Thread: 24v Power Conector to from the PDB to the cRIO
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Unread 30-11-2008, 23:41
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Re: 24v Power Conector to from the PDB to the cRIO
Quote:
Originally Posted by Russ Beavis View Post
Why does the PD have 4 terminals (a pair of + and a pair of -)?

Then you might ask "well, why does the cRIO have a + pair and - pair?" According to the datasheets for the cRIO, its internal power supply is designed to be driven by redundant power supplies for extra ruggedness.

Many high-availability/critical applications require multiple power sources for safety/reliability. So... if you need that level of performance, you can include an extra power supply and use both to power the cRIO. The module will use whichever power supply is outputting a higher voltage. If one supply breaks, the other supply will continue to power the cRIO.
To add to Russ' reply... The 4 position plug on the cRIO-FRC is the same that is used on other cRIO's. The FRC has a single-input supply whereas other cRIO's have dual-input supplies. So why have 4? Because its a standard connector. Do you use all 4? Not with the FRC hardware.