Drive selection memo
The Siemens 6SL3210-1KE21-7AP0 is a SINAMICS G120C compact drive rated for 7.5 kW continuous power with a 150% overload capability for 3 seconds — sized for a standard 7.5 kW induction motor on a 380-480 V three-phase supply (47-63 Hz). The integrated Class A EMC filter covers conducted emissions for most industrial environments without an external add-on. Safe-Torque-Off is onboard, so the drive can drop into a safety circuit that needs a controlled stop without a separate safety relay. PROFIBUS DP is the integrated fieldbus; no option card required for that network.
I/O and fieldbus
The I/O interface gives you 6 digital inputs, 2 digital outputs, 1 analog input, and 1 analog output — enough for basic speed reference and run/stop control without an expansion module. The PROFIBUS DP port handles cyclic process data and parameter access; the drive appears as a standard PROFIdrive node on the bus.