SIEMENS

This is the Siemens SINAMICS G120C integrated compact inverter. The complete order number format is 6SL3210-1KExx-xxxx (in the picture, it shows the large power and large housing FS D/E/F size, with a power range of 18.5kW to 132kW).

G120C Complete Machine Diagram
Model Segmentation Explanation
6SL3210: General prefix for the G120C series;
1KE: Represents the G120C integrated model (power module + control unit cannot be separated);
The middle two digits: Represent the rated power (e.g., 1KE23 = 18.5kW, 1KE31 = 45kW);
The last letter: Distinguishes communication interface, filter version (AF1 = Profinet, UB1 = No filter, UP1 = With A-grade filter).
II. Core Function (Frequency Converter Principle)
It is a three-phase AC motor speed control driver, converting factory 380V industrial frequency AC power into adjustable frequency and voltage AC power, thereby precisely controlling the speed and torque of asynchronous motors and achieving energy saving and process control.
III. Main Functions
Continuous speed regulation: Wide range of 0~550Hz speed regulation, replacing traditional pulley and reducer gear position speed regulation;
Energy saving and consumption reduction: For load types such as fans and pumps, speed reduction as needed, compared with direct drive at industrial frequency, energy saving by 20%~50%;
Motor protection: Built-in overcurrent, overvoltage, overload, phase loss, overheating, grounding short circuit protection;
Integrated safety functions: Standard STO safety torque cut-off, meeting equipment safety shutdown specifications;
Industrial communication: Supports Profinet, Profibus, Modbus RTU, and can be connected to PLC/TIA fully integrated automation system;
Simple IO control: Comes with digital input/output, analog input/output, directly connecting sensors, valves, indicators.
IV. Typical Application Scenarios
It belongs to a general compact drive, widely used in general mechanical equipment:
Fluid equipment: Water pumps, circulating fans, air conditioning heating and ventilation, air compressors;
Transportation equipment: Belt conveyors, roller tracks, vertical storage;
Processing machinery: Mixers, extruders, packaging machines, small machine tools;
Building / Municipal: Central air conditioning, water supply booster pumps, exhaust systems.