Application Scenarios of Soft Starters

I. Application Scenarios of Soft Starters

1. Fans and Pumps

Application Scenarios: Air conditioning systems, water supply systems, drainage systems, ventilation systems, etc.

Function: Soft starters effectively control the starting process of fans and pumps, avoiding excessive current and mechanical shock during sudden starts. This reduces motor wear, extends equipment life, and avoids impact on the power grid.

2. Conveyor Belts and Conveying Systems

Application Scenarios: Material conveying lines, ore transportation, product processing, etc.

Function: During the starting process of heavy-duty equipment such as conveyor belts, soft starters control the starting current and starting torque of the motor, avoiding excessive impact during sudden starts and reducing damage to the transmission system.

3. Air Conditioning Systems

Application Scenarios: Air conditioning compressors, cooling systems, etc.

Function: When starting an air conditioning compressor, a soft starter reduces the starting current of the motor, avoiding excessive load on the power grid during startup and extending the motor’s lifespan.

4. Wind Turbines

Application Scenarios: Wind turbine generator sets.

**Functions:** Soft starters help wind turbine generators start smoothly, avoiding starting shocks at low wind speeds and ensuring safe and stable operation.

5. Refrigeration and Freezing Equipment
**Application Scenarios:** Refrigeration units, cold storage warehouses, food processing, etc.

Functions:** Soft starters ensure smooth startup of refrigeration compressors in these devices, avoiding current surges during startup and reducing the risk of overload on refrigeration equipment.

6. Iron and Steel Metallurgy and Heavy Machinery
**Application Scenarios:** Metallurgical equipment, rolling mills, heavy-duty pump systems, etc.

Functions:** In metallurgical equipment and heavy machinery, soft starters help motors start smoothly, reducing mechanical and current shocks and preventing equipment damage due to overload during startup.

7. Agricultural Irrigation Systems
**Application Scenarios:** Large-scale agricultural irrigation systems, sprinkler irrigation equipment, etc.

Functions: In irrigation systems, soft starters control the starting process of water pump motors, reducing the impact on the power grid and equipment, and ensuring long-term stable operation.

8. Paper and Textile Industry

Application Scenarios: Pulp machines, textile machinery, looms, etc.

Function: Equipment in these industries requires smooth starting. Soft starters help motors start smoothly, reducing mechanical shock and improving production efficiency.

9. Compressors and Air-Cooled Equipment

Application Scenarios: Air compressors, vacuum pumps, etc.

Function: Soft starters reduce the load on motors when starting these devices, preventing damage from excessive current and overload during startup.

10. Mining Equipment

Application Scenarios: Ore extraction, mine conveying systems, etc.

Function: Soft starters smoothly control the startup process of mining equipment, avoiding excessive shock during motor startup and ensuring long-term stable operation of mining equipment.

II. Application Scenarios Where Soft Starters Cannot Be Used

1. Elevators and Hoists

Application Scenarios: Elevators, hoists, freight elevators, etc.

2. Lifting Equipment

Application Scenarios: Cranes, bridge cranes, tower cranes, etc.

Soft starters are not suitable for equipment requiring emergency braking, such as elevators, hoists, and lifting equipment. While soft starters achieve smooth starting by gradually increasing the control voltage, they lack the ability to control the stopping process and cannot provide the smooth stopping and emergency stop control offered by frequency converters. Therefore, frequency converters are a better choice in these applications because they not only provide smooth starting but also control the deceleration process, ensuring a smooth and safe shutdown.