Type / N°
Rev.
Fw
Date
Page
Total pages
EW055.600D
D
4L
6
th
June 2018
34
43
EsiWelma
®
s.r.l.
6.3.
Anomaly signalling device
If a detected anomaly has to be shown in remote, a simple device can be used: it is
connected to the same flat cable used for display and allows to activate a free voltage
contact by whom a lamp or any other signalling device can be supplied.
Le caratteristiche elettriche sono le seguenti:
Max mains 270Vca or 350Vdc
Output voltage depending on the device used:
3A
→ Relay (Standard)
1A
→ Solid State devices (Atex non sparking)
Mechanical specifications:
Photo 7: Anomaly remote signalling device
Fixing method:
DIN rail
Overhall sizes:
90x35x58mm
Weight:
60g
6.4.
I/O expansion device
When the application requires to control non-standard equipment, you can use an expansion
device I/O.
This
is
particularly
effective
in
case
of
personalization for self-service systems in which,
according to current rules, controlling a greater
number of field devices is necessary.
This device can read 6 Inputs and drive 6 Outputs.
Inputs are available on the terminal. The outputs,
open collector type, may be connected to its
implementation through flat cable.
INPUT
OUTPUT
The electrical characteristics are as follows:
Photo 8: I/O expansion device
INPUT
Maximum voltage
+5Vdc
open clamp
Maximum current
1mA
clamp closed at 0V
OUTPUT Maximum voltage
+24Vdc
ad uscita non attiva
Maximum current
10mA
active output
To use the outputs in a dangerous environment, to the I/O expansion device can be
connected through a flat cable a field interface similar to the one described above (Anomaly)
with the following characteristics:
Maximum voltage
270Vca o 350Vdc
Output current
Depending on the device used:
3A
→ Relay (Standard)
1A
→ Solid State Devices
(Atex non sparking)
