| |
| Illustration 1 | g03635338 |
|
Key Start Switch | |
The switch is located on the RH operator console.
The switch is a rotary key switch. The START position is a momentary position.
The switch tells the ECM that the operator wants to start the engine. When the switch is in the START position, the circuit is closed. This applies a +battery voltage to pin J1-46 (wire 307-OR(Orange)) of the ECM. If the operator direction switch is in the neutral position, the ECM will turn on the output for the start relay.
Quick Coupler Switch (Optional)
| |
| Illustration 2 | g01401808 |
|
Quick Coupler Switch | |
The Quick Coupler Switch allows the ECM to control the quick coupler valve solenoid.
| |
| Illustration 3 | g01404987 |
|
Parking Brake Switch | |
The switch is located under the handbrake.
The parking brake switch input is processed by the ECM to control parking brake status annunciation (via cluster) as well as warning, alarm, and protection functionality, namely:
- Parking brake engaged while F or R direction requested.
- Parking brake engaged while machine moving.
- Parking brake “drive-through” inhibition and associated override functionality.
The mechanical parking brake is actuated via a hand lever in the cab. The parking brake switch is used to determine if the parking brake is being applied by the operator.
Note: The switch state indicates that the parking brake lever is fully off or not fully off. It is not a definitive indicator of the holding force of the parking brake.
| |
| Illustration 4 | g03649880 |
|
Speed 1 / Speed 2 Switch on the Joystick | |
Note: Some publications may refer to this as the “Two-Speed” switch.
The switch is located on the front side of the Joystick. The Speed 1 / Speed 2 switch is a push-button switch.
The switch is used to tell the ECM that the operator wants to toggle between the two hystat speed modes.
The joystick is operated thru the CAN data link.
Speed Range 1 =
Speed Range 2 =
| |
| Illustration 5 | g01402389 |
|
High/Low Switch | |
The switch changes from High Speed Mode
Note: With the 910K and 914K, speed ranges can be selected while the machine is moving.
|
| |
| Illustration 6 | g03649880 |
|
Joystick FNR Switch | |
The Joystick FNR Switch provides three switch inputs to the system, which are read to determine the direction of travel requested by the operator.
The FNR request and fault status are passed to the hystat subsystem, which then engages forward drive, reverse drive, or neutralizes the hystat. The FNR request is also used to determine the appropriate states of the FNR lamps on the instrument cluster.
The joystick is operated thru the CAN data link.
Rear Window Defrost Switch (Optional)
| |
| Illustration 7 | g01402774 |
|
Rear Window Defrost Switch | |
This switch is used to activate the rear window defrost function. When the ECM detects a depress-release cycle of the switch, it toggles (on/off) the state of defroster relay output. See the “Rear Window Defrost” subsection in Systems Operation, "Features" of this document for further description of the control feature.
Implement Lockout Switch (Optional)
| |
| Illustration 8 | g01402804 |
|
Implement Lockout Switch | |
When activated, the Implement Lockout Switch provides an input to the ECM which inhibits implement movement through the following actions:
- Removing pilot hydraulic supply pressure to all pilot solenoids by de-energizing the pilot shut-off solenoid.
- Overriding all electro-hydraulic demands to zero (no movement)
- De-energizing the soft detents.
Continuous Flow Switch (Optional)
|
| |
| Illustration 9 | g03649880 |
|
Continuous Flow switch on the Joystick | |
The joystick is operated thru the CAN data link.
This switch is mounted in the joystick and is used to activate the third function auxiliary continuous flow mode. The ECM will activate continuous flow mode when it detects that the switch has closed briefly and then opened. See the “Operator Lever Control - Continuous Mode” subsection in Systems Operation, "Features" of this document for further description of the control feature.
| |
| Illustration 10 | g03428877 |
|
(1) Ride Control
(2) Rackback Kickout (3) Lift Kickout (4) Implement Modulation (5) Throttle Lock Set/Decelerate (6) Throttle Lock Resume/Accelerate (7) Reduced Rimpull Hystat (8) Hystat Aggressiveness Adjustment | |
(1) Ride Control Enable (if equipped) - Press to Enable or Disable the Ride Control System. When Ride Control is enabled, the LED above the button will be lit.
(2) Rackback Kickout Enable (if equipped) - Press to Enable or Disable the Rackback Kickout. When the Rackback Kickout is enabled, the LED above the button will be lit.
(3) Lift Kickout Enable (if equipped) - Press to Enable or Disable the Lift Kickout. When the Lift Kickout is enabled, the LED above the button will be lit.
(4) Implement Modulation Adjustment - Press and release the button to toggle through the Implement modulation settings. The settings correspond to Fine, Normal, and Course modulation. Fine is indicated by 1 LED on. Normal is indicated by 2 LEDs on. Course is indicated by 3 LEDs on. When in Fine mode, the maximum cycle times of the implements will be reduced.
(5) Throttle Lock Set/Decelerate - Press the Throttle Pedal until the desired speed is achieved and then press the Throttle Lock Set/Decelerate button to lock that speed. When the Throttle Lock is active, the LED above the button will be lit. Press and hold of the switch will slowly decelerate the locked throttle speed to allow for small adjustments.
Note: To cancel throttle lock, press and release the Set button again or press the brake pedal past 85% travel. Alternatively, turning off Economy Mode will also cancel Throttle Lock.
(6) Throttle Lock Resume/Accelerate - Press the button to resume previous throttle lock that was set before being Canceled. Press and hold of the switch will slowly accelerate the locked throttle speed to allow for small adjustments.
(7) Reduced Rimpull - Press and release the button to toggle through the reduced rimpull settings. The settings correspond to Maximum rimpull, Medium-High rimpull, Medium rimpull, and Low rimpull. The percentage of rimpull that is allowed in each mode is 100%, 90%, 80%, and 60% for Max, Medium High, Medium Low, and Low. Maximum rimpull is indicated by all 3 LEDs on. Medium-High rimpull is indicated by 2 LEDs on. Medium Rimpull is indicated by 1 LED on. Low rimpull is indicated off by all LEDs.
(8) Hystat Aggressiveness Adjustment - Press and release the button to toggle through hystat aggressiveness settings. The settings correspond to Soft, Normal, and Hard aggressiveness. Soft is indicated by 1 LED on. Normal is indicated by 2 LEDs on. Hard is indicated by 3 LEDs on.
Note: Options not selected will have the backlight turned off.
Hydraulic Filter Bypass Switch
| |
| Illustration 11 | g01283403 |
|
Hydraulic Filter Bypass Switch | |
The hydraulic filter bypass switch illuminates the filter bypass lamp on the instrument cluster when oil is bypassing the hydraulic oil filter. The contacts of the switch are normally open. If the pressure increases above the actuation pressure, the hydraulic return oil bypasses the filter, closing the switch. This connection to ground completes the circuit for the filter bypass lamp. This LED indicator on the cluster, notifies the operator of the plugged hydraulic filter. Once the pressure drops below the deactuation pressure, the switch opens. The filter is functioning properly when the switch opens. During extreme cold starts, the filter may bypass until the hydraulic oil begins to warm.
| |
| Illustration 12 | g01407289 |
|
Drive Motor Speed Sensor | |
The Drive Motor Speed Sensor allows the ECM to determine the speed and direction of the hydraulic drive motor. The drive motor speed sensor is powered by the regulated 8 V DC power supply on the Machine ECM.
3rd Function Thumb wheel Sensor
|
| |
| Illustration 13 | g03649880 |
|
3rd Function Thumb wheel Sensor on the Joystick | |
The joystick is operated thru the CAN data link.
Throttle Pedal and Brake/Decel Pedal Sensors
| |
| Illustration 14 | g01407352 |
|
Illustration for Throttle Position and Brake/Decel Pedal Sensors | |
The Throttle Position Sensor determines the desired engine speed. The throttle position sensor provides a PWM signal proportional to the position of the throttle pedal. The duty cycle increases as the pedal is depressed. The duty cycle is converted to a percent desired engine speed value, which is used to command the required drive speed from the hydrostatic drive system.
The Brake/Decel Pedal Sensor provides input to the ECM which is processed to provide reduced pump displacement and increased motor displacement commands. The Brake/Decel Pedal Sensor is calibrated at three points through the Electronic Technician service tool to determine the top stop of pedal travel and the brake pressure value specified in the calibration procedure and the end of pedal travel. The calibration procedure for the Brake/Decel Pedal Sensor in ET requires:
- Parking brake switch indicates parking brake ON
- Operator FNR request is NEUTRAL
- Engine ON, Keyswitch ON
Refer to Testing and Adjusting, "Calibration" for information on the calibration procedure.
| |
| Illustration 15 | g01407543 |
|
Creeper Control | |
The sensor signal is PWM and the ECM monitors for abnormal/bad signals.
This feature processes the input for the creeper control position sensor and passes the requested state to the control system.
Hydraulic Oil Temperature Sensor
| |
| Illustration 16 | g01418019 |
The resistance of the hydraulic oil temperature sensor varies with temperature. The ECM measures the resistance to determine the temperature of the oil.
This feature reads the hydraulic oil temperature sensor and supports the following:
- Driving the position of the instrument cluster hydraulic oil temperature gauge
- Raising events upon detection of high hydraulic oil temperature conditions
Engine Coolant Temperature Sensor
| |
| Illustration 17 | g01273688 |
The resistance of the engine coolant temperature sensor varies with temperature. The ECM measures the resistance to determine the temperature of the oil.
This feature reads the engine coolant temperature sensor and supports the following:
- Driving the position of the instrument cluster engine coolant temperature gauge
- Raising events upon detection of high engine coolant temperature conditions
Note: This is processed by the Engine ECM.