Performance Characteristics:
- High Control Precision: By adopting high – performance vector control technology, Siemens Frequency Converter has a wide speed – regulation range and an accuracy of up to 0.01%. This enables high – precision speed and torque control, meeting the demands of various complex industrial control scenarios.
- Good Output Characteristics: Siemens Frequency Converter features high – torque output at low speeds and excellent dynamic characteristics. It can provide sufficient torque at low frequencies, ensuring stable operation of the motor even at low speeds. Meanwhile, it responds rapidly during acceleration and deceleration, improving production efficiency.
- Strong Overload Capacity: For example, the MicroMaster440 frequency converter has an overload capacity of 200% of the rated load current for 3 seconds and 150% of the rated load current for 60 seconds. It can withstand large load variations in a short time, avoiding frequent tripping due to overload and ensuring the continuous operation of equipment.
- Rich and Diverse Functions: It has a variety of control functions, such as linear v/f control, square v/f control, programmable multi – point set v/f control, flux – current control without speed measurement vector control, closed – loop vector control, closed – loop torque control, energy – saving control mode, etc. It also has a built – in PID controller, which can achieve precise control of physical quantities such as pressure, flow rate, and temperature. Moreover, the parameter self – tuning function facilitates users’ debugging and operation.
Common Models and Application Fields：
- MicroMaster440: It is a multi – functional standard frequency converter, suitable for general – purpose drives in various industrial fields, such as machine tools, textile machinery, printing machinery, packaging machinery, etc. The power range is 200V – 240V±10%, single – phase/three – phase, AC, 0.12kW – 45kW; 380V – 480V±10%, three – phase, AC, 0.37kW – 250kW.
- MicroMaster430: It is an expert for variable – torque loads of fans and pumps. It is mainly applied to occasions with variable – torque loads like fans and water pumps, such as central air – conditioning systems, sewage treatment systems, water supply systems, etc. The power range is 380V – 480V±10%, three – phase, AC, 7.5kW – 250kW.
- MicroMaster420: It is a multi – functional frequency converter with modular design, suitable for some occasions where the requirements for control functions are relatively simple, such as small conveyor belts, simple machine tools, etc. The power range is 200V – 240V±10%, single – phase/three – phase, AC, 0.12kW – 5.5kW; 380V – 480V±10%, three – phase, AC, 0.37kW – 11kW.
- SINAMICS S120: It is a flexible and modular drive system. It can be applied to various hoisting machinery. The book – type, built – in – cabinet – type and cabinet – type modules can provide a power range from 1.6KW to 4500KW. It is suitable for high – performance drive occasions in various industrial automation fields, such as complex production equipment in industries like steel, papermaking, and chemical fiber.
