1. Product Overview
Step motor is a motor that converts the electrical pulse signal
into the corresponding angle displacement or the line displacement.
It can use the quantity and frequency of the pulse to control the
rotation (rotation angle, rotation speed) in automation
applications. For each of the pulse, the motor rotor rotates a
angle or forward, and its output angle shift or line displacement
is proportional to the input pulse, and the speed is proportional
to the pulse frequency. Therefore, step motor is also called pulse
motor.
In the case of non-overload, the speed of the motor and the stop
position depends only on the frequency and number of the pulsed
input, without being affected by the load change. That is to say,
add a pulse signal to the motor, and the motor turns a step
distance. The advantage of this linear relationship between pulse
and angle rotation, plus that a step motor only has periodic errors
without cumulative errors, make step motor widely used in
automation speed, position and other control fields easily.
With the development of product research and development of
technology, the performance of the step system has been even more
improved. If the stepper system is not overloaded, there will be no
step loss mostly nowadays, and life time very long, almost no need
maintenance, which makes steppers popular and widely used in many
kinds of industrial automation motion control 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, 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.
The Applications of Kaifull PRMCAS Hybrid 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
| Step Angle | 1.8° (2 Phase) |
| Step Angle Accuracy | 0.09° |
| Shaft Type | Single, Dia. 5mm (Customizable) |
| Max. Temperature Rise | Less than 80 °C (Rated Current) |
| Max. Surface Temperatures | Max Allowed 100℃ |
| Ambient Temperature | -20 °C ~ +50 °C |
| Insulation Grade | 100 MΩ Min. , Class B |
| Dielectric Strengt | 500 VAC for 1 Minute |
| Max. Axial Load | 10N |
| Max. Radial Load | 25N (10mm from mounting Surface) |
| Certificates | Rohs, CE, CCC (As per Customer Need) |
3. Hybrid Stepper motor Performance Datasheet
| Model | Current | Resistance | Inductance | Holding Torque | Detent Torque | Rotor Inertia | Bi/Unipolar | Weight | Length |
| A/Ø | Ω/Ø | mH/Ø | N.m | N.cm | g.cm2 | # of Leads | g | mm |
| 42HS089-2304S-59 | 2.3 | 1.6 | 4 | 0.89 | 3.0 | 110 | Bi (4) | 470 | 59.5 |
| 42HS089-1654S-59 | 1.65 | 3.3 | 7.7 | 0.89 | 3.0 | 110 | Bi (4) | 470 | 59.5 |
| 42HS089-1154S-59 | 1.15 | 6.4 | 15 | 0.89 | 3.0 | 110 | Bi (4) | 470 | 59.5 |
| 42HS089-0824S-59 | 0.82 | 12.9 | 30 | 0.89 | 3.0 | 110 | Bi (4) | 470 | 59.5 |
4. Mechanical Dimensions (in mm)
5. Matching Connector with Leads Dimenssions
6. Wiring Diagram
7. Torque Speed Curves
