60
Installation
Fire detection and extinguishing system
All voltage free relay contact can only be connected to SELV circuits.
EN54:
If the control panel default settings are left unchanged,
the RELAY output will result as being configured as a
fault signalling output.
In compliance with regulations the output will also
result “inverted” in order to switch to fault condition
when the system is completely without power.
Therefore, in stand-by status (no faults present on the
system) terminals C and NC will be closed, whereas
terminals C and NO will be open.
4.8
IFAMEVAC internal module wiring
This paragraph illustrates the wiring possible through the IFAMEVAC module, necessary for connection with external
audio sources and microphone bases.
4.8.1 Connection of audio sources (MUSIC 1/2, AUX 1/2)
Cavi:
Shielded Twisted Pair (STP) cable
Non balanced source
To avoid humming caused by ground loops, we recommend using the IAS-ADAPT1000 decoupling module.
Balanced source
2
1
OUT
2
1
RELAY
3
C
NC
NO
2
3
27.6V
inverted
GND
Max. 1Vrms OUT
GND
70V 1V GND
100V
20KHz 1V
GND
FILTER
Max. 1Vrms OUT
IAS-ADAPT1000
Jumper
removed
GND
Max. 1Vrms OUT
