Speed Radar - Valtra 6000 Workshop Manual

31. Tractor electrical system

Speed radar

The radar is used in AC III, ACIV systems and in ACD ---po-
wer lift, which has a slip control. The radar is the same in
these sys-
tems.
A
A= Dickey ---john radar
B= Vansco---radar.
Supply voltage=9---16 V DC (battery voltage)
Signal= 130 impulses/meter
(Impulses/driving speed=constant). The function principal is
so called Doppler ---effect.
Fitting
C
The radar is fitted so that it points rearwards at an angle of
˚
35 (see picture above).
The ground figure C must be situated so that in this area
there are no moveable points e.g. moveable soil, rotating
wheel etc. E.g. movement of corn stems can cause mal-
functions and also surface of water pool. The size of the
elliptic ground figure is 614 mm x 437 mm, when the height
of the radar from the ground is about 61 cm. In the radar
radiation area there must not be hoses, tractor frame parts
etc).
The metallic parts of the radar bracket must not be in the
side of the radar sensor surface but a little rearwards.
B
35˚
147
Model
6000-- 8950
1. 6. 1999
WARNING! When the radar is functioning, do not stay
in the radar radiation area --- ranger for eyes.
NOTE! After the radar fitting it must be calibrated ac-
cording to instructions:
--- AC III, see page 341/1.
--- AC IV, see page 351/2.
--- ACD ---power lift, see page 321/6.
H=0,6 m
The height of the radar from the ground can be from 60 cm
to 4,8 meter (Dickey ---john) or from 60 cm to 1,2 meter
(Vansco). The recommended height of the radar in Valtra
tractors is about 60 cm.
When fitting the radar the tractor must stand on the level
ground:
--- radar sensor surface must be clean (no oil or other dirt)
--- The radar must not be fitted near a heat source.
--- The radar bracket must be sturdy enough to prevent
vibrations (min. s=8 mm). If the radar shows other di-
gits as zero, when the tractor is stationary, the possible
rearson can be vibrations
--- The tractor frame or metal bracket must not touch the
radar metallic rear part.
Code Page
310 4C