Brainboxes IE-780 Technical Information PDF herunterladen (Seite 82)

OPTO DIO Reference Opto IN24

Volt Free Contact Whetting Voltage.________________________________

An on card isolated power supply provides 12 volts at 2

Watts as a whetting voltage source for volt free contacts. This

isolated 12 Volt source, with it isolated ground, can be drawn

out through the edge connector on IDC pins 49 and 50, 50D

pins 17 and 50, when the EXPOWER jumpers are set correctly.

Figure 6-6. Expower Jumpers.__________________________

On board ISO +12V power NOT output via edge connector.

FACTORY SET___________

On board +12V power output via edge connector.

Figure 6-7. Whetting Volt Free Contacts.___________________________________

Using Volt Free Contacts.______________________

Users often need to know whether a switch has been

opened or closed by an operator. Switches, or any other volt free

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Brainboxes IE-780 Technical Information Seite 82