2.3
Pocket AL I/O
Installation
Optoinsulated digital inputs
In case you use optoinsulated inputs, it will be necessary to use an external power voltage in
the range b5V and +32Vcc.
Relay outputs
The two Relay outputs of Pocket AL I/O allow the control of the devices that can be enabled and
disabled when a switch is closed (i.e. Light, Alarm, Logic port, etc.).
When connecting your devices, keep into consideration the maximum voltage and the maximum
power: 60Vcc – 1A.
Analog Inputs
Pocket AL I/O supports both active and passive 4-20mA sensors.
Passive Sensors
Pocket AL I/O manages passive sensors that have a maximum power of 12V. Connect the sensor between pins 3 and 4 or between
pins 5 and 6 of the 6 PIN terminal board.
GND
Sensor
Maximum Voltage
12V
4-20mA
+12V
pin
S pin
GND
pin
Active Sensors
Pocket AL I/O manages also active sensors that require a special power.
You can use 1 and 6 GND ground pins present on 20 pins terminal board.
+12V
pin
(+)
(-)
S pin
GND
GND
pin
Sensor
External power
for the sensor
4-20mA
from 5Vcc
to 32 Vcc
OPT1
pin
OPT1
pin
GND
N.A. o N.C.
pin
C
pin
GND
R
led
Rele
12V
