Posts Tagged 'Servo Motor'

A Comparison of DC Linear Actuators with DC Linear Motors

New article from maxon motors

Factory automation and robotic application engineers are often faced with the challenge of requiring fast, accurate and powerful linear actuation within a small allocated volume.  The two most commonly available technologies are rotary DC motor driven actuators and linear DC motor actuators.  This article provides details on the advantages and disadvantages with all technologies. 

Click on the link below to download the article.

http://www.electromate.com/db_support/downloads/Maxon-DC-actuators-vs-DC-motors.pdf

 

Tags:  maxon, maxon motor, maxon DC motor, Electromate, servo motor, BLDC motor, brushless motor, flat motor, pancake motor, automation, electric motor, motion control, linear actuator, linear motor

 

 

Hygienic Servo motors reduce risk of food recall, increase reliability in wash-down environments, & reduce cleaning time

Kollmorgen stainless steel AKMH Motors are designed specifically to address the Food Safety Modernization Act (FSMA); reduce the risk of costly food recalls and provide years of reliable service and minimize machine cleaning time in food, beverage, packaging, medical, pharmaceutical, and converting applications.
The AKMH is designed to meet the toughest hygienic requirements at a time of evoving food safety regulation. As cleaning procedures change AKMH will still an excellent solution.
Kollmorgen AKMH Motor

Kollmorgen AKMH Motor

The AKMH servo motor is constructed to provide long-life and trouble free operation, even with daily exposure to chemical cleaning agents and high-pressure wash-downs.The use of highly corrosion resistant 316L stainless steel along with purposely designed thermoplastic elastomer cable jacket allow both motor and cable to withstand high pressure spray or low pressure hose down without restrictions. An innovative vented cable design prevents ingress of water or cleaning agents into the motor during heating and cooling cycles and extend the life of the motor even in the toughest environments. The AKMH requires no additional protection and can be sanitized without covering or removal from the machine. The AKMH conforms to EHEDG, NSF, BISSC, and 3-A design guidelines.

AKMH motors can be combined with award winning AKD drives to provide complete and optimized systems. AKD drives provide industry leading performance and a single cable design that reduces the number of cables in the wash-down area by 50%. In addition the AKD-N decentralized drive option can further reduce cabling and cabinet size by allowing the drives to be located outside the cabinet in areas adjacent to the wash-down zone. These drive options combined with 19 different motor sizes will provide an optimized solution to almost any motion application.
Key benefits of AKMH clean design
  • Reduces risk of food recall
  • Increases reliability in wash-down applications
  • Reduces cleaning time

Information on the AKMH motors can be found at the link below-

http://www.electromate.com/products/series.php?&series_id=105546

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

Tags:  Kollmorgen, Electromate, AKMH Motor, Washdown Motor, Servo Motor, IP69K, CIP, BLDC Motor, Stainless Steel Motor, Hygienic Servo Motor

 

View a short video on Maxon’s state-of-the-art manufacturing center in Hungary

3 Minute YouTube Video

View a short video on Maxon’s state-of-the-art manufacturing center in Hungary.

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:  maxon, maxon motor, maxon DC motor, Electromate, EC-i40, servo motor, BLDC motor, brushless motor, flat motor, pancake motor, automation, electric motor, motion control

 

 

 

maxon motor takes part in chase to catch up with a comet

After more than ten years of travel through space, the European space probe Rosetta has reached the comet Chury.  Three months from now, for the first time in the history of space travel, a lander will touch down on the surface of the four-kilometer-wide comet.  DC motors manufactured by maxon are part of this pioneering feat.

On August 6th, the big day finally arrived: After a journey of more than ten years, the Rosetta space probe reached the comet 67P/Churyumov-Gerasimenko, known as “Chury”.  The mission team at the European Space Agency (ESA) jumped for joy. F or the first time in the history of space travel, a probe has rendezvoused with a comet.  It will now orbit and map the comet and gather various types of data.  Already, the first images received have yielded astonishing new insights:  The comet Chury, which is four kilometers wide, is not round or oval, but instead looks like two rocks loosely stuck together.  At minus 70°C, the surface is much warmer than expected and the first information indicates that it is covered with a black layer of dust.

First choice for space missions

maxon motor takes part in chase to catch up with a comet – Rosetta Mission

maxon motor takes part in chase to catch up with a comet – Rosetta Mission

Rosetta will now gradually approach the comet, until a distance of only 10 kilometers separates them.  The most difficult part of the mission will take place in mid-November 2014, when the Philae lander is scheduled to touch down on Chury.  It will be the first controlled landing on a comet.  A real pioneering feat – and maxon motor is part of it, with a DC motor on board. This is not the first time that the micro drives from Switzerland have been the first choice for space missions.  SpaceX’s Dragon spacecraft, which transports cargo to the ISS station, also contains maxon motors.  The same holds true for the Mars rovers, which have been diligently traveling across the surface of the red planet for many years.

What is next?

On our Twitter channel @maxonmotor, we will keep you up-to-date with news from the Rosetta mission.

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:  maxon, maxon motor, maxon DC motor, Electromate, EC-i40, servo motor, BLDC motor, brushless motor, flat motor, pancake motor, automation, electric motor, motion control

5 Tips for a Successful Servo Crossover

Reprint of March 27, 2014, article  by Josh Bellefeuille Sales Application Engineer at Kollmorgen

Kollmorgen Servo Motor FamilyThere are a number of situations that call for crossing over and replacing an existing motor with a newer servo.  These can include: product obsolescence, cost savings, lead time issues, or upgrading to newer technology.  The specifics of each application could lead to an endless number of important factors to consider.  In this post I will try to (briefly) identify those that are most common and their correct order of concern.

1. Healthy Motivations

Whatever the reason for a replacement situation, it is important to understand (and never forget!) the most important aspect of the task.  Mitigating risk.  A good replacement is one that minimizes the potential number of issues that may be experienced amidst the upgrade.  If great care is not taken to manage the potential risk of a replacement, a higher potential for system failure will be introduced.

This means cost should not be the controlling factor for replacements! A good replacement is one that minimizes risk AND reduces the cost of a system, versus reducing cost and accepting a higher potential for risk.

2. Axis Stability

Inertia matching is very important and often overlooked.  A servo replacement should have the same rotor inertia as the existing motor, or be as similar as possible.  The goal is to keep the stability of a system consistent when the new servo is introduced.  This of course assumes the existing system already has the desired stability.

If replacing a lower resolution system (i.e. tachometer, commcoder, or older resolver based system) it is often worthwhile to consider a high resolution sine-encoder feedback device, with resolution ≥ 220 counts per revolution (CPR). Doing so will give more flexibility when matching rotor inertias.  As a general rule, when improving feedback resolution with a high resolution device, the servo replacement should have at least one third of the inertia of the existing motor, though it’s preferred to have one half.  This method has been successfully applied in many applications.

3. Speed and Torque

Speed and torque matching is equally as important.  The performance of the replacement motor should meet or exceed the performance of the existing motor.  It is important to review the catalog values of each (i.e. continuous torque, rated speed) to ensure there are no shortcomings.

It is also critical to compare torque values over the entire speed range of each motor.  Comparing graphically may be a helpful exercise.  This can be done by comparing motor speed/torque curves and manually plotting like-values in a spreadsheet.  For example, at 1000 RPM the continuous torque for motor A = X Nm and motor B = Y Nm, and so on for the entire speed range.

4. Motor Dimensions

Though not critical to the performance of the motor, a retrofit situation becomes streamlined if the mounting dimensions of the replacement servo are identical to the existing motor.  The outline drawings of both motors should be reviewed to ensure consistency.  This is good practice even when replacing motors with industry standard mounts, like NEMA or IEC.  Standards typically have consistent pilot and bolt circle dimensions, but often do not maintain the same shaft dimensions.  Though you are replacing a NEMA 34 motor, one manufacturer’s definition may be drastically different than another’s!

5. Other Considerations

Is the motor the only part of the machine being replaced?  Typically a servo replacement will mean replacing the drives, cables, and in rare instances even the controller.  In this case the difference in motor windings can become a secondary consideration assuming manufacturer recommendations are followed.

However careful review is in order if the replacement motor is intended to be used with an existing drive.  Winding data (including motor constants: Kt and Ke), feedback device type and resolution, and cable pin-outs are just a few of the pieces that must be closely examined and matched.  Furthermore, different servo motor manufacturers often utilize different units and commutation methods for these critical parameters.  This can leave a lack of clear distinction between definitions and units of the motors being compared. As a supplementary resource, this helpful article further details some of the common specification inconsistencies that should be considered during a servo replacement.

Other aspects worthy of comparison may include overall envelope size, environmental ratings, holding brakes, bearing and load life, and specials. As hinted at earlier, this short article is in no way meant to serve as a comprehensive “checklist” of crossover guidelines.  Instead, I hope it serves as a high-level starting point for effective servo crossovers, in which risk is carefully considered and managed.

 

Tags:  Servo Motor, BLDC Motor, Electric Motor, Kollmorgen, Electromate, Servo, Automation

Temperature Effects on Motor Performance

When applying DC motors to any type of application, temperature effects need to be considered in order to properly apply the motor.  Performance will change as the motor temperature changes.  When reviewing DC motor curves, the user needs to ask the question “Do these curves represent performance of the motor at room temperature, or do these curves illustrate performance at the maximum rated temperature?”  Depending on the temperature and the required operating point on the motor curve, the performance difference between “cold” and “hot” conditions can be significant.

Click on the link below to download this White Paper.

http://www.engineeringwhitepapers.com/companies/haydon-kerk/temperature-effects-motor-performance/

 

Tags:  Motor Performance, Servo Motor, BLDC Motor, Electric Motor, Temperature Effects

E-book: Motor Selection & Gearbox Matching Tech Tips

In this Tech Tip E-Book, access resources on servo selection, tips for quiet gear motor operation, gearbox matching, basics of motor selection and more on motors.  Included are case studies for automotive and medical applications.  Get motor selection tips, selection tools and resources from Groschopp in this issue.

Click on the link below to download this E-Book.

http://s3.amazonaws.com/2013_pdfs/Groschopp/Groschopp-Tech-Tip.pdf

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

Tags:  Servo Motor, Servo Selection, Gearbox Matching, Motor Selection, Motor Tips, E-Book, Electric Motor, PMDC Motor


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