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  • Keith Ooi
  • Member since 2019
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  • Blog posted : 2 posts   Forum posted : 1 posts
Blogs from Keith Ooi

Back to Basics - Learning About Variable Speed Drive VFD

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A variable-speed drive (VSD) is a piece of motion control hardware that regulates the RPM (Hz) and/or torque (voltage) of an AC motor.Some people simply call them "drives" but they go by a number of different names including AC drives, inverter drives, frequency inverters, adjustable-frequency drives (AFD), variable-frequency drives (VFD), variable-voltage drives (VVD) and micro drives.You might find a VSD in a water treatment facility, where water pumps are used to control the amount of water coming into, and leaving, the plant.A VSD might be controlled manually via it's hardware interface or intelligently via a programmable logic controller (PLC).Without a VSD, and when a motor's RPM or torque is too high or too low for its application, mechanical controls are sometimes used to slow, shift and control an application's output — this is often wasteful, using energy and materials inefficiently.Variable-speed drives are a great alternative to mechanical equipment because they can regulate process output right at the source, saving energy and money whilst cutting down on motor wear, maintenance and scrap.Implementing VSDs around your facility can be an excellent way to meet your annual emissions and environmental goals, financial goals or just reduce the noise around the facility.Finally, although a VSD should not be confused with a soft starter, you can also use a VSD to "soft start" motors with a heavy load when they are being powered up and powered down. Again, this provides significant cost and wear benefits for the motor, preventing overheating and excessive wear.If you want to know more about variable-speed drives or if you are simply looking to purchase, please contact one of our team members at Fictron.We support, sell and repair industrial drive equipment for a number of key brands, including KEB, Lenze, Yaskawa, Mitsubishi, Danfoss, ABB, Siemens and Allen-Bradley. more

How to Decide - When to Repair and When to Replace

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Often engineers have to make a good decision whether to repair the machine or not. Deciding whether to repair or replace broken machinery is one of the primary tasks of a factory engineer. In addition to baseline cost comparisons, there are several questions to be addressed. These includeWhat is the average lifespan of machines in this class?What is the value of the machine, based on its age and repair history?How long will it take to repair the machine?How will productivity be affected if the machine is taken offline for repair?Can the machine continue to be operated, albeit less efficiently, in its current state?What additional maintenance costs can be anticipated during the remainder of the machine’s life?Other factors may pre-empt these considerations, such as safety issues that clearly indicate the necessity of an immediate shutdown. In the case of critical equipment shutdown, an engineer may be forced to choose the quickest method to get the plant back up and running — even if it means incurring greater cost.Cost, moreover, is a complex variable. While a company might resist its spending by postponing costly repairs, over time the hidden costs of lost efficiency and productivity may greatly outweigh any immediate savings. On the other hand, while a new machine may promise maximum efficiency, it will likely also present hidden costs. These include fees for installation, inspection and certification; disposal of old equipment and remediation of hazardous materials; and earmarking time and resources for employee training in operations and safety.In addition, machine warranties should be factored in when comparing costs between repair and replacement. Although the cost of a new machine may be significantly higher than the cost of repair, the prospect of free maintenance for a set period may balance out that difference. Replacement with a newer model machine may also afford desirable capabilities outside the realm of the older model’s specifications.There are many factors to consider and the decision is normally not straight forward. Fictron Group of Companies a multi award winning company is a middle ground solution engineers can look for. Fictron repairs PLCs, HMIs, Servo Motors etc! more
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Sunday, 26th April 2020

How to Decide - When to Repair and When to Replace

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Tuesday, 5th May 2020

Back to Basics - Learning About Variable Speed Drive VFD

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