What are the differences between variable-frequency motors and servo motors

I. Control Accuracy

servo motor ‌ : with encoder, the accuracy can reach 0.036 degrees, as precise as measuring a hair with a vernier caliper.

variable-frequency motor ‌ : The speed stabilization accuracy is approximately 0.5%, which is equivalent to measuring a pencil with a ruler, and the accuracy is much lower.

Ⅱ. Response Speed

servo motor ‌ : 2000 RPM acceleration only takes 20 milliseconds, which is three times faster than the blink of an eye.

Yvariable-frequency motor ‌ : It responds half a step slower and is suitable for equipment such as fans and water pumps that are not in urgent need.

Ⅲ. Power Range

servo motor ‌ : Generally tens of kilowatts, but it has three times the overload capacity, like a weightlifter who can suddenly burst out.

variable-frequency motor ‌ : It can reach several hundred kilowatts, with an overload of only 1.5 times. It's sufficient but don't expect it to work extremely hard.

Iv. Applicable Scenarios

servo motor ‌ : robots, automated production lines, CNC machine tools, precision processing equipment, scenarios that require high precision and high dynamic response.

variable frequency motor ‌ : It is used in ventilation equipment, water pumps, air conditioners, as well as in textile and conveying equipment and other applications with a wide speed regulation range and low response requirements.

V. Price

servo system ‌ : several times more expensive, but also much better in performance.

variable frequency motor ‌ : affordable price, suitable for projects with limited budget and low precision requirements.