Installation and use
COMPUTER XP805
21
The version numbering method will then be established.
5.3
Practical example of calculation of parameter “C” to be
programmed
Parameter “C” must be programmed with the number of pulses that the proximity
sensor sends to the Computer every 100 linear metres covered by the machine; you
must therefore calculate how many references pass in front of the sensor in 100
linear metres. In this example, we assume that the proximity sensor is assembled so
as to detect the 4 bolts that secure the wheels of the machine:
1. Place the machine on a flat ground and mark clearly (with a piece of chalk, for
instance) the outer side of the tire in the exact place where it touches the ground
(Figure 8 - ref. <
A
>);
2. Use a point near the mark on the tyre (starting point) as a reference on the
ground, and make the machine move forwards slowly until the wheel has
performed an exact amount of revolutions, in our example 30, then stop the
machine (finish point); to calibrate as accurately as possible, cover at least 50
metres;
3. Measure the distance covered from the starting point to the finish point;
4. Supposing you have measured a distance of 60 metres, by simply calculating 60
metres divided by 30 revolutions the result is that each wheel revolution
corresponds to 2 metres;
5.
Dividing 100 metres (reference distance for parameter “C”) by 2 metres
(circumference of the wheel) the result is that in 100 metres the wheel of the
machine performs 50 revolutions;
6. Now you simply multiply the number of rotations that the
wheel makes in 100
metres
(according to the calculation in our example, 50) by the number of
reference points that the sensor detects with each rotation of the wheel (in our
example, the 4 bolts), which indicates the number of references/pulses that are
detected every 100 linear metres (in our example: 50 x 4 = 200): set this value in
parame
ter “C”.
