26 Installation
Fire alarm and extinguishing system
3.4 Connection of detection zones
The Previdia Micro control panel and the PREVIDIA-M-EXP module provide the following terminals for connection to
detection zones:
Cables: 2 wire shielded cable
Proper section (minimum 0.5mm², maximum 2.5 mm²)
Compliant with local laws and regulations in force
Connection of buttons
Connection of contacts with alarm signal
Terminals Fire detection zone Gas detection zone
Previdia
Micro
PREVIDIA-M-
EXP
Buttons Contacts Detectors
Relay
detectors
4-20 mA
L1, ... L4 LINE1, ... LINE8
T1, ... T4
/ /
/
T1, ... T6
/ /
I/O1, I/O2 I/O
/ /
AUX
/ / / / / /
The wiring diagram illustrates a connection made to one of the Lx, Tx
or I/Ox terminals configured as input.
The connected device is equipped with a normally open output for
alarm signalling.
Button
3K9Ohm
orange, white,
red
Button
Lx / Tx / I/Ox
3K9Ohm
orange, white,
red
Lx / Tx / I/Ox
Alarm
330Ohm
orange, orange,
brown
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