HeiTel Cam4mobile VG 10s, Быстрое руководство по установке

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HeiTel Digital Video GmbH - Quick Installation Guide Cam4mobile VG
22 Cam4mobile VG
English
Standard swit c hing for c ontrol inputs
The Cam4mobile VG has a large number of control inputs ( Al in , Al a/d ,
Control in1 to Control in4 / Control in10 , Aux in ). 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 Cam4mobile VG 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 Cam4mobile VG 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
Cam4mobile VG
R=10 k
Ω
R=10 k
Ω
Control input
Cam4mobile VG
Normally closed