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SINAMICS G120C Frequency Inverter

The SINAMICS G120C is a compact, integrated low-voltage frequency converter from Siemens, designed for OEMs and general industrial applications. It covers power ranges from 0.55 to 132 kW (three-phase 380–480V) and boasts core advantages such as compact integration, ease of commissioning, high cost-effectiveness, and safety and reliability. It is primarily designed for OEM equipment and general industrial applications, including material handling, packaging machinery, textile printing and dyeing, and small machine tools, and is suitable for space-constrained control cabinet installations.

PRODUCT DETAIL

Core Structure and Working Principle:

 

Hardware Components

 

Power Unit: Diode rectification + DC bus + IGBT inverter, standard input reactor and Class A EMC filter, THDi ≤ 30%; 7 frame sizes, supports side-by-side installation without derating, compatible with compact Siemens control cabinets.

Control Unit: Integrated sensorless vector control, low-speed torque up to 150% of rated torque; I/O includes 6DI/2DO/1AI/1AO, supports PTC motor protection; standard STO safety function, optional extended safety options.

Communication and Operation: Supports Profinet, Ethernet IP, Modbus RTU, etc., compatible with TIA Portal debugging; parameter cloning via BOP-2/IOP-2 panel or SD card, high debugging efficiency for Siemens.

 

Working Principle

 

The AC input is rectified and filtered to DC. The inverter module outputs adjustable frequency/voltage three-phase power via V/F or sensorless vector control. It supports closed-loop speed control (accuracy ±0.2%) and torque control, making it suitable for general machinery with frequent start-stop and speed adjustment. Built-in PID control and energy-saving mode optimize efficiency under light load.

 

Applicable Scenarios:

 

OEM Equipment: Packaging machinery, textile machinery, plastics machinery, printing machinery, small machine tools.

General Industrial Equipment: Material handling equipment, fans and pumps, compressors, mixing equipment, constant pressure water supply.

Automated Production Lines: Production line conveyors, sorting equipment, automated warehousing, robot peripheral drives.

Safety-Related Equipment: Small cranes, lifting platforms, automated parking systems, automatic doors, and other equipment requiring safety linkage.

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+86 13282738912