Siemens SINAMICS G120C 15kW Compact Variable Frequency Drive

USD 785.29

Compact 15kW (LO) / 11kW (HO) VFD for 380-480V 3AC motor control with STO, PROFINET-PN/EtherNet/IP, and IP20 protection. Optimizes industrial processes.

SKU Siemens-6SL3210-1KE23-2UF1 Category
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Siemens SINAMICS G120C 15kW Compact Variable Frequency Drive

Model Identifier SINAMICS G120C
Official Part Number 6SL3210-1KE23-2UF1
GTIN Standard 4042948663998

Technical Overview

Compact 15kW (LO) / 11kW (HO) VFD for 380-480V 3AC motor control with STO, PROFINET-PN/EtherNet/IP, and IP20 protection. Optimizes industrial processes.

Key Features

  • Rated input voltage 380-480 V 3 AC, 47-63 Hz.
  • Rated output power 15.0 kW (LO) / 11.0 kW (HO).
  • Integrated Safe Torque Off (STO) for safety applications.
  • PROFINET-PN and EtherNet/IP communication interfaces.
  • I/O interface: 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output.
  • IP20 / UL Open Type protection rating, suitable for cabinet installation.
  • Compact Frame Size FSC: 295 mm (H) x 140 mm (W) x 205 mm (D).
  • Unfiltered for basic applications.
  • Efficiency η of 0.97.

High-performance motor control with flexible overload capabilities: 15.0 kW (LO) and 11.0 kW (HO) rated power, supporting 150% and 200% overload for short durations, ensuring reliable operation under varying load conditions.

Technical Specification Matrix

ParameterValue
Input Number of Phases3 AC
Input Line Voltage380 ... 480 V +10% -20%
Input Line Frequency47 ... 63 Hz
Input Rated Current (LO)40.60 A
Input Rated Current (HO)36.40 A
Output Number of Phases3 AC
Output Rated Voltage400V IEC / 480V NEC
Output Rated Power (LO)15.00 kW (20.00 hp)
Output Rated Power (HO)11.00 kW (15.00 hp)
Output Rated Current (LO)31.00 A
Output Rated Current (HO)25.00 A
Output Rated Current (IN)32.00 A
Max. Output Current50.00 A
Pulse Frequency4 kHz
Output Frequency (Vector Control)0 ... 240 Hz
Output Frequency (V/f Control)0 ... 550 Hz
Low Overload Capability150 % base load current IL for 3 s, followed by 110 % base load current IL for 57 s in a 300 s cycle time.
High Overload Capability200% base load current IH for 3 s, followed by 150% base load current IH for 57 s in a 300 s cycle time.
Power Factor λ0.70 ... 0.85
Offset Factor cos φ0.95
Efficiency η0.97
Sound Pressure Level (1m)66 dB
Power Loss361.0 W
Filter Class (Integrated)Unfiltered
Communication InterfacePROFINET, EtherNet/IP
Standard Digital Inputs6
Digital Input Switching Level (0→1)11 V
Digital Input Switching Level (1→0)5 V
Max. Digital Input Inrush Current15 mA
Fail-safe Digital Inputs1
Digital Outputs (Relay Changeover Contact)1
Digital Outputs (Transistor)1
Digital Output (Resistive Load)DC 30 V, 0.5 A
Analog / Digital Inputs1 (Differential input)
Analog Input Resolution10 bit
Analog Input Switching Threshold (Digital, 0→1)4 V
Analog Input Switching Threshold (Digital, 1→0)1.6 V
Analog Outputs1 (Non-isolated output)
PTC/ KTY InterfaceYes
Degree of ProtectionIP20 / UL Open Type
Frame SizeFSC
Physical Weight (kg)5.2
Dimensions L x W x H (cm)27 x 36.5 x 16

Industrial Applications

1. Water Pumping Station Motor Control

This converter can precisely control the speed and torque of 15 kW / 11 kW 3-phase AC motors commonly found in municipal or industrial water pumping stations. The ability to vary motor speed (0-550 Hz V/f control, 0-240 Hz vector control) allows for optimized flow rates and pressure regulation, reducing energy consumption and wear on mechanical components. The IP20 rating mandates cabinet installation, which is typical for such environments.

Problem Solved

Traditional fixed-speed pump systems often use throttling valves for flow control, leading to significant energy waste and reduced pump lifespan. This drive allows for variable speed control, directly matching pump output to demand, thus saving energy and extending equipment life. The high overload capability (150% for 3s, 110% for 57s) can handle temporary increases in pump load due to pipeline pressure fluctuations or starting conditions. The integrated STO ensures safe maintenance operations.

Variable Frequency DrivePump ControlEnergy EfficiencyFlow Regulation3-Phase AC MotorIP20Safe Torque Off15 kWPROFINET

2. Conveyor Belt Speed Regulation in Manufacturing

In manufacturing lines, controlling the speed of conveyor belts is crucial for process synchronization and material handling. This 15 kW / 11 kW drive can provide precise speed control for conveyor motors, allowing for smooth acceleration/deceleration and adjustable throughput. The integrated PROFINET-PN communication allows for easy integration into a larger industrial automation system, synchronizing with other production stages. Its compact size (FSC frame) facilitates integration into control cabinets near the production line.

Problem Solved

Inconsistent conveyor speeds can lead to production bottlenecks, product damage, or inefficient material flow. This drive provides accurate and dynamic speed control, ensuring smooth material transport and adaptability to varying production demands. The high starting torque or temporary overload capability (200% for 3s) is beneficial for starting heavy loads on the conveyor or dealing with momentary jams.

Conveyor SystemMotor Speed ControlIndustrial AutomationMaterial Handling15 kWPROFINET-PNIP20Dynamic Control

3. HVAC System Fan Control in Commercial Buildings

For large commercial or industrial HVAC (Heating, Ventilation, Air Conditioning) systems, variable speed control of powerful fans is essential for maintaining optimal air quality and temperature while minimizing energy consumption. This 15 kW / 11 kW converter can drive large ventilation or exhaust fans, allowing for demand-controlled ventilation. Its EtherNet/IP interface enables integration with Building Management Systems (BMS) for centralized control and monitoring.

Problem Solved

Fixed-speed HVAC fans operate at full capacity regardless of actual demand, wasting significant energy and creating unnecessary noise. By using this variable frequency drive, fan speed can be adjusted precisely to match the ventilation requirements, dramatically reducing energy costs and improving occupant comfort. The compact size helps fit within existing equipment rooms or control panels, and the IP20 rating is standard for indoor electrical enclosures.

HVACFan ControlBuilding Management System (BMS)Energy SavingVariable Air Volume (VAV)EtherNet/IP15 kWIP20
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