952.5-0000010 OM
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2.8 Integrated indicator
2.8.1 General information
The integrated indicator 16 (figure 2.1.1) (hereinafter II) and the integrated indicator control
panel 18 (figure 2.1.1) (hereinafter IICP) display information on operational parameters of
systems and units of the tractor and provide operator with data on violation of work or
breakdown of any system.
The II includes gauges and signal lamps as per figure 2.8.1.
1 – velocity gauge (needle indicator);
2 – engine speed gauge (needle indicator);
3 –PTO speed gauge (light indicator);
3.1, 3.5 – segments of PTO speed scale (yellow color);
3.2, 3.3, 3.4 – segments of PTO speed scale (green color);
4.1, 4.2– annunciator of PTO speed scale range (yellow color);
5 – pilot lamp to indicate headlights upper beam switching (blue color);
6 – pilot lamp to indicate switching of trailer turn blinkers (green color);
7 – pilot lamp to indicate switching of tractor turn blinkers (green color);
8 – pilot lamp to indicate parking brake engagement (red color);
9 – pilot lamp to indicate enhanced voltage in on-board system (red color);
10 – pilot lamp to indicate low level of coolant (yellow color);
11 – multifunction display.
Figure 2.8.1– Integrated indicator
2.8.2 Assignment and operation principle of integrated indicator gauges
а
) Velocity gauge 1 (figure 2.8.1) indicates a design speed of the tractor on a needle in-
dicator. The design speed exceeds the actual one, as tractor skidding is not taken into ac-
count.
The gauge is actuated by signals coming from pulse sensors of rotation frequency of
toothed gears of final drives of right and left rear wheels. The speed is indicated in accordance
with the signal from the sensor installed on the final drive gear of the wheel, turning with a less
speed.
In case one of the speed sensors is faulty the integrated indicator shows speed read-
ings in accordance with the signal coming from the correct sensor. Specific faults of circuits or
speed sensors when the signals from them are missing are displayed in liquid crystal display
as “0” digit, characterizing the fault location – to the right or to the left (see below).
b) The engine speed gauge 2 (figure 2.8.1) indicates rotation frequency of the engine
crankshaft on a needle indicator.
Information on engine speed on tractor BELARUS-952.5 comes from the electronic
control unit. The range of speed readings is from 0 to 3500 (rpm).
