Electrical Connections - Nice IB Instrucciones Y Advertencias Para El Instalador

3.3) Electrical connections

Unit IB has 3 relay outputs: "foto", "foto 1" and "foto 2" with NC (nor-
mally closed) contact prearranged for connection to the corre-
sponding inputs on automation system control units.
If the control unit is not equipped with one or more "foto" inputs the
relative IB output wires must not be used, in this case it is pointless
to install the photocells that would normally interact with these out-
puts.
For connection of bluebus devices use 2x0.5mm
imum length of 20m, and 2x1mm
50m.
6
3.3.1) Description of connections.
The following is a brief description of the electrical connections relative to unit IB.
Table 4: Connections
Wire colour Function
Red,Black 24V ac/dc power supply
Blue,Blue fototest
Grey, Grey "foto" output
White, White "foto1" output
Purple, Purple "foto2" output
3.3.2) Fototest.
Unit IB is equipped with an input for testing the entire detector when
so requested by the control unit, with the scope of attaining safety
category 2 in compliance with EN 954-1
The IB unit fototest input must be connected to the control unit
fototest output; there is no need to observe any particular polarity
(see example in figure 7). If the control unit is not equipped with
fototest or if it is not required, the fototest input must be connected
to the same power supply as IB on the red and black wires (see
example in figure 8).
2 cable up to a max-
2 cable up to a maximum length of
Bluebus cable
(Red, Black)
(Blue,Blue)
(Grey,Grey)
(White,White)
(Purple,purple)
Description.
Power line 18÷28 Vac; 16÷35 Vdc
fototest input (normally active) (NC)
"foto" relay voltage-free contact output (NC)
"foto1" relay voltage-free contact output (NC)
"foto2" relay voltage-free contact output (NC)
24V power supply
fototest input
"foto" relay output (NC)
"foto 1" relay output (NC)
"foto 2" relay output (NC)
GB
5