Siemens 6SL3210-1KE21-3UF1 SINAMICS G120C Converter 5.5kW PROFINET

The Siemens 6SL3210-1KE21-3UF1 is a SINAMICS G120C compact frequency converter rated at 5.50 kW (Low Overload) for three-phase 380-480 V AC supply networks. It provides variable speed control of AC motors via PROFINET and EtherNet/IP communication interfaces, with sensorless vector control and multiple V/f control modes integrated in a single compact unit.

Technical specifications:

• MLFB: 6SL3210-1KE21-3UF1
• Manufacturer: Siemens
• Product line: SINAMICS G120C
• Input: 3 AC, 380-480 V (+10% / -20%), 47-63 Hz
• Input rated current: 16.50 A (LO) / 12.80 A (HO)
• Output rated power: 5.50 kW / 7.50 hp (LO), 4.00 kW / 5.00 hp (HO)
• Output rated current: 12.50 A (LO) / 8.80 A (HO), IN 13.00 A, max 17.60 A
• Output frequency: 0-240 Hz (vector control), 0-550 Hz (V/f control)
• Pulse frequency: 4 kHz
• Overload (LO): 150% for 3 s, then 110% for 57 s per 300 s cycle
• Overload (HO): 200% for 3 s, then 150% for 57 s per 300 s cycle
• Communication: PROFINET, EtherNet/IP
• Digital inputs: 6 standard + 1 fail-safe
• Digital outputs: 1 relay changeover + 1 transistor (DC 30 V, 0.5 A each)
• Analog/digital input: 1 differential, 10-bit resolution
• Analog output: 1 non-isolated
• Motor temperature input: PTC, KTY, Thermo-Click (accuracy ±5°C)
• Efficiency: 0.97, efficiency class IE2
• Power loss: 169.0 W
• Filter class: Unfiltered
• Cooling: Integrated fan, air cooled
• Degree of protection: IP20 / UL open type
• Frame size: FSB
• Ambient temperature (operation): -10 to 40°C
• Installation altitude: up to 1,000 m
• Dimensions (W x H x D): 100 x 196 x 203 mm
• Net weight: 2.30 kg
• Standards: CE, cUL, UL, KC, EAC, C-Tick (RCM)

Features and benefits:

• Dual network communication via PROFINET and EtherNet/IP on a single unit
• Integrated fail-safe digital input supports safety-related stop functions without external safety relay
• Sensorless vector control and V/f ECO modes allow optimised energy use across a range of load profiles
• IE2 efficiency class with 97% efficiency reduces operating losses in continuous duty applications
• Compact frame FSB footprint (100 mm wide) simplifies cabinet layout and space planning

Applications:

• Variable speed control of pumps, fans, and compressors using V/f ECO mode
• Conveyor and material handling systems requiring sensorless vector torque control
• PROFINET-networked automation cells in manufacturing environments
• Safety-integrated drive applications where a fail-safe input is required at drive level

Compliant with EMC Directive 2004/108/EC, Low-Voltage Directive 2006/95/EC, and IEC 61800-9-2 converter loss standard. Part of the Siemens SINAMICS G120C range.

Also known as: Siemens 6SL3210-1KE21-3UF1, SINAMICS G120C 5.5kW PROFINET converter, Siemens G120C FSB frequency inverter.