Drives and Control Solutions

Motors, Control Solutions, Power Transmission and Advanced Motion Technology                                                                 

March 29, 2019

By: Warren Osak, CEO/Founder of Electromate

Often overlooked when sizing DC motors is the Speed-Torque Gradient.

The Speed-Torque Gradient is defined as  Δn / ΔM [rpm/mNm] .

The speed / torque gradient is an indicator of a motor’s performance. The smaller the value, the more powerful the motor and consequently the less motor speed varies with load variations. It is based on the quotient of ideal no-load speed and ideal stall torque.

The speed torque-gradient can be considered a measure of the motor strength, which is defined by motor type and size and not the winding selected. Basically it’s how much speed drop the motor will have for each 1mNm of torque applied.

In the figure above, enhancing the load torque leads to a linear reduction of the speed. Thus it becomes clear what the meaning of Δn/ΔM is: It’s the gradient of the speed-torque line.


Editor's Pick: Featured Article


By Brian Fortney, Global Portfolio Lead, Rockwell Automation

Having a workforce that’s well trained on current technologies and equipment is critical for any manufacturer. When workers lack necessary skill sets, they are more likely to make expensive mistakes that result in costly downtime. Without proper training, employees are also less productive and have lower job satisfaction. They often feel as though they aren’t moving forward in their career and get discouraged. In addition, the correlation between well-trained workers and a safer manufacturing environment shouldn’t be overlooked.

Clearly, the importance of industrial training must be a key consideration for employers. Unfortunately, developing a workforce with necessary knowledge isn’t always easy. A variety of factors are creating a serious skills gap, and many companies are struggling to find ways to address the challenges.

Read More


 

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What drives the requirement for accurate, high-quality labels? With so much hanging in the balance for manufacturers and retailers competing on a global scale, there's no good reason to ignore the need for label quality. Mislabeled packaging could have consequences that range from wasted product to (potentially severe) consumer health issues.

Let's take a look at four major areas that illustrate the importance of ensuring the accuracy and legibility of product and packaging labels and discuss a solution that can help avoid errors.

Area 1: General product traceability

Product traceability, in a general sense, is essential for consumer safety, regulatory compliance and overall quality perception. If there’s a problem with a product, traceability allows the consumer, retailer or another entity to quickly locate and segregate defective products in the event of a recall.

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CAPAROC is your individual modular system for overcurrent protection. With many combination options, intuitive operation, and simple design-in, you can create your personal standard in device protection. This system perfectly positions you for the future.

With a wide range of individual modules and many combination options, you can create your customized solution with CAPAROC. The customizable circuit breaker system is completely compatible, technologically up-to-date, and can be extended with future updates at any time, even during operation.

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