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There is a ring pulse divider in the stepper motor driver, as long as the single-chip microcomputer gives the direction signal and pulse signal.
If the "driver" used is not a real driver, but a driver for power amplification, then the pulse distribution needs to be completed by the program of the single-chip microcomputer, and there is no need to provide additional direction signals and pulse signals.
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Generally, the input signal of the stepper motor driver is adapted to the 5V level. If the voltage of the control signal is greater than 5V, an additional current limiting resistor must be applied. As for the size of the applied resistor, it should be explained in the driver documentation.
However, the output signal of control equipment such as PLC is mostly 12V and 24V, and if it is a matching driver, the driver input may have been changed to adapt to the voltage of 12V or 24V. Therefore, if you want to replace an off-the-shelf driver, it is best to find out the voltage of the control signal output by the device first. If you want to control the finished driver with your own equipment, but you don't have the data of the driver, you can try the effect with a low-voltage signal first, such as a 5V signal.
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The stepper motor driver can generally receive 5VDC signals, such as EZM332, EZM442, DM860, etc.; If the control signal is 24VDC, you can choose a driver with a 24VDC signal interface, such as EZM442-24, DM860-24, etc., or connect an external 2K resistor on the signal line of the 5VDC signal driver, which is just more troublesome and not very reliable. There are also drivers on the market that can receive 24VDC or 5VDC signals at the same time, such as EZM552, EZM872, EZS57, etc.
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A stepper motor driver is an actuator that converts electrical impulses into angular displacements. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate at a fixed angle (called the "step angle") in a set direction, and its rotation is to run step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning; At the same time, the speed and acceleration of the motor can be controlled by controlling the pulse frequency, so as to achieve the purpose of speed regulation and positioning.
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Generally, if it is -5V or -24V input, a resistor is added.
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Stepper motor driver impulse voltage: generally -5V, -24V input plus resistance.
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In order for the stepper motor to turn, at least 4 parts are required:
1.Stepper motors.
2.Stepper motor driver The driver must match the type of motor, e.g. a 5-phase driver cannot be used with a 2-phase motor. The stepper motor driver has an output connected to the motor, as well as an input terminal for pulse and direction.
Each input pulse stepper motor runs one step (without subdivision), and the level of the directional input determines the direction of rotation of the motor.
3.Motion control is a device that can emit a series of pulses, which must meet several aspects.
a.The pulse must be from slow to fast, or vice versa, the corresponding motor rotation will also be from slow to fast, or from fast to slow, just like a train accelerating, decelerating, otherwise it will lose step.
The process from slow to fast can be represented by a velocity-time graph, i.e., an acceleration curve, which is very important.
b.The number of pulses is the number of steps the motor is running, so you have to make the emitted pulses run exactly the number of steps you want after completing the entire acceleration-constant speed-deceleration process, which is a bit complicated.
c.If several stepper motors form an interrelated system, such as x-y-z linkage, then you also need to consider interpolation, which cannot be explained in a few sentences.
Commonly used motion control devices are: PLC, motion control card and so on.
4.A power supply with sufficient power is used to provide power to the above devices.
I don't know if I made it clear?
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There is no rule The input signal comes from the PLC output and is directly connected to the motor, and then the subdivision is set to calculate the number of pulses needed. Programming can be powered on and debugged.
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By configuring the appropriate stepper motor driver and power supply, the stepper motor can be rotated. If the stepper motor controller is adopted, the program control can be used to achieve the control of fixed length and fixed angle. The stepper motor driver produced by Hangzhou Zheji Technology Co., Ltd. runs smoothly and has very low noise, which is very suitable for occasions with high torque and high-speed work.
The stepper motor controller has been successfully applied in many aspects, such as CNC machine tools, machining control systems for mechanical parts, etc., and the effect is very good.
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It is a better choice to use TPC4-4TD ** program controller, the meter control adopts the control mode of pulse + direction, which can output the pulse through the Y1 output terminal of the meter control, and the Y2 output direction signal to control the operation of the stepper motor to the driver signal. See the image below
This is a wiring schematic for single-axis step control for reference. The function setting to control the operation of the stepper motor is very simple, you can control the speed, direction, size, plus the induction switch can realize the functions of zero detection, stop in place and so on.
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The output of the single-chip microcomputer can be high and low.
Subdivision is to further refine the step angle on the motor name plate to achieve the purpose of improving positioning accuracy. So your understanding is right. But after the subdivision multiplier exceeds a certain multiple, the drive is made. >>>More
Without connecting any equipment and wires, put the stepper motor. >>>More
The number of subdivisions refers to the actual step angle when the motor is running at a fraction of the basic step angle angle. >>>More
It is also possible that the deceleration time is too fast, and the respawn resistance is insufficient, resulting in damage to the substation module.
A programmable controller (PLC) controls the number and frequency of pulses and the power sequence of each phase winding of the motor, and controls the rotation of the stepper motor. >>>More