Indicates how far the conveyor has moved. If itís not working the belt or chain will usually go full speed when in auto . The conveyor speed indicated will be zero and no tonnes will accumulate. If its marginal or intermittent or not adjusted correctly the truck will spread heavy. Often if not set correctly the sensor will work at low speeds and not at high speeds. To check the sensor set the drive to maximum in manual and engage . The computer should indicate a conveyor speed. Now increase the engine revs of the Truck. The conveyor speed should increase with engine revs and be in proportion. i.e., double the engine revs and the conveyor speed should double. If the indicated conveyor speed peaks and then appears to drop off without the conveyor slowing down the sensor is likely to be faulty or too far away from the target.

Indicates how far the truck has moved. If itís not working the conveyor wonít go in Auto or will run for a few seconds and stop. The speed indicated on the computer will not match the truck speed and the hectares will be wrong. To check compare the speed indicated by the computer to the truck Speedo at a very low speed then at 5 kph intervals up to the maximum spreading speed.
If the two sensors check out set the computer rate to spread 1 tonne to the hectare and the spread width to 10 metres then drive 1 km at your usual spreading speed with the spread switch on. (Usually done with an empty bin!) The computer should indicate 1 tonne spread and 1 hectare covered. If not in sync check the air gap, or you may have a faulty sensor
If the sensors test out and this test is OK itís unlikely there is a computer problem.

Indicates the spinner speed. If it fails to work on computer controlled units spinners will usually go full speed. This can cause the spinners to over speed and cause damage, ensure max. current setting on computer is set to avoid this. If it is not set correctly pulse counts can be missed especially at high speed causing to higher spinner speed than what is shown.

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