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OYO STEPPER MOTOR

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- at 09:05:31 - Uncategorized RSS Feed | Really Simple Syndication

How to Select a Stepper Motor For Your OEM Pump Solution

How to Select a Stepper Motor For Your OEM Pump Solution

Cole-Parmer is well-known for its high-quality Masterflex® and Ismatec® pump technologies. Many OEMs turn to the Cole-Parmer OEM team when they need a custom pump integrated into equipment they are developing. What needs to be considered when choosing a pump solution is not only the style of the pump but also the type of motor. When deciding on a motor for your OEM pump solution, keep in mind these numerous considerations.

Types of Motors
Of the many different motor types in use today, there are four motor technologies that cover most applications, each with advantages and limitations, all of which should be considered.

Brushed DC / Permanent magnet direct current (PMDC) motors
brushless dc motor and PMDC motors tend to be the favored choice for cost-sensitive applications for many reasons. The initial cost of ownership is generally low. A strong feature-set is useful for many different applications. These motors incorporate internal brushes that translate electrical current to motor movement.


Stepper motors are a type of brushless DC motor, but the motor movement is controlled differently. A stepper motor functions by dividing a full rotation into an equal number of steps. The motor can move to and hold at a specific spot in its rotation via the controlled pulses to internal electromagnets. An encoder or similar feedback mechanism is not needed. Stepper motors offer other advantages too, including long lifetime, little-to-no wear and maintenance, high starting torque, and overall cost, which typically falls between a brushed and brushless DC motor.

However, some significant limitations need to be considered when incorporating stepper motors into an application. One limitation is the change in torque that can be delivered by the motor as the speed changes. While the initial torque is high, the available torque at elevated speeds is considerably lower and can lead to rotational inaccuracies including stalling.

Additionally, some important tangible effects can also limit the use of stepper motors, including acoustic noise (they can “whine” at a high pitch), heat generation due to overall inefficiencies (geared stepper motor nema 16), and mechanical vibration.

While stepper motors are not the favorable choice for continuous operation applications, these motors are an excellent choice for repeated and rapid dispensing applications. They can withstand heavy use without the need for regular maintenance, and offer tight inherent positional and speed control.
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OYO STEPPER MOTOR

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