VFD Panel: What is it?
The VFD Panel, sometimes referred to as a VFD Control Panel, is used to regulate the speed of the feed pump and electric motor.
They are extensively utilised in drilling, pumping, and other large machine applications, such as compressor and conveyor.
There are two ways to control the speed of an AC motor: either by adjusting the voltage or the frequency.
Due to consistent flux density, frequency control provides greater control than voltage control.
This is where the functionality of VFDs is useful.
It is a power conversion device that changes the input power's fixed voltage and fixed frequency into an output with variable voltage and variable frequency to control AC induction motors.
Most industrial applications call for stable speeds during times of low load and variable speeds during times of high demand.
VFDs that operate in closed loop mode keep the motor's speed constant despite input and load fluctuations.
Why use VFD panels?
VFD has two key features: variable speeds and soft start/stop functions.
VFDs are an effective controller for controlling AC motors thanks to these two features.
Advantages of VFDs
In addition to providing customizable speeds for precise and accurate control applications, variable frequency drives also have significant advantages in terms of process control and energy conservation.
Below are a few of these.
Electric motors in industries utilise more than 65% of the energy.
When the motor needs variable speed, both the magnitude and frequency control techniques to change the speed use less power.
Therefore, these VFDs conserve a lot of energy.
By continuously comparing the motor speed with the reference speed despite changes in the loading conditions and input disturbances like voltage fluctuations, closed loop regulating VFD enables accurate positioning of the motor speed.
Restricts the beginning current
When beginning, an induction motor uses 6 to 8 times the nominal current.
Because they offer low frequency when beginning, VFDs perform better than conventional starters. Low frequency causes the motor to draw less current, which never exceeds its nominal rating during beginning and operation.
It provides smooth starting and stopping operations and lessens the mechanical and thermal strain on belt drives and motors.
Elevated power factor
The DC connection of the VFD's built-in power factor correction circuit eliminates the requirement for extra power factor correction devices.
In particular no-load applications, the induction motor's power factor is quite low, however under full load, it ranges from 0.88 to 0.9.
Due to large reactive losses, low power factor causes poor power utilisation.
Factory connected and preprogrammed VFDs provide a simple connection and maintenance method.
Pressurized panels and purging
Explosion- and flame-proof panels
PLC systems for SIL safety
Systems for Distributed Control
Type-tested assembly panels per IEC 61439
VFD panels, also known as variable frequency drives, are an essential component of any manufacturing or construction facility.
Read this article at CM Industry Supply Automation to have a complete understanding.
A VFD panel is essential for maintaining the output inside of any facility because of its reliable operation.
Any malfunction in its operation may set off a series of events that would halt production throughout the entire factory.
CM Industry Supply Automation's variable frequency drive panel will be discussed in detail.
How To Use A VFD Panel
These panels typically have a circuit breaker or relay that trips in the event of a damaged input power line.
It safeguards not only the drive but also the connected equipment to the main line.
The VFD panel should have a door made of a frequency control potentiometer.
Its setup primarily assists in sending control signals to the motor.
Finally, it safeguards the ecosystem.
Engineers and manufacturers employ VFD panels for a variety of factors, one of which is this.
Furthermore, this could lead to issues that are both immediate and long-term.
Extreme weather and temperature protection is not a feature of VFD panels.
Numerous field indicators make it possible to learn in real time how much power the drive is using.
Additionally, it has controls that enable the operator to change its frequency as needed.
Why Pick CM Industry Supply Automation's VFD Panels?
For obvious reasons, CM Industry Supply Automation has earned the trust of numerous manufacturing facilities.
It manufactures all of its products with the concept of "innovation" in mind.
All of these VFD panels greatly reduce your industrial expenditures.
Don't wait too long, then.
Contact CM Industry Supply Automation right away to start incorporating innovation into your own industry.
They offer the most competitive prices on the top VFD panels.
Additionally, their extremely innovative panels and services are dependable and have a very long lifespan.
You only need to get in touch with them.
VFD Maintenance: Important Factors
The three primary principles of variable frequency drive maintenance—keeping them clean, dry, and with tight connections—are straightforward.To ensure that each criteria is met, owners and facility managers must develop routine preventative maintenance and inspection procedures.
Preventing VFD Cleanup
The National Electrical Manufacturers Association (NEMA) has several categories that VFDs fit within.
The majority of VFDs are NEMA 1 or NEMA 12.
NEMA 1 VFDs include side vents to improve airflow and are designed for indoor applications.
These vents offer some defence against solid foreign objects, but they also let dust build up inside the appliance and on the vents.
This may prevent the VFD unit from being cooled by heat sinks and circulating fans.
They need routine cleaning to prevent material buildup that might impair performance or obstruct airflow.
NEMA 12 VFDs are closed devices that are sealed against dust and debris, as opposed to NEMA 1 units.
Drying off VFDs
Maintenance of VFD
VFDs are susceptible to moisture damage, like the majority of electronics.
Dehumidifiers can assist keep the ambient humidity level in storage areas low enough to lower the danger of corrosion.
NEMA 12 devices with sealed casings are more resistant to accidental drops and splashes, but they should still be checked frequently to limit their exposure to water.
Because devices have open side vents, NEMA 1 VFDs are particularly more susceptible to moisture.
Moisture can easily enter the unit and lead to corrosion due to the open vents and an unsealed cover.
It's crucial to properly arrange the area and routinely monitor on-site VFDs because even a small amount of water leaking from a nearby dehumidifier unit might cause the device to malfunction.
Maintaining Tight VFD Connections
To function, variable frequency drives need tight connections.
Even while the units themselves may not be moved frequently, mechanical vibration, repeated heating and cooling, or even unintentional movement over extended periods of time, can cause connections to loosen with time.
The connections should be routinely checked for loose connections or overtightening by facility management since these actions can result in faults that are similar to those caused by loose connections.
By strictly following tight preventative maintenance routines, each of these three requirements can be fulfilled.
It can be challenging to repair electronic faults and identify underlying problems with VFDs when something goes wrong because malfunctions can grow gradually and covertly.
Regular inspections halt the problems before they ever start.
Support For VFD Preventive Maintenance From CM Industry Supply Automation
All electrical equipment should undergo routine preventative maintenance, especially when it comes to electric motors and moving parts.
VFDs operate better and cost less to repair and replace when they are kept clean, dry, and well-connected.
CM Industry Supply Automation is here to assist you maintain your VFDs running smoothly.
For more than 35 years, we have specialised in providing preventative maintenance services and electric motor repairs to businesses all around the world.
Our business has ISO certification, and we offer top-notch electric motor services to the following sectors:
Energy and power
Oil and gas
Railways and transportation
Get in touch with us right away to find out more about how we can keep your electric motors and machinery in good working order.
CM Industry Supply Automation article is the first in a series explaining the crucial elements to consider when sizing a variable frequency drive for a drive system.
The final application will establish the load characteristics, a crucial component that is covered in this article.
Read the other articles in this series on power supply and motor dimensioning.
Making sure a variable frequency drive (VFD) has enough capacity in terms of KW and nominal current rating to enable the motor to generate the required torque throughout the intended speed range while allowing for any periods of overload is probably one of the most crucial aspects of making the right choice.
The various load types can be divided into:
The three typical properties of loads
The nature of the driven machine, or its application, is taken into consideration as the initial stage in dimensioning a drive system.
Because of their constant torque profiles, HD motors are those that handle loads like augers (drills), screw compressors (for example, chillers), positive displacement pumps, and conveyors.
Little initial overload is necessary for motors handling centrifugal pumps and fan applications. They also have a lower initial torque as compared to some HD applications.
Numerous machine tools, such as grinders, lathes, and winders, continuously load motors (CP).
This means that regardless of speed or torque, power remains constant.
A regenerative induction motor is used by an increasing number of devices.
At specified times during operation, built-up inertia in the driven machine may cause the motor to function as a generator and cause the DC bus voltage of the VFD to rise. If this condition is not addressed, the VFD may trip and the load may spin out of control.
Dynamic brake resistors (DBR), which burn surplus regenerative energy as heat, must often be installed in order to use these regenerative applications.
Although it may not always be the most effective technique to manage regenerated energy, this kind of system may have the lowest initial cost.
There are three typical load categories that motors deal with:
Heavy duty and constant torque (HD)
Varying torque and regular duty (ND)
Continuous power (CP)
Every one of these load characteristics might be either continuous or cyclic; cyclic loads can provide unique difficulties for the drive system's overall performance and should be carefully taken into account during the planning stages.
A VFD with an active "front end" can be a more effective option because it will allow regenerative current to flow back into the mains without the need for braking resistors to be connected, which is necessary for applications that may be regenerative.
Do you need specialized assistance?
In a range of industries, CM Industry Supply Automation (Lenze VFD, Lenze Drive, KEB VFD, KEB Drive, Siemens VFD, Siemens Drive, Yaskawa VFD, Yaskawa Drive) supplier and repair service provider assists OEMs in dimensioning and installing cutting-edge, revolutionary variable speed drives.
We offer premium variable speed drives that can help you increase the performance of your application, add automated control features, and improve project energy efficiency.
Contact a variable frequency drive expert today at India: +91 8956113099 Australia: +61 3 9013 5882 or firstname.lastname@example.org to find out more about our expert support service.
Get all industrial automation products sales & repair services. Call us for Lenze Drive, Keb Drive, Siemens, Allen-Bradley equipment sales and repair services.
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