ConvertingQuarterly.com > Blogs > Drives for Web Handling

20

Remote Access

Posted by Clarence Klassen on February 20, 2012

Today most companies expect remote access troubleshooting from suppliers of drive systems. Remote access software over the internet and using Virtual Private Networks (VPN) or web based remote access provide very useful remote access. Technically remote access can be performed two ways. A custome...

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Posted in: Tuning, Maintenance, Design, Communications

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13

CERN - Size, Speed and Precision

Posted by Clarence Klassen on February 13, 2012

In October I had a fascinating tour of CERN (European Organization for Nuclear Research) in Geneva, Switzerland. The Large Hadron Collider consists of a super cooled ring 27 km in circumference with a precision of 0.1mm at the targets. Beams of protons and anti-protons circle the ring in opposite d...

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Posted in: Tuning, Design, Measurement

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06

Permanent Magnet Motors

Posted by Clarence Klassen on February 6, 2012

Permanent Magnet (PM) motors stators are very similar to synchronous or induction motor stators. The rotor is made of a shaft with a sandwich of steel layers (laminations) or alternately with a solid casting. The rotor is permanently magnetized, usually with rare earth magnets. The PM produces flux...

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Posted in: Definitions, Design

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30

Feb 1, 1972 HP35 Calculator

Posted by Clarence Klassen on January 30, 2012

The first scientific calculator was introduced by HP February 1, 1972. That was the HP35 and included trigonometric and logarithmic functions. An alternative to the slide rule. At the time there was no market for scientific calculators. Estimates indicated a market of perhaps 10,000 units per year....

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Posted in: Design

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23

Synchronous Motors

Posted by Clarence Klassen on January 23, 2012

Synchronous motors stators are very similar to induction motor stators. The rotor is made of a shaft with a sandwich of steel layers (laminations) or alternately with a solid casting. The rotor requires a winding which must be excited with dc current. The rotor current or excitation electro-magnetiz...

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Posted in: Definitions, Design

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16

Induction Motors

Posted by Clarence Klassen on January 16, 2012

Induction motors are the simplest motors to manufacture. The rotor is made of a shaft with a sandwich of steel layers (laminations). The laminations have a ring of punchings. When aluminum or copper is cast into the punchings, a conductive cage called a squirrel cage results. That is all that is...

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Posted in: Definitions, Design

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09

Tachometers and Encoders

Posted by Clarence Klassen on January 9, 2012

Variable Speed Drives today can be run with or without sensors. By sensors, we mean encoders, tachometers or resolvers. These are attached to the Opposite Drive End of the motor and give an RPM feedback of the motor (not roller). The encoder costs several hundreds to $1000 plus wiring. If the drive...

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Posted in: Drives, Definitions, Measurement

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26

New Year Resolutions

Posted by Clarence Klassen on December 26, 2011

Another year finished. Did you get all done that you planned on? I know I did not. Right now would be a good time to plan for professional training this year. AIMCAL offers a number of courses specific to our web handling industry. Some 2 day AIMCAL courses to be presented in 2012 are: ·&n...

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Posted in: Training

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19

Guidelines for Speed Regulator Tuning

Posted by Clarence Klassen on December 19, 2011

When tuning speed regulators, at what speed the drive should be stepped and how large a step should be applied? First of all, the speed regulator is tuned very early in the life cycle of the mechanical equipment. Check with mechanical to ensure lubrication, alignment, pressures, vacuums, temperatur...

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Posted in: Drives, Tuning

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12

Running without tension

Posted by Clarence Klassen on December 12, 2011

This week I was called in to a paper mill to look at a problem following a drive upgrade. This was an old machine that had one section running in tension control for about 40 years. The old drive used a dc generator. The new drive was a previously enjoyed digital dc drive. After the upgrade, the ...

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Posted in: Tension Measurement and Control, Upgrades

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