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Shihlin SF-G is an AC drive, which is a factory automation product used to control AC motors. The Shihlin SF-G series is a drive that offers dual specifications (heavy duty and light duty), support for a PG card for closed-loop vector control and other specialized application cards. It also offers various control modes, hardware protection design, reinforced PID function, RS-485 interface, and other features.

Shihlin SF-G series is a range of AC drives, which are factory automation products used to control the speed of AC motors. Some of the main features of the SF-G series include:

- Dual specification with Heavy Duty: 150% 60s / Light Duty: 120% 60s, which means that the drive can operate at higher loads for short periods of time without damage.
- Support for PG Card for closed loop vector control; PM Card for injection machine application, and WS01 card for fan and water pump control. This allows the drive to be used in a variety of different applications with specific control requirements.
- Different control modes such as V/F control, general purpose magnetic flux vector control, SVC sensor-less vector control, FOC+PG closed loop vector control, high torque output at low speed, and the best power saving control mode. These modes allow the drive to provide optimal control performance for a wide range of applications.
- Excellent overload current rating of 200%/1s, which ensures that the drive can handle high peak loads without damage.
- Hardware type circuit protection design, which provides protection against short circuits, overvoltage, undervoltage, overcurrent, and more.
- Embedded regeneration brake crystal(22kW or below), which helps to recover energy during deceleration and braking.
- Strengthened PID function, multiple machine(fan/pump) and vacuum control function, which allows for precise control of the motor speed and better performance in multiple-machine systems.
- RS-485 interface, selection between Shihlin protocol/standard Modbus protocol, which enables the drive to communicate with other devices on a network.
- Strengthened speed tracking compensation capability, which helps to maintain the motor speed under varying load conditions.
- Soft PWM function, which helps to reduce motor noise and improve overall efficiency.
- Multiple function pulse output, which provides more control options for different applications.
- Operation panel can be pulled outside, which makes it easier to operate and monitor the drive.

- Shihlin VFD SF-G series user manual (pdf)

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