Display
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| Illustration 1 | g01021351 |
Display (1) Liquid Crystal Display (LCD) (2) "Left Mast Elevation/ Menu Scroll" switch (3) "Right Mast Elevation/ Menu Scroll" switch (4) "Auto/Manual" Light Emitting Diodes (LED) (5) "Elevation Select" switch (6) "Cursor Scroll" button (7) "Power/Setup" switch (8) "ESC/Left Reset/Left Bench" button (9) "OK/Right Reset/Right Bench" button (10) Left Grade indicators (11) Right Grade indicators (12) Sensor (Ambient light) | |
The Display is an onboard computer for the AccuGrade Laser system. The Display is mounted in the cab of the machine.
Features and Functions
The display allows you to set up and operate the AccuGrade Laser system via the LCD panel, LED grade indicators, toggle switches, and buttons. Refer to Illustration 1 for the layout of the display.
| Features of the Display | ||
| Callout | Feature | Description |
| 1 | Liquid Crystal Display (LCD) | Guidance is displayed in normal operation. Selectable Menus are shown in the Setup mode. |
| 2 | "Left Mast Elevation/ Menu Scroll" switch | Raise or lower the reference elevation. Scroll through the menus. |
| 3 | "Right Mast Elevation/ Menu Scroll" switch | Raise or lower the reference elevation. Scroll through the menus. |
| 4 | "Auto/Manual" Light Emitting Diodes (LED) | These indicators show the operator which control mode the system is in. Automatic (green) or Manual (amber). |
| 5 | "Elevation Select" switch | The elevation switch is used in order to select "Lift" only, "Lift and Tilt", or "Tilt" only. The Elevation Select switch is functional only on a dual mast system with the Operation Mode set to "Independent" or "Cut/fill". |
| 6 | "Cursor scroll" button | This button advances the cursor horizontally through numeric values. |
| 7 | "Power/Setup" switch | Switches the Display on or off. Accesses the setup menu when the switch is in the "i" position. |
| 8 | "ESC/Left Reset/Left Bench" button | Permits the left laser receiver, when connected to an electric mast, to search for and lock onto the center of the laser beam. With the electric mast, the on-grade location is always at the center of the receiver. Allows changes made in the setup menu to be rejected. When the ESC key and the OK key are pressed simultaneously, the displayed value will be reset to zero. Refer to Operation and Maintenance Manual, "Set Reference Elevation" Allows you step back one level in the setup menu. |
| 9 | "OK/Right Reset/Right Bench" button | Permits the right laser receiver, when connected to an electric mast, to search for and lock onto the center of the laser beam. With the electric mast, the on-grade location is always at the center of the receiver. Allows changes made in the setup menu to be accepted. When the ESC key and the OK key are pressed simultaneously, the displayed value will be reset to zero. Refer to Operation and Maintenance Manual, "Set Reference Elevation" Allows you step forward one level in the setup menu. |
| 10 | Left Grade indicators | Amber colored arrows indicate when the machine's cutting edge under the left mast is above or below grade. The arrows show the direction the cutting edge needs to move. A green line indicates that the cutting edge under the left mast is on-grade. Note: The LED grade indicators on the Display are easily visible when illuminated. |
| 11 | Right Grade indicators | Amber colored arrows indicate when the machine's cutting edge under the right mast is above or below grade. The arrows show the direction the cutting edge needs to move. A green line indicates that the cutting edge is on-grade under the right mast. Note: The LED grade indicators on the Display are easily visible when illuminated. |
| 12 | Sensor (Ambient light) | Measures the ambient light and automatically adjusts the brightness of the LEDs for optimal viewing. |
Rear Panel of the Display
The following items are located on the rear panel of the Display. These items and the corresponding functions are listed below:
6 pin CAN Data Link / power connector - Connects the display to the rest of the system.
6 socket remote switch connector - Connects the display to optional, programmable remote switches.
Audio alert - Sounds when any remote switch is selected. A single tone is emitted with each selection. Two short tones alert you to any error messages. Three short tones indicate that the machine's cutting edge has not moved to the correct elevation (grade and/or slope) within three seconds of going off-grade.
The Lockout Functions
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| Illustration 2 | g01048925 |
The "Hydraulics Available" icons indicate the status of the "Hydraulic Control System" for automatic operation. The display receives the hydraulic control status from the transmission ECM.
There are three hydraulic lockout functions that are utilized by the AccuGrade Laser system. The display will show a message to the operator in order to explain the reason for the lockout. The hydraulic lockout functions are listed below:
Auto Not Allowed (Icon Flashing) - The machine's Hydrostatic Transmission ECM monitors the status of the machine's park brake switch. When the ECM determines that the park brake switch has been placed in the ON position, the status of the switch is broadcast to the Display. The icon indicates the parking brake is ON. The flashing icon also indicates a possible fault condition that has disabled the hydraulics.
No Operator Detected - The machine's Hydrostatic Transmission ECM broadcasts the status of the transmission to the display when the machine is in neutral. If the Display has not detected operator interaction for a period of 60 seconds the system will be deactivated. The display will allow the system to reactivate when the transmission is in neutral, unless the park brake switch is in the ON position.
Service Mode - If the machine's Hydrostatic Transmission ECM detects a failure in the park brake or the gear sensing circuits, the system will be deactivated. The system will not be allowed to reactivate until the failures have been resolved.