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MEDEA Installation Manual
69
4.7.6
Input wiring diagram
Normally open
Normally closed
Single-balanced
Double-balanced
Triple-balanced
Tandem
Table 30 - Input connection diagrams
NOTE
: If the detector is to be powered, also connect the -V terminal (see example on the side of the
double-balanced powered detector).
IMPORTANT
The INPUT SPECIALISATION functions in the control unit must not be modified to
comply with the EN 50131-3 standard.
IMPORTANT
The inputs must not be programmed as NORMALLY OPEN to comply with EN 50131
standards because in this case they would not be protected against short-circuiting and wire cutting.
IMPORTANT
Unused inputs do not need to be closed because they can be disabled by
programming.
V
V
V
k
V
p
k
k
p
V
k
k
k
p
k
k
k
V
k
k
p
p
k
IMPORTANT
Each detector must be powered by the device that
controls it (control unit, expansion module, keypad or reader).
Balancing resistors must be connected to the positive power supply
of the same device. Connections with different power supplies may
cause false alarms.
V
p
k
k
p
k
k
V
DETECTOR
DETECTOR
DETECTOR
DETECTOR
DETECTOR
DETECTOR
DETECTORS
Содержание MEDEA
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