If you mean to use your keyboard as a MIDI controller, then does it mention MIDI anywhere on the Apogee Duet? If not, you will need to use an interface that supports MIDI as well as Audio.
(MIDI connectors are 5-pin DIN, if that's any help to you in identifying sockets.)
You can usually only use one interface at a time with Logic (although you can create an Aggregate Device to get around this if it is a genuine problem). Therefore if the Apogee Duet is installed you might not be able to use another keyboard simultaneously.
However, there are exceptions, & I'm not familiar with this particular interface, so the best thing is to check the manual.
🙂
Of course, you can still record Audio (in Logic) from your keyboard's audio outputs, assuming that by 'standard analog' you mean 1/4' Jacks…