The 6SL3520-1XK02-2AA0 combines the 1/3-phase wide-voltage input stage with hardwired I/O control in the FSB frame, delivering 2.2 kW at 5.9 A continuous output. As the baseline interface variant in the 1XK02 sub-series, the AA0 suffix provides four digital inputs, one analog input, and a 180 V DC brake output — the control interface that maps most directly to conventional hardwired automation architectures where a PLC handles all logic and the drive executes speed setpoints via discrete signals.

When to choose hardwired I/O over fieldbus control

The drive includes PROFINET and EtherNet/IP ports regardless of the I/O variant — the fieldbus interfaces are always present. The AA0 hardwired I/O variant simply does not rely on them for basic operation. This suits brownfield installations where the existing PLC outputs 0-10 V analog speed references and discrete run/reverse/fault-reset signals. The drive accepts these directly — no gateway, no protocol converter, no network configuration. The commissioning engineer wires the terminal strip, sets the ramp times, and the drive runs. It is the interface of choice when installation speed and electrical simplicity outweigh the diagnostics and flexibility that fieldbus control provides.