Drive selection memo — 7.5 kW variable-speed drive for pump and fan duty
The Siemens 6SL3220-3YE24-0UB0 is a SINAMICS G120X drive rated for 7.5 kW at 110% overload for 60 seconds and 100% continuous for 240 seconds, operating on a 380-480 V 3-phase supply with +10/-20% tolerance and 47-63 Hz input frequency. This makes it a fit for centrifugal pump, fan, and compressor loads where the quadratic torque curve matches the drive's standard V/Hz or vector control profile. The drive is unfiltered, so it expects the installation to handle conducted emissions via an external line reactor or filter if the application must meet EN 55011 Class A or B limits — common in European panel builds.
Fieldbus and control integration
Integrated fieldbus includes MODBUS RTU, BACnet MS/TP, and USS protocol on the same RS-485 port — no option card needed for building automation or simple PLC networks. The Intelligent Operator Panel (IOP) is included for local parameterization and diagnostics. No IO expansion module is included in this order code; the base unit provides the standard G120X I/O set (digital inputs, relay output, analog input). If additional I/O or a second fieldbus interface is required, the optional IO expansion module must be ordered separately.
Sourcing and procurement posture
The packaging dimensions (400 x 350 x 195 mm) and unit quantity of 1 piece per package are standard for this frame size FSB drive.