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www.velmex.com...

Motors and Controls...

Introduction...

There are several types of motors, all fractional horsepower, that are used on Velmex products. Each type has advantages and disadvantages over the other. The most common motor is the DC step motor. Step motors with a controller like the Velmex VXM are the most cost effective solution for accurate speed and precise incremental positioning. The VXM step motor controller provides multi move programmability and up to four axes of motor control. Step motors produce high torque for their size and have useable torque to around 1K RPM. High accuracy and a wide speed range are accomplished without the need for feedback devices like encoders. A variation of the DC step motor is the AC high torque 72 RPM synchronous motor. This motor runs a constant 72 RPM from line voltage with a simple capacitor and direction switch circuit. These motors are used for coarse positioning, they can stop within 5 degrees of rotation....

Motors & Controls...

For simple variable speed, the (Pittman) DC brush geared motor is a low cost solution. Using a variable voltage controller moderate speed range is achievable. Only coarse positioning is possible and speed may fluctuate with load changes. The DC servo motor has the advantage over a step motor of less acoustical noise. The servo motor being a closed loop device has position feedback. Higher cost and the need for a larger motor or gear box are the disadvantages of the servo motor compared to a step motor. When in doubt about what the best motor and control system to use for your application, just contact our sales engineering department for assistance. We have over 30 years experience in motor and control applications, and offer the latest technologies from several manufacturers....

1-800-642-6446...

Motors and Controls Table of Contents...

Motors and Controls...

www.velmex.com...

Table of Contents...

Motors & Controls Introduction to Motors & Controls...

Functional Classifications Some Typical Operating Modes General Motor Characteristics Motor Types Motor Type vs. Series Compatibility 3.4 3.4 3.5 3.6 3.7...

Introduction to Motors & Controls...

Functional Classifications...

The choice of the correct motor and control should be based on the function you wish to accomplish. Broadly speaking, there are two functions scanning and positioning....

Unregulated Speed Control T...

Document Keywords

Motors and Controllers pdf mc motors and controls

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About Velmex, Inc.

We make adjustable positioning Dovetail slides which are mechanical & electromechanical stages for linear and rotary positioning, alignment, indexing, scanning and gauging.

Contact

585-657-6151, 800-642-6446 (toll free)
Fax: 585-657-6153

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