Drive selection memo — 6SL3210-1KE18-8AP0
The Siemens 6SL3210-1KE18-8AP0 is a SINAMICS G120C variable-speed drive rated for 4.0 kW output on a 380–480 VAC three-phase supply, with a 150% overload capability sustained for 3 seconds — enough headroom for a pump or fan starting transient without oversizing the frame. It ships with an integrated EMC filter Class A, so it meets conducted-emission limits for industrial environments without an external filter box. The IP20 / UL Open Type enclosure suits panel-mount installations where the drive lives inside a cabinet. Safe Torque Off (STO) is integrated on the power board — no separate safety module needed for the stop function. That keeps the safety circuit wiring inside the drive and frees a slot for other options. PROFIBUS DP is onboard as the fieldbus interface, so this variant does not require a separate communication module. The I/O complement — 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output — covers basic speed reference and feedback for a standalone machine cell.
Panel integration notes
FSA frame dimensions are 196 x 73 x 203 mm (H x W x D). Mounting is via the four corner slots on the backplate. Spring-cage power terminals accept 0.5–6 mm² stranded or ferruled conductors. Strip length is 10 mm for the power block, 8 mm for the control terminals. Torque settings are printed on the drive label.