18
‐
Control
Unit
E6L
/
Rev
6.11
6.
PHOTOCELLS
LED’s
FUNCTIONING
IN
LIGHT
OPERATION
MODE
Figure
6.
Photocell
amplifier
EU2
‐
4
LR=receiver
LT=transmitter
LED
Colour
On
Off
Flashing
slowly
Flashing
continuously
Flashing
quickly
Level
LED
CH1
Green
Beam
1
solid
Beam
1
broken
Tuning
Amplification
at
max
Extraneous
disturbance
Level
LED
CH2
Green
Beam
2
solid
Beam
2
broken
Tuning
Amplification
at
max
Extraneous
disturbance
Operation
voltage
PWR
Green
In
order
Missing
Faulty
amplifier
Faulty
amplifier
Faulty
amplifier
Output
OUT
Yellow
Beams
solid
Beam
broken
or
extraneous
disturbance
Swinging
obstacle
breaks
the
beam
Swinging
obstacle
breaks
the
beam
Swinging
obstacle
breaks
the
beam
•
When
using
two
channels
the
both
transmitters
must
be
on
the
same
side,
see
figure
6.
•
The
receivers
should
be
installed
on
the
shadier
side
so
that
sunlight
does
not
shine
on
them
directly.
•
If
it
is
necessary
to
lengthen
the
cables
of
the
transmitters/receivers
of
the
photocells,
the
cables
of
the
transmitter
are
to
be
lengthened.
The
transmitter/receiver
conductors
should
not
run
inside
the
same
cable
sheath.
If
done,
the
cable
must
be
of
double
‐
protected
type.
The
most
reliable
way
is
to
install
for
all
of
them
their
own
protected
cable.
•
The
alignment
of
the
transmitter
and
the
receiver
is
most
simply
done
by
connecting
a
microammeter
in
series
with
the
receiver
in
the
AC
band.
The
transmitter
and
the
receiver
are
adjusted
so
that
the
current
shown
by
the
meter
is
as
great
as
possible,
thus
indicating
the
optimum
alignment.
•
The
functioning
of
photocell
is
best
tested
by
breaking
for
instance
with
a
hand
the
beam
and
looking
at
the
same
time
if
the
channel
level
LED
goes
out.
When
closing
the
door
must
stop
and
open
when
the
photocell
works.
Green
she
at
h
DARK
channel
LIGHT
Yellow
yel
lo
w
yel
lo
w
bl
ac
k
red
red
channels
12/10