Siemens SINAMICS G120XA 3kW Infrastructure Converter

Technical Overview

3kW 3AC 380-440V infrastructure frequency converter with IP20, integrated USS/Modbus RTU/BACnet MS/TP, and comprehensive I/O for pump and fan control.

Key Features

3.00 kW rated power
3 AC 380-440 V wide voltage input (+10%/-20%)
Rated output current of 7.30 A at 380 V
IP20 protection rating for general industrial environments
Integrated USS, Modbus RTU, and BACnet MS/TP communication
6 Digital Inputs, 4 Digital Outputs, 2 Analog Inputs, 2 Analog Outputs
1 Motor Temperature Sensor input
Compact design with dimensions 232 x 73 x 209 mm (HxWxD)

Technical Specification Matrix

Parameter	Value
Input Voltage	3 AC 380-440 V (+10%/-20%)
Line Frequency	47-63 Hz
Rated Power	3.00 kW
Rated Output Current	7.30 A at 380 V
Protection Class	IP20
Digital Inputs (DI)	6
Digital Outputs (DQ)	4
Analog Inputs (AI)	2
Analog Outputs (AQ)	2
Motor Temperature Sensor Input	1
Integrated Fieldbus	USS, Modbus RTU, BACnet MS/TP
Physical Weight (kg)	3.1
Dimensions L x W x H (cm)	20.9 x 7.3 x 23.2

Industrial Applications

1. Efficient Water Flow Control in Municipal Pumping Stations

This frequency converter can precisely control the speed of a 3.00 kW, 3-phase AC motor driving a pump in municipal water systems or industrial cooling circuits. Its 380-440V input is standard for industrial power grids.

Problem Solved

Optimizes water flow and pressure, reducing energy consumption and wear on mechanical components by matching pump speed to demand, and allows for remote monitoring and control via Modbus RTU in a controlled, non-harsh environment (IP20).

Variable Speed DriveCentrifugal PumpEnergy EfficiencyModbus RTUMotor Control3-Phase Power

2. Optimized Airflow Regulation in Commercial HVAC Systems

Ideal for regulating the speed of 3.00 kW fans in large commercial or industrial HVAC Air Handling Units, where 3-phase 380-440V power is common. Its IP20 rating is suitable for installation within an AHU enclosure or electrical room.

Problem Solved

Enables demand-controlled ventilation, improves indoor air quality, and significantly lowers energy costs by precisely adjusting fan speed to maintain desired airflow and pressure, communicating seamlessly with Building Management Systems (BMS) via BACnet MS/TP.

Fan ControlHVACBuilding AutomationBACnet MS/TPVariable Air Volume (VAV)Energy SavingsMotor Speed Control

3. Precise Speed Control for Material Handling Conveyors

Suitable for driving 3.00 kW motors in conveyor belt systems, common in manufacturing and logistics. The 3 AC 380-440 V input matches typical industrial power supplies.

Problem Solved

Provides accurate speed and torque control for conveyor belts, allowing for smooth acceleration/deceleration, reducing product damage, and improving process synchronization. The multiple digital inputs can be used for start/stop commands, emergency stops, and speed selection from external sensors or control panels.

Conveyor BeltMaterial HandlingVariable Frequency DriveProcess AutomationDigital I/OTorque ControlProduction Line