NEMA 52 Three-Phase Hybrid Stepper Motor Specification Datasheet

Description

NEMA 52 Three-Phase Hybrid Stepper Motor Specification Datasheet.

The working principle of a 3-phase hybrid stepper motor is very similar to that of an AC permanent magnet synchronous servo motor.

The permanent magnets used in the rotor of the three-phase hybrid stepper motor are also rare earth permanent magnet materials with high magnetic density characteristics.

NEMA 52 Three-Phase Hybrid Stepper Motor Specification Datasheet

 

NEMA 52 stepper motor three-phase hybrid stepper motor, also known as the 130mm series stepper motor products, is based on the industry’s advanced magnetic circuit design scheme. In terms of material selection, it is made of high-temperature resistant permanent magnets and high-quality cold-rolled steel sheets, Japanese NMB or NSK bearings are selected, and the surface of the motor is sprayed or sealed with aluminum shell.

NEMA 52 130mm Flange High Torque Stepper Motor High torque stepper motor in size NEMA 52 (130 mm) with 1.8° step angle (full step). 1.8°130mm (NEMA52) three-phase hybrid high-torque 130mm stepper motor, step angle 1.8° temperature rise 80°Cmax, ambient temperature -20.

NEMA 52 Three-Phase Hybrid Stepper Motor Specification Datasheet

How to choose the right stepper motor?

1) Selection of stepping motor torque

The holding torque of a stepper motor is similar to what a conventional motor calls “power”. Of course, there is an essential difference.

The physical structure of the stepper motor is completely different from the AC and DC motors, and the output power of the motor is variable. Generally, depending on the amount of torque required (that is, the torque of the animal body to be carried), the type of motor is selected.

Roughly speaking, the torque is below 0.8N.m, choose 20, 28, 35, 39, 42 (the diameter or square degree of the motor body, unit: mm); If the torque is about 1N.m, it is more appropriate to choose a 57 motor.

In the case of torque of several N.m or more, it is necessary to choose a stepper motor with specifications such as 86, 110, 130, etc.

2) Step through the selection of motor speed

Special consideration should also be given to the speed of the motor. Because the output torque of the motor is inversely proportional to the speed.

How three-phase stepper motors work- NEMA 52 Three-Phase Hybrid Stepper Motor Specification Datasheet

 

That is to say, the torque of the stepper motor at low speed (hundreds of revolutions per minute or lower, its output torque is large), and the torque (1000 rpm – 9000 rpm) in the high-speed rotation state is very small.

Of course, some working environments require high-speed motors, and the coil resistance, inductance and other indicators of the stepper motor should be measured.

Choose a motor with a slightly smaller inductance, as a high-speed motor, which can obtain a large output torque. On the contrary, in the case of low speed and strong torque, it is necessary to choose an inductor in the tens or tens of mH, and the resistance should be larger.

3) Selection of no-load starting frequency of stepper motor

The no-load starting frequency of stepper motors, commonly referred to as the “empty starting frequency”. This is an important indicator for purchasing a motor.

If frequent starts, stops are required in an instant, and the speed is around 1000 rpm (or higher), “accelerated start” is usually required.

If direct start is required to achieve high-speed operation, it is best to choose a reactive or permanent magnet motor. The “empty starting frequency” of these motors is relatively high.

4) Phase-number selection of stepper motor

The choice of the number of phases of the stepper motor, this content, many customers pay little attention, mostly casually purchased. In fact, the working effect of motors with different phase numbers is different.

The more phases, the smaller the step angle can be made, and the vibration during operation is relatively small.

In most cases, two-phase motors are used more. In the high-speed and high-torque working environment, it is more practical to choose a three-phase stepper motor.

5) Select for the stepper motor use environment

Special stepper motors can be waterproof and oilproof and used in some special occasions. For example, underwater robots need to discharge water motors. For special-purpose motors, it is necessary to select them accordingly.

6) Special specifications are required according to your actual situation

Special specifications of stepper motors, within the scope of technology permitting, processing orders. For example, the diameter, length, extension direction of the shaft, etc.

7) If necessary, it is best to further communicate and confirm the model with the manufacturer’s technical engineer. 

If necessary, it is best to communicate further with the technical engineer to confirm whether the stepper electromechanical you want to choose can meet the indicators of all aspects you require.

How three-phase stepper motors work:

1, PID control:

 

As a simple and practical control method, PID control has been widely used in stepper motor drives. It forms a control deviation e(t) according to the given value r(t) and the actual output value c(t), and the proportion, integration and differentiation of the deviation form a control quantity through a linear combination to control the controlled object.

Using an integrated position sensor in a two-phase hybrid stepper motor, an autonomously adjustable PI speed controller is designed based on position detector and vector control, which provides satisfactory transient characteristics under variable operating conditions.

nema 52 stepper motor

 

2, adaptive control:

Adaptive control is a branch of the field of automatic control developed in the 50s of the 20th century. It is created to obtain a high-performance controller as the control object becomes more complex, when the dynamic characteristics are unknowable or unpredictable. Its main advantages are easy implementation and fast adaptive speed, which can effectively overcome the influence caused by slow changes in motor model parameters, and is the output signal tracking reference signal.

3 phase stepper motors

3, Vector control:

Vector control is the theoretical basis of modern motor high-performance control, which can improve the torque control performance of motor. It divides the stator current into excitation component and torque component to control it separately through magnetic field orientation, so as to obtain good decoupling characteristics, therefore, vector control needs to control both the amplitude of the stator current and the phase of the current.

Because the stepper motor not only has the main electromagnetic torque, but also the magnetoresistive torque generated by the biconvex structure, and the internal magnetic field structure is complex, the nonlinearity is much more serious than that of the general motor, so its vector control is also more complicated.