You have standardized on PROFINET or EtherNet/IP, and a 22 kW load on a 240 V supply needs to join that network as a standard IO device — with the option to fit external filtering or a brake. The 6SL3230-3YC32-1UF0 lands on the network at 108 A, in the FSE cabinet frame (275×551×239 mm), with DC terminals fitted.

When do the DC terminals actually matter?

They matter when the motor cable is long enough to radiate and breach EMC limits, or when a high-inertia load needs a brake resistor for a controlled stop. The DC terminals accept an external du/dt filter or braking resistor that the 0UF0 variant cannot. For a short-cable pump or fan that freewheels to rest, the 0UF0 is the leaner build — choose the 1UF0 only when the duty cycle forces the extra provision.