Installation manual
Installation
69
Connection of devices with alarm, early warning and fault outputs to channels configured as input
The wiring diagram illustrates a connection made to one of the
channels of the IFM4IO module
[A]
, configured as input. The
connected device
[B]
is equipped with a normally-closed fault
signalling output
[C]
, a normally-open alarm signalling output
[D]
and a normally-open early warning signalling output
[E]
.
Connection to channels configured as conventional line
Connection to channels configured as 4-20mA gas input
The wiring diagram illustrates a connection made to one of the
channels of the IFM4IO module
[A]
, configured as gas output
inclusive of a generic device with a 4-20mA output
[B]
powered
from a 24V source
[C]
.
4.16
IFMDIAL internal module wiring
Cables:
Compliant with local regulations in force
Connect the telephone line
[A]
to the PSTN terminals and telephone device or the internal phone line
[B]
to the terminals
on the IFMDIAL module (
[C], paragraph 3.15 - [E]
).
In order to protect the control panel against the discharge of atmospheric electricity, the manufacture strongly advices
the use of the two 150Vrms varistors
[D]
; these varistors must be connected between the grounding terminal
and the
PSTN terminals.
2
1
IN
3K9Ohm
orange, white,
red
B
E
D
C
A
470Ohm
yellow, purple,
brown
1KOhm
brown, black,
red
2
1
IN
3K9Ohm
orange, white, red
S
2
1
IN
24V
470Ohm
yellow, purple,
brown
B
A
C
150Vrms
C
B
A
D
