National Instruments NI 9478 I/O Protection

NI 9478 Operating Instructions and Specifications 12 ni.com

I/O Protection

The NI 9478 provides protection against overcurrent and

short-circuit conditions.

The NI 9478 provides two configurable current limit thresholds

for the module, Limit A and Limit B. The NI 9478 continuously

monitors the current through each output channel and detects if

the current exceeds either of the current limit thresholds. You can

configure the current limit thresholds and check the current limit

output status in software to determine if the current through each

channel has exceeded the current limit thresholds. Refer to the

software help for more information about configuring current

limits and checking output status. Visit ni.com/info and enter

cseriesdoc for information about C Series documentation.

You can configure each channel on the NI 9478 to disable the

output if the current through the output exceeds either current

limit threshold. This protects the NI 9478 from overcurrent and

short-circuit conditions and provides a way to limit the current

through an external device.