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Variable frequency drives (VFDs) have most commonly been used in water treatment plants, where they’re used to regulate water flow. But in recent years, they’ve grown in popularity throughout many areas of the industry. Integrating a VFD into your automation system can provide numerous benefits. These include process optimization, increased motor life, energy savings, and time savings. 1. Process ...
VFD design is driven by desire for more safety, energy management and communication options. Customer and market trends for VFDs Market trends driving variable frequency drive development and design. Of all the customer and market trends identified, safety, energy management and design flexibility are vital. Integrated safety is becoming the norm, rather than the exception, and it’s being used bey...
When choosing a variable frequency drive (VFD), six factors you should take into consideration to ensure that you specify the correct AC drive for your application. Full Load Amperage the first decision to make when choosing a VFD is making sure the drive can handle the motors current demands. Check the motor nameplate for the Full Load Current requirement, then find a drive that’s rated for at le...
1. Reduce energy consumption and energy costs If your application does not require full speed operation, you can reduce energy costs by using a variable frequency drive to control the motor, which is one of the advantages of variable frequency drives. VFDs allow you to match the speed of motor-driven equipment to load requirements. No other AC motor control method will allow you to achieve this. 2...
In the fault handling of the medium voltage VFD, the key to effectively improving the operation of the equipment is to be able to quickly determine the location of the equipment fault and deal with it effectively. Although hazards vary by site and application, there are many things to consider when attempting to perform electrical maintenance. Medium voltage (MV) equipment poses an even greater ri...
When we are using VFDs, choosing the right VFD cable is often overlooked, this factor will ultimately affect the life of your motor. Think of the VFD cable now as your insurance policy for your variable speed motor. Protect your motor Variable speed motors are ubiquitous and play a pivotal role in all walks of life. Engineers and operators have invested in AC drive systems without realizing the im...
VFD in reserved storage Many applications using variable frequency drives (VFDs) are critical and cannot afford extended downtime. Many people choose to keep a spare VFD on the shelf so that it can be switched when needed. However, if you're not careful, the VFD may not work when you need it. Here are a few things to look out for to ensure your spare VFD is ready to be taken out of long-term stora...
Convert Single Phase VFD to Three Phase VFD A common question we get asked about is phase conversion: Can a variable frequency drive (VFD) convert my single-phase power supply to run a three-phase motor? Single-phase AC power is common in many residential and agricultural settings, but can also be seen in some industrial locations. It usually has only two phases (L1 and L2) and possibly a neu...
The application of frequency converter in industrial production is very important. In addition to speed regulation and soft start, the most important thing is that it can save energy. At present, with the continuous improvement of industrial automation, frequency converters have also been widely used. Recently, many customers have inquired about the precautions when installing the inverter. The fo...
How to judge the fault of the Variable Frequency Drive? 1. The rectifier module is damaged Usually caused by grid voltage or internal short circuit. Replace the rectifier bridge after eliminating the internal short circuit. When dealing with faults on site, focus on checking the user grid conditions, such as grid voltage, whether there are electric welding machines and other equipment that pollute...
When we are using VFD, we must be familiar with the basic working principle and functional characteristics of VFD. Before the inspection and maintenance of the frequency inverter, the main power supply of the equipment must be cut off; and the Variable Frequency Drive indicator light must be completely extinguished. Daily inspection items: Before powering on the VFD, check the temperature and humi...
At present, the main purpose of using frequency converters is energy saving and speed regulation, so according to different requirements, there are frequency converters with different control functions: conventional V/F control frequency converter and vector control frequency converter. With conventional V/F control, the voltage drop of the motor will increase relatively with the decrease of the m...
Dolycon offers an extensive support system to help customers choose the best product. We care about your business and personal needs. Get in touch today.