Advantech PCL-734 Manual do Utilizador descarregar pdf (Página 34)

Isolated Digital Input

Each of the 16 isolated digital input channels accept voltages from 5

to 30 V. Every eight input channels share one external common.

(Channels 0 ~ 7 use ECOM0. Channels 8 ~ 15 use ECOM1.) The

following figure shows how to connect an external input source to the

card's isolated inputs.

ECOM

EGND

Isolated

Circuit

Internal

Wet

contact

Dry

Contact

IDI0

IDI1

External

Figure 3-8: Isolated digital input connection

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Advantech PCL-734 Manual do Utilizador Página 34