Siemens SINAMICS G120C 45kW Variable Frequency Drive

USD 2,235.17

45 kW compact VFD for 380-480V 3AC input, featuring integrated PROFINET/EtherNet/IP and Safe Torque Off. IP20 rated for cabinet mounting.

SKU Siemens-6SL3210-1KE28-4AF1 Category
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Siemens SINAMICS G120C 45kW Variable Frequency Drive

Model Identifier SINAMICS G120C
Official Part Number 6SL3210-1KE28-4AF1
GTIN Standard 4042948673249

Technical Overview

45 kW compact VFD for 380-480V 3AC input, featuring integrated PROFINET/EtherNet/IP and Safe Torque Off. IP20 rated for cabinet mounting.

Key Features

  • Compact design optimized for control-cabinet mounting.
  • 3-phase 380-480 V AC input with a wide voltage tolerance (+10% / -20%).
  • Rated power of 45.0 kW for Low Overload (LO) applications.
  • Overload capability of 150% base load current for 3 seconds, followed by 110% for 57 seconds in a 300-second cycle time (LO).
  • Integrated Class A EMC filter for minimized electromagnetic interference.
  • Equipped with 6 standard digital inputs, 1 fail-safe digital input, 2 digital outputs (1 relay, 1 transistor), 1 analog/digital input, and 1 analog output.
  • Supports both V/f (Voltage/frequency) and sensorless vector control methods.
  • Features an external 24 V power supply capability.
  • High operational efficiency of 98% (η = 0.98).

Integrated PROFINET and EtherNet/IP communication, coupled with Safe Torque Off (STO) functionality, ensures seamless integration into modern automation networks while prioritizing critical safety for connected machinery.

Technical Specification Matrix

ParameterValue
Input Number of Phases3 AC
Line Voltage380 ... 480 V +10 % -20 %
Line Frequency47 ... 63 Hz
Rated Current (LO)76.00 A
Rated Current (HO)69.00 A
Output Number of Phases3 AC
Rated Voltage (Output)400V IEC / 480V NEC
Rated Power (LO)45.00 kW / 50.00 hp
Rated Power (HO)37.00 kW / 40.00 hp
Rated Output Current (LO)82.50 A
Rated Output Current (HO)68.00 A
Max. Output Current136.00 A
Pulse Frequency4 kHz
Output Frequency (Vector Control)0 ... 240 Hz
Output Frequency (V/f Control)0 ... 550 Hz
Power Factor λ0.90 ... 0.95
Offset Factor cos φ0.99
Efficiency η0.98
Sound Pressure Level (1m)72 dB
Power Loss1,410.0 W
Filter Class (integrated)Class A
Communication InterfacesPROFINET, EtherNet/IP
Standard Digital Inputs6
Switching Level DI (0→1)11 V
Switching Level DI (1→0)5 V
Max. Inrush Current DI15 mA
Fail-safe Digital Inputs1
Digital Outputs (Relay changeover contact)1 (DC 30 V, 0.5 A resistive load)
Digital Outputs (Transistor)1 (DC 30 V, 0.5 A resistive load)
Analog / Digital Inputs (Differential)1
Resolution (Analog/Digital Input)10 bit
Switching Threshold ADI (0→1)4 V
Switching Threshold ADI (1→0)1.6 V
Analog Outputs (Non-isolated)1
PTC/KTY InterfaceYes
CoolingAir cooling by integrated fan
Protection TypeIP20 / UL open type
Physical Weight (kg)20
Dimensions L x W x H (cm)49.5 x 35.6 x 30

Industrial Applications

1. Industrial Pumping Systems for Water Treatment

This drive is perfectly suited for controlling medium-to-large pumps in municipal or industrial water treatment facilities, where precise flow regulation and high energy efficiency are paramount. The 45 kW power rating accommodates significant pump capacities.

Problem Solved

Ensures efficient and accurately controlled water flow, thereby reducing energy consumption and minimizing wear on mechanical pump components, particularly crucial under variable demand conditions. The integrated PROFINET/EtherNet/IP communication facilitates seamless integration into plant-wide SCADA systems for comprehensive remote monitoring and control. Additionally, the Safe Torque Off (STO) function provides a critical safety mechanism for maintenance or emergency shutdowns.

Variable Speed DrivePumping SystemsWater TreatmentEnergy EfficiencyPROFINETSTO45 kW380-480V

2. Conveyor Belt Systems in Manufacturing and Logistics

Ideal for powering conveyor belts in automated warehouses, production assembly lines, or various material handling systems, where smooth acceleration and deceleration, precise speed control, and rapid stopping capabilities are critical for product integrity and operational safety.

Problem Solved

Provides precise speed and torque control for conveyor systems, effectively preventing sudden jerks or stops that could lead to product damage or mechanical stress. Its robust overload capability handles temporary high loads without interruption, and the STO function ensures personnel safety during interventions or in the event of jams. Integrated communication simplifies its integration into existing automation architectures.

Conveyor SystemsMaterial HandlingMotor ControlVariable Frequency DriveOverload CapabilitySTOEtherNet/IP45 kW

3. Industrial Fan Control for HVAC and Process Air Applications

Applicable for regulating the speed of large industrial fans utilized in HVAC systems for building ventilation or in process air applications, such as fume extraction and drying processes, within various manufacturing facilities to optimize airflow and energy consumption.

Problem Solved

Dynamically adjusts fan speed to precisely match current airflow requirements, leading to significant energy savings compared to traditional fixed-speed operations or mechanical damper controls. The wide output frequency range (0-550 Hz with V/f control) allows for flexible and efficient fan speed regulation. The IP20 rating ensures its suitability for secure installation within protective electrical control cabinets, a common practice in such industrial environments.

Industrial FansHVACProcess VentilationAirflow ControlEnergy SavingV/f ControlIP2045 kW
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