thumb wheel is not serviceable. The joystick is serviceable.Joystick Thumb Wheel for Counterclockwise Rotation
Joystick thumb wheel for counterclockwise rotation of the work tool is located on the left joystick. When the joystick thumb wheel (5) is pressed BACKWARD, a signal is sent to the solenoid for medium pressure (counterclockwise rotation). The work tool will rotate in a counterclockwise direction. The joystick thumb wheel is not serviceable. The joystick is serviceable.Extension of the Work Tool Joystick Thumb Wheel
Joystick thumb wheel for extension of the attachment control valve is located on the right joystick. When joystick thumb wheel (6) is pressed FORWARD, a signal is sent to the solenoid for the attachment control valve. Pilot oil will shift the spool in the attachment control valve. The oil from the pump will flow to the work tool extend. The joystick thumb wheel is not serviceable. The joystick is serviceable.Retraction of the Work Tool Joystick Thumb Wheel
Joystick thumb wheel for retraction of the attachment control valve (6) is located on the right joystick. When joystick thumb wheel (6) is pressed BACKWARD, a signal is sent to the solenoid for the attachment control valve. Pilot oil will shift the spool in the attachment control valve. The oil from the pump will flow to the work tool retract. The joystick thumb wheel is not serviceable. The joystick is serviceable.Joystick Switch (ON/OFF)
The work tool operates when the switch is depressed. When the switch is pressed, a signal is sent to the machine ECM. The machine ECM sends a signal to the solenoids to control the attachment control valves for one-way flow to the work tool. When the switch is released, the machine ECM discontinues power to the solenoids. The work tool stops operating.Foot Pedal (Electric)
Illustration 4 g06218923
Foot pedal (electric) and electrical harness
Table 2
Supply Voltage + 4.5V ~ +5.5V
Output Signal 500 75 Hz (PWM)
Output Range 5% ~ 95% Note: The values in Table 2 are for bench testing only. Values may not represent parameters for machine systems specifications.
Illustration 5 g06218935
Output signal (PWM) vs foot pedal angle (deg)
This pedal detects the operator input, and