Advantech Network Device USB-4761 Manual do Utilizador descarregar pdf (Página 31)

25 Chapter 3

3.3 Isolated Digital Input Connections

3.3.1 Single-ended Channel Connections

USB-4761 has 8 isolated digital input channels. Each of isolated digital

input channel accepts 10~30 V

voltage inputs, and accept bi-direc-

tional input. It means that you can apply positive or negative voltage to an

isolated input pin (Vin ). The figure below shows how to connect an

external input source to one of the card's isolated input channels.

Figure 3.2: Isolated Digital Input Connections

3.4 Relay Connections

After power on, the initial relay output status is shown as below:

Figure 3.3: Relay Output Channel Connections

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