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Your search is over! Download now the quick guide to ac variable frequency drives immediately and never have to search for anything else on VFDs again!

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CHAPTER 6 - USING VFDS WITH DCS/PLC SYSTEMS

VFDs used in a process plant
Detailed Implementation of the above
Digital Communications
Need for digital communications
Functions of a typical digital network
Profibus
Modbus
Safety Aspects
Summary & Conclusion

Dear Friend,

Variable Frequency Drives (also known by other names such as Variable Speed Drives, Inverter Drives, Frequency Drives, Adjustable speed drives) are growing in importance every day as you see them being increasingly used in all kinds of places, not just manufacturing plants and industries, but also in office buildings, warehouses and other commercial places. The reason is easy. Variable Frequency Drives are the best thing that ever happened to the ac induction motor, as you can now control these motors in a variety of ways, which were not at all possible earlier.

You have seen how detailed and comprehensive the ebook is. So what are you waiting for? Download the FREE PREVIEW of the ebook, so that you know what you're getting. The FREE PREVIEW allows you to browse through the ENTIRE BOOK for a limited time- so you have nothing to lose!

DOWNLOAD IT NOW!

So what you'll get inside isn't somebody's complex PhD treatise, with hundreds of partial differential equations that will make you shudder at the thought of even looking-NO!

This ebook is the practical, no nonsense, easy to understand guide to Variable  Frequency Drives meant for use by electrical engineers, electrical technicians and other electrical and instrumentation/automation professionals.

This is that "one guide" that you were searching for. It is the info that you were looking for on the internet, but after hours of surfing you could not really find it.

It is the selection guide to VFDs that you would have loved to have but hated asking the vendor's sales rep for something like this.

In short, this is the Quick Guide to VFDs that somebody should have written long ago (but nobody did- so we stepped in to fill the gap).

However, the information that is available on how to use these drives is not very easily available. Of course there ARE several sources of information, but are problematic. Why? Read on below:

Source 1: The internet

Of course, there is a lot of "free information" out there that is on the internet, but it is difficult to verify, collate and understand. To do this would also require literally spending endless hours surfing, and trying to find something that can actually be used in your work.

Source 2: Textbooks

You could buy a textbook on the subject from any of the bookstores; the only problems being that the information is very likely outdated and secondly many of these are written in a way that is difficult to understand for the practising engineer or technician like you. Seriously do you have the time to solve some complex vector mathematics, differential equations and the like? Or would you want to find out quickly why your expensive VSD is tripping up at a particular frequency?

Source 3: Vendor literature

Would you ask a barber whether you need a haircut? What would be the answer? No prizes for guessing! If you ask a vendor (nothing against them, they are the ones who develop the technology behind these wonderful devices) but the chances are that you will not get UNBIASED answers. Suppose a standard V/f drive is good enough for your application. Would a typical vendor tell you that? Or would he/she try to "upsell" you to a vector drive? I think you get the point

So, we at Abhisam Software (who develop a lot of e-learning courses for engineers and technicians) thought about it and decided that we should have an UNBIASED GUIDE to this wonderful technology that is

a) Easy to understand

b) Not too long winded, without skipping anything important

c) Easily accessible

Here's the end product - A QUICK GUIDE TO AC VARIABLE FREQUENCY DRIVES!