Drive selection memo
The Siemens 6SL3210-1KE14-3UC0 is a SINAMICS G120C variable-frequency drive rated for 1.5 kW output with 150% overload capability for 3 seconds — enough to handle short-duration load spikes on a pump, fan, or small conveyor without oversizing the drive. Input accepts 380-480 VAC three-phase, 47-63 Hz, unfiltered. The integrated CANopen fieldbus and Safe Torque-Off (STO) simplify wiring into a safety-rated control scheme; STO eliminates the need for an external safety contactor on the motor circuit.
What the ratings mean for fit
The 1.5 kW rating at 380-480 VAC three-phase matches a standard 2 HP induction motor on a 400 V line. The 150% overload for 3 seconds covers momentary inrush during acceleration or a jammed load — if your application needs sustained overload beyond 3 seconds, step up to the next frame size. The unfiltered input means the drive does not include an internal EMC filter; for CE-marked installations in a residential or light-industrial environment you may need an external filter on the line side. IP20 / UL Open Type enclosure suits panel-mount installation inside a cabinet with a minimum NEMA 1 or IP54 rated enclosure. The FSA frame size (196 x 73 x 203 mm HxWxD) fits a standard 200 mm deep cabinet; plan for 50 mm clearance above and below for airflow.
I/O and fieldbus integration
The I/O interface provides 6 digital inputs, 2 digital outputs, 1 analog input, and 1 analog output — enough for basic speed reference, start/stop, and fault feedback without an expansion module. CANopen is the integrated fieldbus; for PROFINET or EtherNet/IP you would choose a different G120C variant (order codes ending in different suffixes).