The 3ADT218521S0232: The converter provides 3 analog inputs and 2 analog outputs, which covers the typical speed reference and torque/current feedback loop for a DC drive. It's designed for 50 Hz line frequency. The auxiliary terminals carry an IP00 rating per IEC 60529 and IEC 60947-1 — meaning they are not protected against solid objects or moisture, so the cabinet must provide the environmental seal. Operating humidity range is 5 to 95% RH, non-condensing.
Sound level is specified at 66 to 70 dB(A). That's audible in a control room — plan for a separate drive room or enclosure attenuation if the converter is near operator stations.