Posts Tagged 'Servo Motor'

Video: DC Motor Type Selection Based on Load Torque & Speed

5 minute YouTube Video

Dr. Urs Kafader, of maxon motor AG, provides a short 5 minute tutorial on DC brushless and brush motor type selection based on load torque & speed.


For more information, please contact:

EDITORIAL CONTACT:
Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

High performance servo motor in a small package

maxon sets new standards in micro drives

maxon’s smallest DC brushless motor is only four millimeters in diameter and comes in two different lengths. Certified in accordance with ISO 13485, the new brushless micro drive is ideal for medical applications.

Maxon EC4 Brushless Gearmotor

Maxon EC4 Brushless Gearmotor

The EC 4 brushless DC motor is maxon motor’s ultra-compact solution to the market’s needs. As the smallest micromotor to come from the Swiss manufacturer, the EC 4 is only four millimeters in diameter. It is available in two lengths, with power ratings of 0.5 and 1 W. Equipped with an ironless maxon winding, the EC 4 stands out for its robust design, high power density, and energy efficiency.

maxon has the matching gearhead

Combined with the GP 4 planetary gearhead, the EC 4 becomes a compact drive for use in micropumps, analytic and diagnostic devices, and laboratory robots. Precise and reliable, it can adjust lenses, dispense fluids, or position sensing devices. All units meet the ISO 13485 medical standard, which makes this maxon micro drive the perfect choice for applications in medical technology.

Additional information and technical data is available by contacting maxon at sales@electromate.com.

For more on maxon’s EC4 brushless servo motor visit http://www.electromate.com/products/?partner=1072297493 .

Tags:  maxon, maxon motors, Electromate, EC4, BLDC motor, brushless motor, servo motor, automation, DC motor

maxon’s new line of dc brushless pancake motors

YouTube 2:44 minute video

Paul McGrath, Maxon USA Sales Engineer, discusses maxon’s new line of dc brushless pancake motors.  These motors feature external rotors and shafts and are available with or without Hall Sensors.  They are ideal for use in robotics applications.

Additional information and technical data is available by contacting sales@electromate.com.

For more on maxon, visit http://www.electromate.com/products/?partner=1072297493 .

Tags:  maxon, maxon motors, Electromate, pancake motor, BLDC motor, brushless motor, servo motor, automation, DC motor

maxon presents new High Torque DC brushless motors

For applications demanding very high torque, drive specialist maxon motor is now launching its EC-i 40 DC brushless motor in a High Torque version.  The iron-core internal rotor drive is available with a diameter of 40 mm and delivers up to 234 mNm of torque.

maxon's new EC-i 40 DC brushless high torque motor

maxon’s new EC-i 40 DC brushless high torque motor

When it comes to powerful movements, maxon delivers with its EC-i 40 High Torque series of DC motors.  The Swiss drive specialist presents three powerful iron-core internal rotor drives.  The drives have a diameter of 40 mm and are equipped with an innovative rotor.  They feature high dynamics, a low cogging torque, and extremely high output torque.  The strongest motor in this series offers a maximum nominal torque of 234 mNm and is 56 millimeters in length.  It exceeds the performance of its precursor model by up to 70 percent.

Especially suitable for robotics

The three new brushless DC motors are cost-effective and ideally suited for applications in robotics, prosthetics, and industrial automation.  The compact design offers a great solution in applications with extreme space constraints.  When needed, the EC-i 40 High Torque motors can be combined with maxon gearheads, servo controllers, or position controllers.  The EC-i 40 series is easily configured and available in our online shop. Shop.maxonmotor.com

Additional information and technical data is available by contacting maxon at sales@electromate.com.

For more on maxon, visit http://www.electromate.com/products/?partner=1072297493 .

Tags:  maxon, maxon motors, Electromate, EC-I 40, BLDC motor, brushless motor, servo motor, automation, DC motor

DC Servo Motors Made-To-Order: The Selection Just Got Bigger

maxon expands its configuration program

maxon motor’s successful X drives program is being expanded to include a new motor size and different planetary gearheads. Putting together the right DC drive assembly online has never been so easy.

maxon’s revoluntary X drives of DC motors and gearheads offer customizable choices that are easily and quickly configured online. They are stronger and more efficient than other drives currently available. The product line is now being expanded to include the DCX 12, a micromotor with a diameter of 12 millimeters to close the gap between the DCX 10 and the DCX 14. It is available with precious metal brushes as well as various options for ironless windings and bearings. The matching planetary gearhead (1–4-stage) is also now available.

New versions of configurable planetary gearheads

maxon expands its online configuration program

maxon expands its online configuration program

What’s more, existing gearhead sizes can now be obtained with several new reduction ratios: GPX 14 (new 3 and 4-stage), GPX 16 (new 4-stage), and GPX 37 (new 1 and 2-stage). The planetary gearheads with the sizes 14, 26, and 37 millimeters are also available in ceramic, reduced-noise-level, and reduced-backlash versions.

All the new products are now available in the online shop. Customers choose the desired motor, the matching winding, brushes, and shaft length, as well as the gearhead and encoder. The order is ready for shipment after just 11 days. You can find more at: xdrives.maxonmotor.com.

Tags:  maxon, maxon motor, Electromate, DCX, Servo Motor, BLDC Motor, Brushless Motor, GPX, ENX

High Efficiency Motors

Reprint of maxon motor USA October 14, 2014 white paper

To understand the concept of high efficiency motors, you must first know how to calculate efficiency and the losses associated with the motor components themselves.

The final measured efficiency of a motor is calculated based only on the elements of the particular application they’re used in.  For the motors themselves, without a load, manufacturers provide ratings based on standard formulas.  To understand high efficiency motors you only need to know what makes them different.

Cutaway of a maxon brush servo motor

Cutaway of a maxon brush servo motor

But first, let’s look at the basic concept used for explaining motor efficiency, which says that efficiency is the ratio between the shaft output power and the electrical input power.  Shaft output can be measured in horsepower or watts. We’ll use watts for the purposes of this article.  The formula most often used is the simple one mentioned above:

ηm = Pout / Pin

where

ηm = motor efficiency
Pout = shaft power out (Watts)
Pin = electric power to the motor (Watts)

Once you’ve used this formula and found your efficiency – and it’s not 100 percent – it’s time to consider the losses that occurred inside the motor.  Motor efficiency drops based on a number of known factors where power is lost as current through the motor is met with a variety of resistances.  These losses can include the wiring and its resistance, iron losses due to magnetic events, and thermal losses.

The electrical power that is lost in the primary rotor and in the secondary stator windings are called resistance losses (or copper losses, because they are based on the characteristics of the wire used including its diameter and length).  Both primary and secondary resistance losses vary with the load in proportion to the current squared. For example:

Pcl = R I2

where

Pcl = stator winding, copper loss (W)
R = resistance (Ω)
I = current (Amp)

Other losses include, iron losses, as mentioned above.  These losses are the result of the amount of magnetic energy dissipated when the motor’s magnetic field is applied to the stator core.  Other factors involved include mechanical losses, which involve the friction in the motor bearings and stray losses, which are basically any remaining losses that are left after the resistance, iron, and mechanical losses are calculated.

The largest culprit for stray losses are the result of harmonic energies that are generated when the motor operates under load.  The load affects the shaft power output, which is why it’s impossible to discuss in a general article such as this.  But basically, these losses are dissipated as currents in the windings, harmonic flux components in the iron parts, and leakage in the laminate core.

High Efficiency Motors

The maxon high efficiency motors get their name because they provide efficiencies in the 90 percentiles as opposed to the 50 to 60 percent range for most motors in their class.

The key to high-efficiency for maxon lies in the fact that they have no iron losses. maxon manufactures ironless core or coreless motors designed to the needs of their customers.  This means that the losses associated with the iron components have been eliminated.  By designing coreless and ironless core motors, maxon also eliminated the largest concentration of stray losses associated with motors, which are losses associated with leakage in the laminate core.

maxon incorporates the use of permanent magnets in their motors.  The ironless core brush motors have a permanent magnet, then a rotating winding, and then the housing, which closes the magnetic path.  With this configuration, there is no electricity going through the core of the motor (through the iron parts) to create a magnetic resonance.

The benefits of the ironless winding provides very specific advantages, which include: there is no magnetic detent and there are minimal electromagnetic interferences.  Part of the efficiency, though, is dictated by the type of magnet used in the design.  For example, the stronger magnets, such as NdFe will offer higher efficiencies.  Add to this, the fact that maxon includes graphite brushes and ball bearings in their brushed motors, customers gain long service life as well as high efficiency.

Click on the link below to view the Maxon Motor Product Family.

http://www.electromate.com/products/?partner=1072297493

EDITORIAL CONTACT:
Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

 

Tags:  high efficiency motor, servo motor, BLDC motor, maxon, maxon motor, Electromate, brush servo motor

Brushless servo motors – more control for valves with linear actuators

Reprint of blog posted by Ryan Klemetson of Tolomatic on Tue, Mar 24, 2015 @ 08:03 AM

Many process industry control engineers are looking to more sophisticated motion control solutions for valve automation. That’s because there’s an ever-growing need to improve productivity, increase efficiency and minimize downtime. It’s essential that engineers be able to control the valves that regulate the flow of materials throughout a facility. Continue reading ‘Brushless servo motors – more control for valves with linear actuators’


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