Connecting The Digital Output - National Instruments ISM-7400 User Manual

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Connecting the Digital Output

The NI ISM-7400 has a digital output labeled OUT. This output closes to signal a fault condition.

Use this output to drive LEDs, relays, and the inputs of other electronic devices like PLCs. The

positive collector and negative emitter terminals of the output transistor are available at the

connector. This allows you to configure the output for current sourcing or sinking.

Diagrams of each type of connection follow.

Caution

output terminal must not exceed 80 mA

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Figure 13. Internal Circuit Diagram

Do not connect the output to more than 30 VDC. The current through the

Figure 14. Sinking Output

Figure 15. Sourcing Output

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