PISO-1730U Card
32-ch Optically Isolated DIO Board (Sink, NPN)
User Manual/ Ver. 1.2/ Jan. 2015/ PMH-0025-11/ Page: 11
2.4.3 Open Collector Wiring Notice
Low Drive
Channel
R=3.9K
External
Device
External
Power
(+)
(-) GND
R1
I1
D1
DC
10V~30V
+
-
R=10K
O.C.
Out => 2N2222
Sink current
100mA
External Power (+)
External Power (-)
DOn
Diode
PISO-1730U
Open Collector Output Type and Notice!!
High Drive Channel:
Open Collector N-channel Power FET (BPS75N). Max. Sink Current is 500 mA for Each
Channel.
Low Drive Channel:
Open Collector NPN/PNP Transistor. Max. Sink Current is 100 mA for Each Channel.
(Recommend: It is necessary to connect a diode in the external device end as
means of preventing damage form the counter emf . If your external device is
inductive Load , Ex. Relay …)