Control
Unit
E6L
/
Rev
6.11
‐
13
The
electronic
safety
edge
is
used
when
there
is
no
test
pulse
from
the
safety
edge
when
the
door
is
closed,
e.g.
sliding
and
folding
doors.
To
control
the
condition,
the
electronic
safety
edge
requires
a
separate
monitoring
unit
SEM2
which
is
in
‐
stalled
using
connector
X18
on
the
left
edge
of
the
E6
‐
2L
board.
In
addition
to
the
monitoring
unit,
the
control
system’s
own
safety
edge
testing
can
be
used.
If
the
electronic
safety
edge
emits
a
pulse
when
it
touches
the
floor
or
the
equivalent,
the
door’s
control
system
will
test
the
pulse
from
the
safety
edge.
In
this
way,
the
safety
edge
operation
is
double
‐
monitored.
If
the
electronic
safety
edge
is
not
used,
the
pins
of
the
terminal,
J3
,
next
to
the
socket
must
be
short
circuited
with
a
plug.
8,2k
Ω
1%
When
there
is
only
one
electronic
safety
edge
in
use,
the
other
must
be
replaced
with
8.2k
Ω
1%
resistor
Safety
Edge
X18
Figure
3.
SEM2.
Connection
of
electronic
safety
edge.
Since
SEM2
has
2
channels,
it
can
be
used
for
the
indication
of
one
or
two
electronic
safety
edges’
obstacle
recognition
and
the
malfunction
indication
for
the
safety
edge
or
its
cabling.
The
sensors
connected
to
SEM2
must
have
an
8.2
k
Ω
terminal
resistor.
With
the
help
of
the
idle
current
that
runs
through
the
terminal
resistor,
the
SEM2
can
indicate
a
possible
sensor
circuit
disconnection
or
malfunction.
Always
make
sure
that
the
terminal
resistor
is
installed
on
the
final
end
of
the
safety
edge.
You
can
also
connect
several
safety
edges
in
series
but
the
last
safety
edge
in
the
series
must
be
connected
with
an
8.2
k
Ω
terminal
resistor.
When
connecting
safety
edges,
please
note
that
the
circuit
resistance
of
the
used
cables
must
be
no
more
than
100
Ω
.
SEM2
has
two
separate,
identical
supervising
circuits
for
monitoring
safety
edge
status.
Both
circuits
monitor
both
safety
edges.
If
one
supervising
circuit
breaks
a
single
or
several
components,
the
other
circuit
can
indicate
the
obstacle
recogni
‐
tion
or
malfunction
of
both
safety
edges.
When
the
SEM2
monitoring
unit
is
used
for
only
one
electronic
safety
edge,
the
other
safety
edge
must
be
connected
with
an
8.2
k
Ω
1
%
resistor.
In
normal
deliveries,
the
resistor
is
ready
‐
connected
with
both
connectors
and
the
single
safety
edge
is
connected
in
accordance
with
the
figure.
If
there
is
only
one
safety
edge,
SEM2
monitors
it
using
both
supervising
circuits.
When
the
amplifier
unit
is
connected
to
the
supply
voltage
and
safety
edges
and
their
cabling
is
undamaged,
no
LEDs
will
be
on
in
the
monitoring
unit
and
the
circuit
of
the
control
unit
will
be
unbroken.
Only
the
H47
LED,
indicating
an
unbroken
cir
‐
cuit,
will
be
switched
on
in
the
door’s
board,
E6
‐
2L.
When
the
safety
edge
meets
an
obstacle
or
the
resistance
of
the
edge
circuit
drops,
the
yellow
LEDs,
H1
and
H3
,
will
turn
on
in
the
monitoring
unit,
the
control
system’s
circuit
will
disconnect
and
the
LED,
H47,
will
switch
off.
If
the
safety
edge
circuit
is
disconnected
or
its
resistance
increases,
the
red
LEDs,
H2
and
H4
,
will
switch
on
in
the
monitoring
unit,
the
control
system’s
circuit
will
disconnect
and
the
LED,
H47,
will
switch
off.
If
only
one
of
the
LEDs,
H1,
H2,
H3
or
H4,
is
switched
on
this
means
that
there
is
a
monitoring
unit
malfunction,
the
control
system’s
circuit
will
disconnect
and
the
LED,
H47,
will
switch
off.
In
such
a
case,
the
monitoring
unit
must
be
replaced.