Systems Features and Basic Operation
Control Panel – Contains the logic of the automatic control system, processing data from the Laser Sensor and, if equipped, switches controlled by the operator.
Valve Assembly – Wired to the Control Panel, the valve meters hydraulic oil to the hydraulic cylinder for depth control.
Control Panel
The complexity of the Control Panel varies from system to system. Refer to the specific brand of system for specific details.
Rotating Laser
The Rotating Laser is the unit that creates the plane of laser light detected by the Laser Sensor. Most Rotating Lasers transmit a focused plane of laser light approximately 1000 ft. (300 meters). They are available in single grade, dual grade, and steep slope versions. They can be quickly and easily aligned to job site requirements without complicated calculation of angles.
A dual slope Rotating Laser can be configured for level, single slope, or dual slope applications. Simply enter the required percent of grade and align the Rotating Laser to the axis (direction) to be graded.
•Percent of Grade. The change in elevation for every 100 feet (30 meters) graded.
•Slope. The change in elevation per foot
(meter).
Never look directly into a laser light or serious injury to the eye may occur. In general, incidental exposure of the laser to the eye will not do damage. However, avoid looking into the beam whenever possible. Use a target for viewing the laser spot.
Use of any laser on a worksite is controlled by OSHA regulations found at 29 CFR 1926.54. Be familiar with these regulations before using any laser beacon used in conjunction with this system. Review and understand all literature provided with the Laser System before operat- ing.
Laser protection devices must be provided to all workers in the area if the laser system exceeds five (5) milliwatts. Refer to the literature provided with the system to determine the power output. If unsure of the strength of the laser system,
Laser Sensor
The Laser Sensor detects the laser light generated by Rotating Lasers. The Laser Sensor sends to the Control Panel the location of the plane of laser light. The Control Panel then has the valve assembly drive the Grading Box's hydraulics accordingly.
The Laser Sensor is mounted on the mast pole directly above the cutting edge of the box.
Cables
Cables connect the various components together into a system. A single cable is provided with “open” wires at one end for attachment to the automatic control system or an electric switch. The other end has a
All cables must be secured with adequate cable length to avoid pinching, stretching and tight bending. Do not clamp cables to pipes or hoses that may generate high heat.