| |
| Illustration 1 | g01207723 |
|
Joysticks with thumb wheel (1) Horn (2) Unused (3) Left joystick thumb wheel for the rotate circuit (4) Right joystick thumb wheel for the activation of the work tool (5) Hammer switch (6) One touch low idle (7) Left joystick (8) Right joystick | |
| |
| Illustration 2 | g02263114 |
|
Electrical harness | |
| Supply Voltage | + 7.6V ~ +12.6V |
| Output Signal | 500 ± 50 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 | g02303736 |
|
PWM signal vs thumb wheel operation angle (deg) | |
When horn switch (1) is depressed, power is sent to the horn relay. The horn relay sends power to the horn.
Joystick Thumb Wheel for Clockwise Rotation
Joystick thumb wheel for clockwise rotation of the work tool (3) is located on the left joystick. When the joystick thumb wheel 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 (3) is located on the left joystick. When the joystick thumb wheel is pressed BACKWARD, 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.
Extension of the Work Tool Joystick Thumb Wheel
Joystick thumb wheel for extension of the attachment control valve (4) is located on the right joystick. When the joystick thumb wheel 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. 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 (4) is located on the right joystick. When the joystick thumb wheel 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. The joystick thumb wheel is not serviceable. The joystick is serviceable.
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.
When one touch low idle (6) is pressed, the engine rpm is dropped. When a function is moved from the neutral position, one touch low idle is turned off and the machine resumes the set throttle setting.
| |
| Illustration 4 | g01148800 |
|
Foot Switch | |
The work tool operates when the foot switch is depressed. When the foot 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.
| |
| Illustration 5 | g02303635 |
|
Foot pedal (electric) | |
| |
| Illustration 6 | g02263119 |
|
Electrical harness | |
| Supply Voltage | + 7.6V ~ +12.6V |
| Output Signal | 500 ± 50 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 7 | g02303594 |
|
Output signal (PWM) vs foot pedal angle (deg) | |
This pedal detects the operator input, and sends the input to machine ECM as a PWM signal.
Extension of the Work Tool (Pedal)
Pedal for extension of the attachment control valve is located left of the travel pedals. When the pedal 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.
Retraction of the Work Tool (Pedal)
Pedal for retraction of the attachment control valve is located left of the travel pedals. When the pedal 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.
Pressure Switch - Auxiliary Foot Pedal
| |
| Illustration 8 | g02332474 |
|
Pressure switch | |
| Actuation Pressure | 490 ± 49 kPa |
| Deactuation Pressure | 294 kPa minimum |
| Rating | + 12V to + 32 V DC
0.01 Amp to 1 Amp |
| Pressure Range | 0 to 10 MPa |
Note: The values in Table 3 are for bench testing only. Values may not represent parameters for machine systems specifications.
This pressure switch is used on Combined Function - Hydraulic Control with Medium Pressure systems. The switch detects foot pedal operation for medium pressure to the work tool. The detected signal is sent to the ECM and is used for pump flow control and engine speed control.