220
B
A
3480V12
Installation
The maximum length of the interface connection line depends on the absorption of the connected loads, as for the following table
In case of extension of an existing system (for which it is not possible to know the exact
distances, and how many devices are connected to the BUS line the interface must be
connected to), it is necessary to perform the following test, to check that it is suitable
to install the interface:
1 Switch the system to maintenance mode
2 Connect the interface to the load to power
3 Measure the BUS voltage at the extremities of the interface
4 If the voltage exceeds 25 V, installation is possible
5 If the voltage is below 25 V, a dedicated cable must be connected to the interface.
Siren
4072A
Siren
4072L
Power supply
E46ADCN
Interface
Interface
Power supply
E47ADCN
Absorption of the loads connected to the interfaces Maximum distance
A B
50 mA
175 (*)
175
100 mA
(2 interfaces with maximum load on the same line)
150 mA
(3 interfaces with maximum load on the same line)
150 (
*)
200 mA
(4 interfaces with maximum load on the same line)
Note (*): this conguration requires the use of 2 sirens, item 4072L.
12 v contact interface
MQ00480-b-EN 24/04/2014
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