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Variable reluctance step motors have teeth on the rotor and stator, but no magnet. ORIENTAL MOTOR only manufactures Hybrid stepper motors. There are currently three general types of stepper motors. The load may be a lead screw, a disk, or a conveyor. These are continuously turned on and off to move the motor through its correct sequence.Īll of these components will instruct the motor to move the load. Finally, the power amplifier is the transistor set that allows current to energize the phases. This voltage level is usually in the 24 VDC range but can be much higher. The motor power supply is the supply voltage to power the motor. It depends on the chip set or application design, but most logic supplies are in the 5 volt range. The logic power supply is a low level supply that powers the ICs in the driver. The phases must be energized in a particular sequence, and the logic for phase control takes care of this. The logic for phase control takes the pulses from the indexer and determines which phase of the motor should be energized. The next four boxes make up the motor driver. The form is immaterial, but it must be present for the motor to move.
#MOTOR WINDING SYSTEM GENERATOR#
This could be a separate component like the ORIENTAL MOTOR SG8030 indexer or a pulse generator card that slides into a PLC. It will output the correct number of pulses that motor will move and alters the frequency so the motor will accelerate, run at a speed, and then decelerate. The second portion is the indexer or PLC card.
#MOTOR WINDING SYSTEM PC#
It can be as sophisticated as a PC or PLC or as simple as an operator push button. It might raise an elevator or advance a conveyor. The computer not only control the stepper motor system but will also control the rest of the machine. The first component is the computer or PLC. Each component's performance will have an effect on the others.
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All of these parts must be present in one form or another. The diagram below shows a typical stepper motor based system. For this reason stepper motors are ideal for short, quick moves. They have low rotor inertia that can get up to speed quickly. Stepper motors can respond and accelerate quickly. If the same motor travels one million steps, it will travel 1,800,000° ± 0.05°. When a standard stepper motor travels one step it will go 1.8° ± 0.05°. The remarkable feature of steps motors, though, is that this error does not accumulate from step to step. ORIENTAL MOTOR's standard stepper motors have an accuracy of ± 3 arc minutes (0.05°). Stepper motors are not perfect, there are always some little inaccuracies. One of the most remarkable features of stepper motors is their ability to position very accurately. You merely need to design a circuit to output pulses or use one of ORIENTAL MOTOR's pulse generators.
#MOTOR WINDING SYSTEM DRIVERS#
Most drivers are looking for 5 volt pulses which just so happen to be the voltage level of most integrated circuits. The motor will spin at a rate that is equal to the frequency of those same pulses. The number of pulses the motor turns is equal to the number of pulses fed into the driver. Stepper motors are controlled by a driver, which sends the pulses into the motor causing it to turn. Stepper motors are so named because each pulse of electricity turns the motor one step. Not only does a stepper motor convert electrical power into rotation, but it can be very accurately controlled in terms of how far it will rotate and how fast. Electric motors convert electricity into motion. Stepper motors convert electricity into rotation.