Flex5/R | © 2021 Inim Electronics S.r.l.
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2.3 Connecting to the I-BUS line
2.3 Connecting to the I-BUS line
The peripheral devices of Inim Electronics control panels are to be connected to the control panel via the I-
BUS.
The connection between the control panel and its peripherals is achieved through a shielded 4 wire (or
more) cable.
Attention!
The shield must be connected to one of the ground terminals (or GND) only on the control
panel side and must follow the entire BUS without being connected to ground in other
points.
The control panel connection is done using terminals ‘
+ D S -
’ on the motherboard.
Sizing
The sizing of the I-BUS line, i.e. the distribution of peripherals and the use of cables to connect them, must
be done on the basis of various project factors, in order to ensure the diffusion of the signals of conductors
‘
D
’ and ‘
S
’ and the power supplied by conductors ‘
+
’ and ‘
-
’.
The factors are:
l
The current consumption of the connected devices.
In the case of insufficient power supply from the BUS line to peripherals and detectors (refer to the
Technical specifications table), this can also be supplied by external power supplies.
l
Cable type
The cable section used affects the dispersion of the conductor signals.
Cable
AF CEI 20-22 II
number of conductors
section (mm2)
I-BUS terminal
4 wire cable + shield
2
0.5
+ -
2
0.22
D S
Recommended cable
