HeiTel
Digital
Video
GmbH
-
Quick
Installation
Guide
CamDisc VG 2s
CamDisc VG 2s
19
English
Standard swit
c
hing for
c
ontrol inputs
The
CamDisc VG 2s
has
a
large
number
of
control
inputs
(
Al in
,
Al a/d
,
Control in1
,
Control in2
,
Aux in1
).
However
these
inputs
are
not
galvanically
isolated
from
the
operating
voltage
of
the
device.
Depending
on
the
configuration,
these
can
be
activated
by
"Normally
closed"
or
"Normally
opened"
contacts.
Wiring variants for voltage-monitored
c
ontrol inputs
In
addition
to
standard
wiring
of
control
inputs,
the
CamDisc VG 2s
permits
different
types
of
voltage
monitoring.
Normally terminated (10k)
The
wiring
variant
Normally
terminated (10k)
allows
different
circuitry
for
"Normally
opened"
and
"Normally
closed".
For
circuitry
with
a
resistance,
a
distinction
is
made
between
two
different
states:
■
Not triggered
:
The
figures
show
the
safe
state
in
each
case
(not
triggered)
of
the
detector
line
or
the
control
input
for
the
variants
"Normally
opended"
and
"Normally
closed".
■
Camera alarm
:
If
the
"Normally
opened"
or
"Normally
closed"
contact
is
operated,
depending
on
the
type
of
circuit,
a
camera
alarm
is
activated.
Manipulations
of
the
detector
line
such
as
interruption
or
short
circuit
cause
triggering
as
soon
as
the
CamDisc VG 2s
no
longer
measures
the
predefined
control
resistance
of
10 kOhm
(±40%).
The
control
inputs
must
always
be
activated
such
that
they
are
potential-
free
!
Input
c
ir
c
uits of
c
ontrol inputs
0V
U
b
(5V)
Circuit
external
internal
Activation with
“Normally closed”
1.5
k
Ω
0V
U
b
(5V)
Circuit
external
internal
Activation with
“Normally opened”
1.5
k
Ω
Normally opened
Control input
CamDisc VG 2s
R=10 k
Ω
R=10 k
Ω
Control input
CamDisc VG 2s
Normally closed
Summary of Contents for CamDisc VG 2s
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