29
USER SETTING
11.1
Speed
Usually the computer calculates the information concerning the speed thanks to pulses received by the sensor installed on the wheel.
If a GPS receiver is directly connected to the Bravo 300S, this menu allows selecting the receiver as alternative source to the wheel sensor, and so
to receive in real time the speed data provided by the GPS.
In this menu carry out all settings to calculate the speed.
Select a
source
Fig. 69
Fig. 70
First of all select the source used by Bravo 300S: setup the submenu
Source
(Fig. 70) and the data concerning the selected option.
Possible options:
> Wheel sensor
: Par. 11.1.1
> GPS
: Par. 11.1.2
11.1.1
Source - Wheel sensor
Fig. 71
> Selected wheel type
: select the type of wheel (3 types available).
> Wheels setting
: set the wheel constant (3 available).
The constant can be inserted with two different procedures (manual or automatic), described below.
> Constant calculation: Manual
It allows to enter the wheel constant value calculated with the suitable formula.
Constant selected for
manual setup
Fig. 72
Take measurements with tyres at the operating
pressure.
Kwheel =
distance traveled (cm)
no. of detection points x wheel rpm
<distance traveled>
distance expressed in cm covered by the wheel along measurement travel.
<no. of measurement points>
number of measurement points
(e.g. magnets, bolts, etc.), mounted on wheel.
<no. of wheel revolutions>
number of wheel revolutions required to travel measurement distance.
The wheel constant can be calculated with a good approximation detecting the distance traveled by the
wheel with the speed sensor.
(The longer the distance traveled, the more accurate the wheel constant calculation).
Select the
Wheel constant 1
,
2
or
3
and enter the calculated value.
> Constant calculation: Automatic
It allows to calculate and save the wheel constant with the formula below:
Constant selected for
automatic calculation
Fig. 73
- Measure a straight path at least 100 m (300 feet) long.
(The longer the distance traveled, the more accurate the wheel constant calculation).
- Select a constant and press
OK
to enter into the automatic setup.
- Set the value of the
Reference distance
to be covered (
a
).
- Select the item
Start counting
and press
OK
to confirm.
- Cover the requested distance: the number of pulses will increase during the path. Stop the tractor at
the end of the distance.
- Press
OK
to stop the counting. The computer will indicate the calculated constant.
Wheel constant has been saved.
Take measurements with tyres at the operating pressure.
This test must be performed on medium-hard terrain; for application to very soft or very
hard terrain, rolling diameter may vary, leading to inaccurate output calculation; when this
is the case, repeat the procedure.
During the test cover the distance with the tank filled up to half capacity with water.
Error: inadequate number of pulses
Alarm displayed during the automatic calculation: repeat the procedure, the calculation is not valid.
Fig. 74
11.1.2
Source - GPS
Fig. 75
The computer receives the speed data from the GPS receiver directly connected to the auxiliary port.
No other settings are necessary.
Par.9.3
Quick reset of
change
Menu item scrolling or
Data increase/decrease
Confirms access to menu
or data change
Quits the menu or
data changes
