- The feeder control paddles
- The sonic sensors
Note: The mix height dial must be above the minimum mark or the feeder control system will not operate in automatic mode.
Feeder Control Paddle
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| Illustration 1 | g00588441 |
There are two feeder control paddles. There is one paddle on each side of the machine. The feeder control paddles provide feedback to the electronic control module. The mix height control provides the operational input of the height of material that is desired.
The feeder control paddles should be mounted within one foot of the auger. The angle of the feeder control paddle determines the speed of the drag conveyor and the auger conveyor. The operating range of the feeder control paddle is zero degrees to 45 degrees. Adjust the length of the paddle in order to gain additional material height. Decrease the length of the paddle in order to increase the material height.
Sonic Sensor
The sonic sensor emits sound waves in order to detect the material level in front of the screed. The sound waves bounce off the material and back to the sensor. The sensor measures this time in order to determine the material level. The electronic control module then generates an output signal which controls the proportional valve. The proportional valve adjusts the auger and conveyor speeds in order to maintain the proper level of material.
The sonic sensors should be placed between 30.5 cm (12 inch) to 76 cm (30 inch) from the face of the material. The sensor should be positioned perpendicular to the face of the material for the best results.