PISO-1730U Card
32-ch Optically Isolated DIO Board (Sink, NPN)
User Manual/ Ver. 1.2/ Jan. 2015/ PMH-0025-11/ Page: 9
2.4
Isolated DIO Architecture
The digital output and digital input (DIO) function supports external power mode. The DIO
various configurations and wiring note is illustrated in the figure below.
2.4.1 Isolated D/I Architecture
Isolated D/I Architecture with external power supply.
R=3K
D in
Vcc
R=10k
DC / DC
PC's
Power
In
Out
(+) Internal
(-) GND Internal
PISO-1730U
D Input (External)
(+) External Power
(-) External GND
Typical Application of D/I with external power supply.
R=3K
D in
Vc
c
R=10k
External source signal
DC / DC
PC's
Power
In
Out
(+) Internal
(-) GND Internal
(-) GND
(+)
External Power Supply
(-) GND
(+) External Power
PISO-1730U
