Drive Selection Memo
The Siemens 6SL3210-1KE18-8AB0 is a SINAMICS G120C variable frequency drive rated for 4.0 kW output with 150% overload capability for 3 seconds, operating on 380-480 VAC three-phase, 47-63 Hz. The integrated Class A EMC filter covers the line side for conducted emissions compliance in industrial environments. Safe Torque-Off (STO) is integrated, so no separate safety relay is needed for the drive's safe stop function — the safety CPU can wire directly to the STO terminals.
I/O and Fieldbus
The I/O interface includes 6 digital inputs, 2 digital outputs, 1 analog input, and 1 analog output — enough for basic speed setpoint, start/stop, and feedback without an expansion module. Fieldbus is integrated as USS/MODBUS RTU on the standard RJ45 port; no option card required for Modbus connectivity to a PLC or HMI. The IP20 / UL Open Type enclosure suits cabinet mounting, not washdown environments.