ZF-R Series Intelligent AC Motor Soft Starter

Our intelligent AC motor soft starter is a new type of motor starting equipment designed and produced using power electronics technology, microprocessor technology, and modern control theory, which has the current international advanced level. This product can effectively limit the starting current of asynchronous motors during startup, and can be widely used in loads such as fans, water pumps, conveyors, and compressors. It is an ideal replacement for traditional star/delta conversion, autotransformer voltage reduction, magnetic control voltage reduction, and other voltage reduction starting equipment.

Working Principle

• Voltage Regulation: Gradually increases the motor's input voltage through thyristors (SCRs) or other power electronic devices, allowing the motor to accelerate smoothly from rest.
• Current Limitation: Limits the starting current during the startup process to prevent excessive current from impacting the power grid and motor.
• Frequency Regulation (Optional): Some advanced soft starters incorporate variable frequency technology to further optimize the motor's starting performance by adjusting the power supply frequency.

Main Functions

1. Soft Start and Soft Stop:
   • Soft Start: Gradually increases the voltage from zero to the rated value during startup, reducing starting current and mechanical shock.
   • Soft Stop: Gradually decreases the voltage to zero during shutdown, preventing torque shock from free-running.
2. Multiple Starting Modes:
   • Ramp Voltage Start: The voltage increases gradually at a preset slope.
   • Current Limit Start: The starting current is limited to a set value.
   • Kick Start: Provides instantaneous high torque at the beginning of startup, suitable for heavy-load starting.
   • Pulse Impact Start: Combines pulse current to overcome static friction in specific applications.
3. Protection Functions:
   • Overload Protection: Monitors motor current to prevent overload operation.
   • Overheat Protection: Uses temperature sensors to monitor motor temperature and prevent overheating.
   • Short Circuit Protection: Rapidly cuts off the power supply to prevent short-circuit faults.
   • Undervoltage/Overvoltage Protection: Monitors the power supply voltage to prevent damage to the motor from voltage anomalies.
4. Intelligent Control and Communication:
   • Parameter Setting: Allows setting of startup parameters such as startup time and current limit via the panel or communication interface.
   • Fault Diagnosis: Continuously monitors the operating status of the motor and soft starter, recording fault information.
   • Communication Function: Supports communication protocols such as Modbus and Profibus, enabling remote monitoring and control.
5. Energy-Saving Functions:
   • Reduces motor voltage during light load or no-load conditions to decrease energy consumption.
   • Combines with variable frequency technology to achieve speed regulation of the motor, further improving energy efficiency.

Application Areas

• Industrial Automation: Used to control motors in production lines, enhancing production efficiency and equipment stability.
• Pumping Systems: Enables smooth startup and shutdown of water pumps, extending equipment lifespan.
• Fan Systems: Controls the startup and operation of fans, reducing damage to the fan.
• Wastewater Treatment: Used in wastewater treatment equipment for motor startup and control, improving operational efficiency and stability.
• Mining and Metallurgy: Ensures reliable motor startup and stable operation in harsh environments with high loads, dust, and heat.

Advantages

• Reduced Starting Impact: Smooth startup and shutdown reduce the impact on the power grid and mechanical systems.
• Extended Equipment Lifespan: Reduces motor overload and wear, extending the lifespan of the motor and drive system.
• Improved System Stability: Multiple protection functions ensure the safe operation of the motor and equipment.
• Energy Saving: Reduces energy consumption and improves energy efficiency through soft start and speed regulation functions.
• Intelligent Management: Remote monitoring and control functions facilitate equipment maintenance and management.

Typical Products

• Benshaw Intelligent Soft Starter: Utilizes thyristors as switching elements and modern microcomputer technology to provide a smooth and reliable starting and stopping process. It features detection and protection functions such as phase loss, phase sequence, overheat, startup process overcurrent, and overload, supporting remote centralized automation control.
• CMC-SX Series Chinese Display Intelligent Motor Soft Starter: Based on a 32-bit ARM core microcontroller, it offers comprehensive control functions and multiple protection features, suitable for starting and protecting various asynchronous motors.

Maintenance and Care

• Regular Inspection: Check the appearance, connection terminals, and cooling conditions of the soft starter to ensure no abnormalities.
• Cleaning and Maintenance: Keep the surrounding environment of the equipment clean and regularly clean the equipment surface to prevent dust accumulation from affecting cooling.
• Parameter Calibration: Regularly calibrate the startup parameters to ensure stable performance of the soft starter.
• Timely Repair: Contact professional technicians for inspection and repair when abnormal conditions are detected in the soft starter.

GuangDong Zhufeng Electric Co.,LTD established in 2004, is a national high-tech and energy save enterprise with approval by National Development and Reform Commission. Focusing on the development and production and sale of products of “energy saving and control speed and variable speed” , Zhufeng has been a very good supplier for energy saving and automation control solutions . With it’s own brands: “ACI”,“ZFENG”, Zhufeng has developed DLT series products including vector and universal variable frequency drive, servo system, energy saving cabinet, industrial power saver, soft starter etc. Applications including ceramic, machinery, petrochemical, metal, textile, food, papermaking, cement, water supply, plastic injection, central air-conditioning, smart building,etc.