3110AHS1300 3 Phase Hybrid Stepper Motor

1. Products Overview

Stepper motor is an executive agency that converts electrical pulses into angle displacement. You can control the angle by controlling the number of pulse to achieve the purpose of accurate position control. At the same time, you can control the speed and acceleration of the motor by controlling the input pulse frequency to achieve the purpose of the speed control.

Step motor, also called as pulse motor is normally classified by structural as: reactive step motors (VR), permanent magnet step motor (PM), and hybrid step motor (HB). Step motor can also be divided into rotation and straight lines according to the form of movement. According to whether there is an encoder, can be divided as open-loop and closed-loop step motors.

Reactive step motor: there are windings on the stator and rotor consisting of soft magnetic materials. The structure is simple, the cost is low, the step distance is small, and it can reach 1.2 °, but the dynamic performance is poor, the efficiency is low, the heating is large, and the reliability is difficult to guarantee.

Permanent Magnet step motor: The rotor of the permanent magnet step motor is made of permanent magnet material, and the rotor is the same as that of the stator. It is characterized by good dynamic performance and large output torque, but this motor has poor accuracy and large steps (generally 7.5 ° or 15 °).

Hybrid Step motor: Hybrid steaming motor integrates the advantages of reaction and permanent magnets both. It has a multi-phase windings, permanent magnet material on the rotor, and multiple small teeth on the rotor and stator to improve the step accuracy. It is characterized by large output torque, good dynamic performance, and small steps, which can meet automation applications which have high precision requirement.

According to the quantity of phases, there are two-phase, three-phase, and five-phase step motors. The most popular is the two-phase hybrid step motor, accounting for about 97%of the market share. The reason is that the two-phase step motor is more cost-effective, and also has satisfactory performance due to subdivision or micro stepping function of its drive.

The basic step angle of a two-phase step motor is 1.8 °/step. Matched with a half-step drive, the step angle is reduced to 0.9 °. Matched with a micro stepping driver, the step angle can be subdivided up to 256 times (0.007 ° per micro step), which can meet the requirement of most applications.

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, that is, position error etc. Here, we will analyze some problems and solutions.

Losing pulses when changing direction leads to inaccurate positioning

When changing direction, the pulse is lost, which means that it is accurate in any direction, but as soon as the direction is changed, errors accumulate, and the more times it is changed, the more biased it is.

Solution: Generally, stepper drivers have certain requirements for direction and pulse signals. For example, the direction signal is determined a few microseconds before the first rising or falling edge of the pulse (different drivers have different requirements) arrives. Otherwise, there will be a pulse that runs in the opposite direction of the actual required direction. Finally, the problem will appear as it deviates more and more, with smaller subdivisions becoming more prominent. The main solution is to use software to change the logic of the pulse or add a delay.

The initial speed is too high and the acceleration is too large, which sometimes causes stepping loss.

Solution: Due to the characteristics of the stepper motor, the initial speed should not be too high, especially when the load inertia is large. It is recommended to have the initial speed below 1r/s, so that the impact is small. If the same acceleration is too large, it will also have a large impact on the system, which is simple overshoot

Insufficient motor output torque

Solution: Increase the motor current appropriately, increase the voltage of the progressive driver (pay attention to the optional driver), and choose a motor with higher torque.

Environmental electromagnetic interference causes mis-operation of the controller or driver, resulting in inaccurate positioning.

It is necessary to identify the source of disturbance and reduce its electromagnetic interference on the stepper system, such as increasing spatial distance, using shielded wires for signal lines, and ensuring good grounding of the controller or driver to block communication channels and improve its anti-interference ability.

Solutions:

• Replacing ordinary wires with double shielded wires, the signal lines in the system are separated from wires with high current or high voltage to reduce electromagnetic interference ability.
• Filter out disturbance waves from the power grid using power filters, and add power filters to the input terminals of major electrical equipment under permissible conditions to reduce interference between devices within the system.
• It is best to use photoelectric blocking devices for signal transmission between devices. If conditions permit, pulse and directional signals should be transmitted using differential methods with photoelectric blocking. In rational loads (such as electromagnetic relays, solenoid valves), a resistance capacitance absorption or fast discharge circuit is added at both ends. Rational loads can experience a peak voltage of 10-100 times in the initial moment, if the operating frequency is above 20KHZ.

Kaifull Hybrid Stepper Motors Applications

The application of stepper motors

Mainly used in industries, aerospace, robotics, precision measurement and other fields, such as optoelectronic theodolites for tracking satellites, military instruments, communication and radar equipment, the widespread application of subdivision drive technology makes the phase number of motors not limited by step angle, bringing convenience to product design. At present, in the subdivision drive technology of stepper motors, chopping constant current drive, instrument pulse width modulation drive, and current vector constant amplitude uniform rotation drive control are adopted, greatly improving the operating accuracy of stepper motors and promoting the development of stepper motors in the direction of high-speed and precision in medium and low-power applications.

Kaifull hybrid stepper motors are currently widely used in various automation equipment and instruments such as engraving machines, laser machines, CNC machine tools, textile and clothing machinery, medical equipment, measuring equipment, electronic processing equipment, packaging machinery equipment, etc.

In the field of robotics

In the field of robotics, stepper motors are widely used to control the motion and direction of robot arms. By sending pulse signals on the motor, the robot can easily and accurately pick up or place items.

Printing assembly

In the printing and assembly industry, stepper motors achieve high-quality printing and assembly by controlling the movement of rollers, discs, and other moving parts on the printing machine.

Medical devices

In the field of medical devices, stepper motors are used to control the automated positioning and movement of surgical robots and medical equipment.

3D printing

In 3D printing technology, stepper motors can achieve complex 3D structures and shapes by controlling the movement of the print head.

Industrial automation

In the field of industrial automation, stepper motors are widely used in the control of various equipment, such as engraving machines, laser machines, CNC machine tools, textile and clothing machinery, medical equipment, measuring equipment, electronic processing equipment, packaging machinery and other automation equipment and instruments.

In summary, stepper motors have become an indispensable component in various application fields, helping various devices and machines complete complex actions through their stable motion and precise control.

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