Controlling two Relays with NI-9375 Module

[_Tiago_]

Hello Community!

I am new to Labview and NI-Products. I am also not that experienced in electronics, my question is therefore rather basic understanding i guess.

Regarding a project i am working on, i would like to control the current from a power supply via two Solid State Relays. I already have a cDAQ-Chassis with a NI-9375 Module. Is it possible to control the two Solid State Relays (data sheet attached) with just one NI-9375 Module in Labview?

[testproggie · Accepted solution]

For the NI-9375 looking at page 6 - Digital Output Specifications. It states (essentially worse case) that using DSUB and all channels on there is 100mA current maximum on each channel.

For the solid state relay looking at Input Specifications it needs a maximum of 15mA to operate. Note that this particular SSR does not need a current dropping resistor on the input. There are ones that do, so take that into account.

So yes, putting 1 SSR per digital output will work fine in this case.

Robert

[_Tiago_]

Thank you very much for your explanation Robert!