Well, that could be one reason, yes.
I'm not a Logic user, but here are a few things to check...
Do you have signal at the interface's input?
Is the input selected as a signal source for the track?
Is input monitoring turned on for the track?
Is the track armed for recording?
Is the track routed to the master channel (or to a bus that is routed to the master channel)?
Is the master channel routed to an interface output?