Siemens 6SL3210-1KE18-8AF1 SINAMICS G120C Inverter 4kW 3AC 400V 8.8A

The 6SL3210-1KE18-8AF1 is a SINAMICS G120C compact frequency inverter from Siemens, providing variable-speed control of three-phase motors. It supplies 4.0 kW rated output power (Low Overload mode) at 400V with an 8.80 A output current, accepting a 3 AC input of 380-480 V. Integrated PROFINET and EtherNet/IP interfaces enable direct connection to industrial automation networks.

Technical specifications:

• MLFB: 6SL3210-1KE18-8AF1
• Manufacturer: Siemens
• Product line: SINAMICS G120C
• Input: 3 AC, 380-480 V (+10%/-20%), 47-63 Hz
• Input rated current: 11.40 A (LO) / 10.60 A (HO)
• Output rated power: 4.00 kW / 5.00 hp (LO) - 3.00 kW / 4.00 hp (HO)
• Output rated current: 8.80 A (LO) / 7.30 A (HO), IN 9.00 A, max 14.60 A
• Output frequency: 0-240 Hz (vector control), 0-550 Hz (V/f control)
• Overload (LO): 150% for 3 s, then 110% for 57 s in 300 s cycle
• Overload (HO): 200% for 3 s, then 150% for 57 s in 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
• Analog output: 1 non-isolated
• Motor temperature sensor: PTC, KTY, Thermo-Click (accuracy +-5 °C)
• Efficiency: 0.97 - efficiency class IE2
• Power loss: 124.0 W - sound pressure level: 52 dB (1 m)
• EMC filter: Class A (integrated)
• Degree of protection: IP20 / UL open type
• Frame size: FSA
• Ambient temperature (operation): -10 to 40 °C
• Installation altitude: up to 1,000 m
• Cooling: air, integrated fan
• Max shielded motor cable: 50 m - unshielded: 100 m
• Dimensions (W x H x D): 73 x 196 x 200 mm
• Net weight: 1.70 kg
• Standards: CE, cUL, UL, KC, EAC, C-Tick (RCM)
• Directives: EMC 2004/108/EC, Low Voltage 2006/95/EC

Features and benefits:

• Integrated PROFINET and EtherNet/IP eliminates the need for an external communications module
• Built-in Class A EMC filter removes the requirement for a separate line filter
• High Overload mode supports 200% current for 3 s, suitable for demanding start cycles
• Multiple closed-loop control modes: V/f linear/square-law/parameterizable, V/f with FCC, V/f ECO, and sensorless vector control
• Fail-safe digital input supports safety-oriented applications without additional hardware
• IE2 efficiency class with 97% efficiency reduces operating energy costs

Applications:

• Variable-speed pump and fan drives in building services and process plants
• Conveyor and material handling systems requiring controlled motor acceleration
• HVAC installations using V/f ECO mode for energy-saving quadratic torque loads
• Industrial machinery integrated into PROFINET-based automation architectures
• Process lines where sensorless vector control delivers precise speed regulation without an encoder

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

Also known as: Siemens 6SL3210-1KE18-8AF1, SINAMICS G120C 4kW inverter, Siemens G120C FSA frequency converter.