Assignment And Operation Principle Of Integrated Indicator Pointers - Belarus 3522.5 Operator's Manual

change the mode of showing data entered on the multifunctional display with «Режим»
("Mode") button.
Rules on use of the IICP in the mode of displaying operational parameters and failure
messages on the multifunctional display are given below in subsection 2.7.2 "Assignment
and operation principle of II indicators".
Rules on use of IICP in the II programming mode are given in subsection 3.23.3 "In-
tegrated Indicator programming order".

2.7.2 Assignment and operation principle of Integrated Indicator pointers

2.7.2.1 Velocity gauge 1 (figure 2.7.1) indicates a design speed of the tractor on a
needle indicator. The design speed exceeds the actual one, as tractor skidding is not
taken into account.
The velocity gauge 1 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 indi-
cated 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
readings in accordance with the signal coming from the correct sensor. Specific faults of
circuits and speed sensors when the signals from them are missing are displayed in the
multifunctional indicator as "0" digit, characterizing the fault location – to the right or to the
left (see below).
2.7.2.2 The engine speed gauge 2 (figure 2.7.1) indicates rotation frequency of the
engine crankshaft on a needle indicator.
Information on engine speed comes from the electronic control unit. The range of
speed readings are from 0 to 3500 (rpm).
2.7.2.3 Rear PTO speed gauge 3 (figure 2.7.1) displays the rear PTO speed on a
light indicator.
The rear PTO speed gauge is actuated by signals coming from a pulse speed sen-
sor, installed above the driven gear of the rear PTO reduction unit.
Upon engaging the rear PTO in the mode of "1000 min
operates in the following way:
- the annunciator of "540 min
2.7.1);
- as the speed of the rear PTO shaft end extension reaches 320 min
ment of the rear PTO gauge 9 lights up in combination with the annunciator 6.
- as the speed further increases, together with the annunciator 6 the rear PTO
speed segments light up successively from bottom upward in the following order: 8 – 7 – 5
– 4;
- as the speed of the rear PTO shaft end extension goes up above 750 min
annunciator 6 and segments 9,8,7,5,4 go out. Then the annunciator 10 and a lower seg-
ment 9 light up.
- as the speed further increases, together with the annunciator 10 the rear PTO
speed segments light up successively from bottom upward in the following order: 8 – 7 – 5
– 4;
- then in the process of the rear PTO operation the rear PTO speed is displayed on
the indicator 3 in accordance with the upper lighting segment as per table 2.2.
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" of rear PTO speed scale range 6 lights up (figure
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3522.5-0000010 РЭ
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" the integrated indicator
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a lower seg-
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the