Many motors do not need to run flat out all the time, and a fixed speed wastes power. A VFD panel varies the motor speed to match the duty.
The panel houses a variable frequency drive that changes the power to the motor, so the motor runs at the speed the process needs.
This guide explains what VFD panels do, where they fit, and how to keep them reliable.
What VFD Panels Do
The panel houses a variable frequency drive, which changes the frequency of the power fed to the motor.
By changing the frequency, it changes the motor speed, so the motor runs faster or slower as the duty needs.
So the equipment runs at the right speed, and the motor draws only the power that speed needs.
Where They Fit in the Plant
Pumps, fans, and other motors whose duty varies suit a VFD panel to match their speed to the need.
Where running a motor at full speed all the time would waste power, the VFD saves it.
By matching speed to duty, the panels help the plant run at the right speed and save power.
Signs a VFD Panel Needs Attention
A VFD panel in trouble shows up in the drive.
- The motor speed not matching the set point
- The drive tripping out
- The panel running hot
- Faults shown on the drive
- Loss of smooth speed control
What Makes a Good VFD Panel?
A VFD panel is judged by smooth speed control and reliable running.
Smooth Speed Control
The drive must vary the motor speed smoothly to match the duty. Smooth control is the point of the panel.
Reliable, Cool Running
The panel must run reliably without overheating. Cool reliable running keeps the drive in service.
Keeping a VFD Panel Running
Routine attention keeps a VFD panel controlling your motor speed.
- Watch that the motor speed matches the set point
- Watch the panel does not run hot
- Watch for faults or trips on the drive
- Keep the panel clean and cool
Common Questions About VFD Panels
It houses a variable frequency drive that changes the power to a motor to vary its speed, so the equipment runs at the speed the duty needs and saves power.
By running the motor only as fast as the duty needs, rather than flat out all the time, it draws only the power that speed needs and wastes less.
On pumps, fans, and other motors whose duty varies, where matching the motor speed to the need saves power and controls the process.
Watching that the speed matches the set point, watching that the panel stays cool, watching for faults, and keeping the panel clean keep the drive in service.
Match Speed to Duty
A VFD panel varies a motor speed to match the duty, so equipment runs at the right speed and saves power. Smooth speed control and cool reliable running are what make it dependable.
If your motors would run better at varied speed, a VFD panel can do it. Explore our equipment and automation for the right fit.
See our equipment and automation and run your motors at the right speed with a VFD panel.
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