VC3000Pro Series Vision Controller User Manual
22
Opto-Isolated Output Wiring
The opto-isolated output of the IO extended module can output NPN or PNP signal. Regarding opto-
isolated output, different output electrical level types correspond to varied voltage ranges.
Note
When the IO extended module's output connects external devices, the voltage range of EXT is from
7 V to 24 V, and the output current of each pin cannot be larger than 40 mA.
●
When the output electrical level type is high electrical level, the voltage range is from EXT-0.3 V
to EXT voltage value.
●
When the output electrical level type is low electrical level, the voltage range is from 0 V to 0.4 V.
Note
●
When the IO extended module's output sends signal to external devices, you need to select
different wirings in accordance with their electrical features and NPN or PNP signal.
●
If the external load is a coil type relay, make sure that there are backward diodes on both sides
of the relay to protect it.
●
You can design circuit diagram for other external devices according to the diagrams below.
External Load
When the IO extended module outputs PNP signal, and connects external load like LED light, relay,
buzzer, etc., its wiring is as follows.
Figure 4-19 PNP Output Connecting External Load
When the IO extended module outputs NPN signal, and connects external load like LED light, relay,
buzzer, etc., its wiring is as follows.
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