MTZ 1220.3 - Page 26

MTZ 1220.1/1220.3 Section D . Operation controls and instruments
D6
Integrated indicator АР80.3813 (1)
Integrated indicator (hereinafter referred to as II) and control console (hereinafter re-
ferred to as CC) controls operational parameters of systems and assembly units of trac-
tors “MTZ” and deliver data on malfunctions or failures of a system to the operator.
The ID includes indicators
and pilot lights, recording
the following parameters:
1 – Speed indicator
(pointer indicator));
2 – Engine rotational
speed indicator (pointer
indicator);
S1 – Liquid crystal dis-
play, multifunction display
(detailed description and
operation principle; S1
see. below)
S2 – PTO rotations indi-
cator (indicator lamp);
HG1 – Alarm of the overvoltage in the tractor on-board power system (red);
HG2 – Parking break engagement indicating lamp (red);
HG3 – Tractor turn indicator pilot lamp (green);
HG4 – Trailer turn indicator pilot lamp (green);
HG5 – Upper beam switching on indicator (blue);
HG6, HG10 – PTO speed scale segments (yellow);
HG7… HG9 – PTO speed scale segments (green);
HG11, HG12 – PTO speed scale range signaling devices (yellow);
Principle of operation and purpose of indicators on integrated indicator.
1 – speed indicator - shows travel speed of the tractor in graph form.
The indicator is operated by signals from pulse transducers of toothed gears speed of
final drives of tractor’s left and right rear wheels. Speed is indicated by the signal from the