Drive selection memo — 7.5 kW, 18 A, 550 Hz output
The Siemens 6SL3200-6AE21-8BH0 is a G120P variable speed drive in FSB frame size, rated for 7.5 kW power output with 18 A continuous output current at 400 V operating voltage. The 550 Hz maximum output frequency makes it suitable for high-speed spindle or centrifuge applications where standard drives top out at 400 Hz. Overload capacity is 110 % for 57 seconds and 150 % for 3 seconds every 300 seconds — a typical light-to-medium duty cycle that handles pump and fan starts without oversizing the frame. Built-in Filter B (category B for conducted emissions per EN 61800-3) means this drive meets the standard for second-environment (industrial) installations without an external EMC filter in most cases.
Fieldbus slice — multi-protocol communication
The drive ships with Modbus/RTU, RS485/USS, and BACnet MS/TP onboard. PROFIBUS, PROFINET, and CANopen are available as optional add-on modules — the base unit does not include them, so verify the order code for the option slot configuration if your control network is PROFINET-native. Analog I/O count (4 inputs, 2 outputs) and 6 digital inputs provide enough local control for standalone PI loops or remote setpoint override without a fieldbus master.
Lifecycle and compliance planning
Product conformity carries CE, UL, RCM, and EAC marks, covering European, US, Australian, and Eurasian Customs Union installations. The EN 61800-3 standard governs EMC and harmonic performance for adjustable-speed drives.