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Welcome to Kollmorgen's Blog in Motion.  We have been adding information and knowledge to the great web based world for many years - through white papers, technical documents, and even webinars.  Kollmorgen enjoys sharing our knowledge with you, as well as identifying other motion related tidbits through our Twitter, Facebook, LinkedIn and YouTube feeds.  Our newest source is Blog in Motion, covering a wide range of topics, as well as some interesting contributing authors with lots of Motion experience.  If Motion Matters to you, stop by, follow, like, and sign up so you can stay tuned for what Kollmorgen has in store for you!

There is a nostalgic group out there thinking about when they first were introduced to the BASIC language. BASIC? What is that? Kind of like today when you say album or 45, or even vinyl – certain “younger” folk will look at you and say “whhaatt?” – after they pull the ear buds from their ears and pause there MP3 players. BASIC – Beginner’s All-purpose Symbolic Instructional Code. I first used Basic to program a computer back in 1976, and it had already been around for over 10+ years at that point.

Cogging and Torque Ripple questions are common and many times, difficult to answer.

Cogging torque is defined as the attraction/interaction of the magnetic poles to the teeth (steel structure) of the laminations within an un-energized motor.

Torque ripple is defined as the variance of the torque of the energized motor with a constant current. They are related in position independent of magnitude or direction, but cogging torque is generally not presented as a specification for servo motors.

The American Meat Institute generated a Fact Sheet related to Sanitary Equipment Design in 2008 which helps the OEM Machine builder to design sanitary solutions for the Food Processing and packaging market. Our blog post looks at the 10 sanitary design principles recommended by the AMI and how automation system design plays an important role.
Washdown applications can be quite the tough environment. In the first place, typically you’ll find washdown requirements on machines that process foods. You know how careful you are when cooking at home, making sure you wash your hands after touching raw meat. Keeping cooked meat away from the surfaces you had raw meat sitting, or washing the utensils you use to handle raw meat is common in the kitchen.
Consumers expect safe food.  The Feds expect a safe food supply chain-farm, processing, packaging, and distribution.  As we all work to consistently meet consumer food safety expectations, the need to prevent and control food adulteration and/or contamination is present in every step of the supply chain.  Our modern and globally expanding food and beverage processing and packaging industries have made and continue to make great strides in improving food safety by improving preventive, control, cleaning and sanitation methods.
When a load is driven directly by the motor, the conversation around reflected inertia goes out the window. The belief is that direct driven loads do not, by their nature, have a reflected inertia. Some folks are even confident enough to say that the ratio of the load inertia to the motor inertia does not need to be taken into account when direct driving the load as long as you have enough torque and speed. I have never had enough confidence to make such a statement.
What is a laughable offense to the public is a representation of the hidden challenges behind packaging and automation. Sure, the package was mostly correct, it contained 8 buns, they were pre-sliced, and odds are pretty good that the two products weigh the same. The package is at least see-through, so as a consumer, you still know what you're buying. But what if it was a bottle of 50mg heart medication that actually contained tablets of 100mg medication?

All those permanent magnet DC motors, synchronous motors, servo motors, servo drives, stepper drives, oh yeah, and remember the great stepper motors they offered? The one stepper motor was a weird shape. It was octagonal where others are square or round. Hard to forget that one!

Sabotage!

21 Aug 2013
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“You clown’s don’t have a chance in hell! You can’t stump me!” I ranted to our team after successfully solving another challenge. The competition heated up. Just days before I had set up a linear slide system with a servo motor and drive, and challenged each of my teammates to ‘break’ the system and challenge me to fix it. The ‘winner’ who stumps me gets lunch, on me. Essentially they were contract saboteurs

There are challenges for a servo motor's protection against overheating by the manufacturer, machine designer/OEM, and user, because there is no thermal device that can protect a motor against a fast transient event.  For just as there is a time lag between the final steady-state temp rise of a coil of wire with a given current going through it, there is a time lag for the thermal device to achieve its trip resistance once that trip/application temperature has been presented to the thermal device.

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