Installation manual
General Description 13
2.3 Fire Extinction
Some models of Previdia Micro control panel allow the management of a gas-extinguishing channel.
Complies with EN12094-1 and provides the inputs, outputs and control logic required by these systems.
The following figure shows a flowchart of the operations carried out by the control panel in the pre-extinction phase,
that is, from the occurrence of the events that trigger the extinction phase to the start of the release condition, and
during the release of fire extinguishing gas:
9, 10
+ L1 -
/
Fire detection zone
Gas detection zone
Input connection terminals
11, 12
+ L2 -
/
13, 14
+ L3 -
/
15, 16
+ L4-
/
17, 18, 19, 20
T1, T2, T3, T4
100 mA @ 27.6V
Fire detection zone
Gas detection zone
Input connection terminals
Output connection terminals
21
GND
/ Earth terminal
22, 23
+ I/O1 -
1A @ 27.6V Fire detection zone
Gas detection zone
Input/Output connection terminals24, 25
+ I/O2 -
1A @ 27.6V
26, 27
+ AUX -
1A @ 27.6V Input/Output connection terminals
28, 29, 30
NO, C, NC
5A @ 30V Free voltage relay
LED Colour On solid Flashing
Extinction channel
activation LED
Red Discharge activated
Pre-extinction condition
running
Automatic activation
indicator LED
Red
Automatic discharge
command activated
Automatic discharge
command partially activated
Bypass automatic
activation LED
Yellow
The automatic discharge
command has been bypassed
/
Bypass extinction
channel LED
Yellow Channel bypassed /
Manual stop extinction
LED
Yellow
Lock extinction command
activated
Fault on stop-extinction circuit
Stop extinction LED
from non-electrical-
devices
Yellow
Lock extinction command
activated
Fault on stop-extinction circuit
Output connection terminals
number name maximum current: function