Drive Selection Memo — 6SL3220-3YE28-0UB0
The Siemens 6SL3220-3YE28-0UB0 is a SINAMICS G120X variable frequency drive rated for 15 kW at 110% overload for 60 seconds (100% for 240 seconds), fed from a 380-480 V 3-phase supply at 47-63 Hz. This is the unfiltered variant, so plan for external line reactors or filters if the installation requires harmonic mitigation or meets a strict THD limit. The drive ships with an Intelligent Operator Panel (IOP) for local setup and diagnostics. Fieldbus is integrated on-board — MODBUS RTU and BACnet MS/TP are standard, no option card needed. There is no IO expansion module included; the base unit covers the built-in I/O for start/stop and speed reference. Ambient temperature range is -20 to +45 °C, and the enclosure is IP20 / UL open type. Frame size is FSC. The painting class is 3C2, suitable for industrial environments with moderate corrosive exposure.
Integration Notes
Mount the drive in a clean, dry enclosure with adequate clearance for airflow — the FSC frame dissipates heat through the base heatsink. The IP20 rating means it is not suitable for washdown or outdoor placement without additional enclosure protection. For MODBUS RTU wiring, terminate the bus at both ends with 120 Ω resistors. BACnet MS/TP follows the same RS-485 physical layer; set the baud rate and MAC address via the IOP or the SINAMICS G120X Smart Access web server. The packaging dimensions are 435 x 250 x 340 mm — factor that into your shipping and kitting process.