Tecnoalarm Tecnofire TFA1-298 Installation Manual page 47

This chapter explains how to connect the detection loop, the sirens and the Master Bus.
N.B. All detectors and modules connectable on the loop are equipped with a dual loop isolator (inbound and outbound),
in compliance with the standard EN 54-2 which provides for an isolator at least every 32 devices.
On the detection loop of the control panel it is possible to connect up to 199 detectors and up to 99 modules.
The detection loop can be connected in open or closed loop mode. In open loop mode, pursuant to the standard EN 54, it is
possible to connect a total of 32 devices (detectors or modules) on each branch of the detection loop.
For loop connection, we recommend to use a shielded 2-poles twisted-pair cable with fl exible conductors, whose minimum section
required is 0.5mm².
For reasons of electrical safety, the shieldings of the cables must be connected in order not to stop their path and must be
grounded inside the casing of the control panel.
The maximum length allowed for the laying of the detection loop is 3000 meters, as defi ned by the low voltage directive
LVD 2006/95/EU.
Detection loop
ALARM
16/02/2019 Access level 1 08:00:00
PREALARM
Fire control panel
TECHNICAL ALARM
GENERAL FAILURE
PWR SPLY FAILURE
Version: 2.0.00 ENG
Control panel working
SYSTEM FAILURE
BATTERY
Level 2 Level 3 Level 4
SIRENS STOPPED
EXCLUSION
SIREN FAIL./EXCL
IP/PSTN FAIL./EXCL..
ZONE IN TEST
SYSTEM MONITORED
MAINS PWR OK
NETWORKED DEVICES
TX CARRIED OUT
L1A L1B
- + - +
Closed loop connection
10 - CONNECTION
10-1 - Detection loop connection
RESET
EVACUATE
ACK
MONITORED
STOP/RESET
SIR.
- + Shield
LOOP IN LOOP OUT
ESC
BACK
+ - Shield
LOOP OUT LOOP IN
- + - Shield -
+ +
LOOP IN LOOP OUT
- + - Shield -
+ +
LOOP OUT LOOP IN
L1A L1B
- + - +
+ - Shield - + - Shield
+
LOOP IN LOOP OUT LOOP IN LOOP OUT
+ - Shield - + - Shield
+
LOOP OUT LOOP IN LOOP OUT LOOP IN
1
LOOP IN+
2
LOOP IN-
3
LOOP OUT+
4
LOOP OUT-
5
TFA1-298
-
+
-
+
47