Belarus 892 - Procedure for Programming the Tachospeedometer of the Dashboard with a Castable Panel; Tachospeedometer Control Console; Programming Procedure for the Electric Tachospeedometer АР70.3813

892-0000010B OM
149
3.14.3 Procedure for programming the tachospeedometer of the dashboard with a castable
panel.
3.14.3.1 Tachospeedometer control console
The control console shown in Figure 3.14. 1 is installed in the dashboard and serves to program the
tachospeedometer (AP70.3813 tachospeedometer or combined indicator KD 8083, whichever is installed) for a
specific model (modification) of the BELARUS tractor.
1 - button to enter the programming mode of the tachospeedometer and to select the pro-
gramming parameter on the display of the tachospeedometer (integrated indicator); 2 - button to
select the value of the encoded parameter shown on the display of the tachospeedometer (integrated
indicator).
Figure 3.14.1 – Control console
3.14.3.2 Programming procedure for the electric tachospeedometer АР70.3813
The programming procedure for the electric tachospeedometer АР70.3813 is as follows:
- remove the cover of the control console;
- press button 1 (Figure 3.14.1) of the control console, while the display of the AP70.3813
tachospeedometer switches to the mode of displaying the parameters of the tractor units;
- several pressing button 1 of the control console ensures a cyclic transition between the
programmable parameters "Z", "R", "D", "T" and again "Z";
- to enter the required value of the selected parameter, it is necessary to press button 2 of
the control console, in this case the fixed values of the parameters “Z”, “D” are cyclically changed.
For the “R” parameter, the value changes from 400 to 950 in 5 mm increments;
- using button 2 of the control console, select the desired value of the selected parameter;
- next pressing button 1 of the control console will switch to the next parameter.
- exit from the programming mode is carried out automatically, provided that there is no press-
ing buttons 1 and 2 for seven seconds. In this case, the new values of the programming parameters
are fixed and will be used by the AP70.3813 tachospeedometer to display the information.
The list of programmable values of the parameters of the АР70.3813 tachospeedometer for
the BELARUS-892/892.2 tractors is given in Table 3.14.1.
Table 3.14.1
Parameter value Parameter
Z parameter
Number of gear teeth at the point of the speed sensor (parameter
for displaying tractor speed)
or
R parameter
R is the rolling radius of the rear wheel, mm. When reprogram-
ming, it is possible to change this parameter with 5 mm incre-
ment
1)
D parameter
Engine type - this parameter takes into account the ratio of the al-
ternator drive from the crankshaft, the ratio of the rear PTO shaft
end (parameter for displaying the engine and the rear PTO
speeds)
Т parameter
Refined elapsed time - this parameter is shown on the display in
the programming mode and cannot be changed. The parameter
provides a refined value (up to 1/10 of an hour) of the engine op-
eration time
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1) 770 – value for tires 18.4R34(F-11), 800 – value for tires 16.9R38. When mounting other types of tires, it is necessary to set
the value of the parameter "R", corresponding to the rolling radius of the tires in accordance with Table 3.9.1.