1. Products Overview

Step motor is a motor that converts the electrical pulse signal into the corresponding angle displacement. For each of the pulse signal, the rotor rotates a certain angle accordingly, and the speed is proportional to the input pulses’ frequency. Therefore, step motor is also called pulse motor.

The biggest difference between step motor compared to other control motors is that it receives digital control signals (pulses) and converts into angle displacement accordingly. Enter a pulse signal to get a specified position increment. Compared with the traditional DC control system, such a so-called incremental position control system, the stepper system complexity and cost are significantly reduced. The angular displacement of the stepping motor is strictly proportional to the number of input pulse, and it is synchronized with the pulse in time. Therefore, by controlling the pulse frequency and pulse quantity, the motor shaft speed, and position can be controlled precisely too.

At the same time, Kaifull has solved many problems of traditional stepper drivers buy the latest patented technologies. There are many middle and high end customers globally, and they highly appreciate our stepper motor and drives very much.

Although the stepper motor and its control technology are currently very mature, if not used properly, there may still be a situation of step loss, i.e. position error. Next, we will analyze the common causes and solutions of position errors.

The reasons for the position error of stepper motors

Large load inertia

When the inertia of the load driven by the stepper motor is large, its inertia will generate inertia force, causing the current waveform output by the stepper motor controller to be inconsistent with the actual required current waveform, resulting in inaccurate position of the stepper motor.

The stepper motor driver is not set correctly

Incorrect settings of the stepper motor driver, such as fine fraction, step angle, and other parameter settings, can also lead to an increase in the position error of the stepper motor.

The pulse signal output by the stepper motor controller is unstable

When the pulse signal output by the stepper motor controller is unstable, it can lead to inaccurate position of the stepper motor. This situation is more common when using long-distance transmission of control signals.

The stepper motor is damaged

The rotor or stator of the stepper motor may be damaged, or the bearings may be damaged, which can lead to positional errors in the stepper motor.

Methods to solve the position error of stepper motors

Control load inertia

The position error of the stepper motor can be reduced by reducing the load inertia. For example, when driving a stepper motor with inertia loads, methods such as installing shock absorbers and changing the load inertia mode can be used to reduce the load inertia.

Set the driver parameters correctly

Correctly set the subdivision and step angle parameters of the stepper motor driver to ensure the position accuracy.

Stable output pulse signal

High precision pulse generators or adjustable filters can be used to stabilize the output pulse signal and reduce the position error of stepper motors.

Replace damaged stepper motor components

When the stepper motor is damaged, it is necessary to replace the corresponding components in order to restore the normal operation of the stepper motor.

Target Applications of Kaifull PRMCAS Hybrid Stepper Motors

Machine tools and engraving machines

The application of stepper motors in machine tools is also very common. In machine tools, stepper motors are used to control the feed and tool retraction, thereby achieving precision and speed in machining workpieces. It can achieve different processing effects, high speed, and high efficiency.

Automation equipment

The application of stepper motors in automation equipment is also very extensive. In automation equipment, stepper motors are used to control the position and speed of various moving components, thereby achieving automation control of the equipment. It can achieve different control effects, such as high speed and high stability.

Printing machines

Stepper motors are widely used in printers. In a printer, a stepper motor is used to control the movement of the print head, thereby achieving precise printing of text, images, and charts. It can achieve different printing effects, such as high definition, high speed, and high stability.

Automotive components

The application of stepper motors in automotive components is also very common. In automotive components, stepper motors are used to control the position and speed of car seats, rearview mirrors, windows, and doors, thereby achieving automated control of automotive components. It can achieve different control effects, such as high speed and high reliability.

Optical equipment

In optical equipment, stepper motors are widely used in modulators, fine-tuning, and other aspects. Because the action of stepper motors is very slow and the stepper angle can be adjusted, they are widely used in various optical positioning mechanisms, which can provide higher stability and accuracy for optical equipment.

Medical devices

Stepper motors are widely used in medical devices, especially in surgical instruments such as blades and cutters. The high-precision positioning of stepper motors can significantly improve the accuracy of surgery and make surgery safer. Stepper motors can also be used in devices such as pacemakers and syringes.

Precision positioning applications

Stepper motors can complete precise positioning tasks through quantitative motion and fixed step angles, which makes them widely used in various precision positioning equipment, such as optical equipment, textile equipment, computer embroidery machines, medical equipment, automation equipment, etc. These equipment usually require high-precision and stable positioning machinery, and stepper motors are perfect for such tasks.

In summary, stepper motors can be widely used in various fields due to their characteristics of quantitative motion and fixed stepper angle, providing more precise and efficient driving force for mechanical equipment to achieve higher production efficiency and quality.

2. Hybrid Stepper Motor General Technical Specifications

3. Hybrid Stepper motor Performance Datasheet

4. Mechanical Dimensions (in mm)

5. Wiring Diagram

6. Torque Speed Curves