-
c)
Charge control circuit
This
circuit
is
also
less
sensitive to
high
temperatures
than the
power
circuit and
can
therefore be ruined
only
by
increased voltage,
(>+250
V or
-6
V)
or overload on
terminal
L,
or overload
possibly
caused
by:
inductive voltages,
short circuit
or
continuous
higher load
than 3
W,
exchange of
terminal
C
and
L
(4
short circuit),
wrongly
connected banery.
With faulty
charge control
circuit
the charging
indicator light is
eitherpermanently
on oroff. Even with faulty charge control circuit
(e.g.
by overload) the
generatorand
regulator
(power
and
control
circuit) may remain
working
correctly.
6.21)
Instruments
6.2L.1) Rev-counter
An
electric induction
pick-up,
equally shaped
as the
ignition
pick-ups,
will
generate
one
positive
and one
negative impulse
per
revolution
of crankshaft.
A
suitable
tachometer,
0
+
7000 rpm, Aviasport T7K5A, is
provided
from
ROTAX
(pan
no.
966
073). Connection at
pick-up
on ignition
cover.
The
mechanical
drive, optional
in
the
ignition
coverforatachometerturnsclockwise
at
l/4
of the crankshaft speed. For
connection, external thread M I
8
x 1
,5
is
provided.
6.21.2)
Operating time, hour-rncter
Possibly
integrated in
the
mechanical
rev-counrcr,
otherwise an electric hour-meter
connected to AC
orDC supply
may
be used.
Feed
supply 6
-
100
V,6 mA
either AC
orDC.
6.21.3) Monitoring
of cylinder
head
temperature
On the
cylinder
head no. 2
and 3
tapped
holes M I
0 are
provided
for
temperature
pick-
up or warning sensor.
Readings
are taken of the
head material
but
not
of the coolant.
Recommended
temperature
pick-ups:
VDO 323. 80 1/0
1
0/00
I
and
indicator
50 to
1
50o C
VD
O 310.27
4/0821001
or waming
switch 150o
C,
VDO
232.011/ffi51017.
ROTAX.
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