Electromagnetic interference, also known as EMI, can cause significant issues in an industrial setting. Computers, lights, security systems, personal medical equipment, and any electronic device can be negatively affected by EMI. EMI can create a less productive and potentially dangerous work environment.
To prevent EMI, sometimes called radio frequency interference (RFI), you must understand why it happens and the steps that can be taken to prevent it.
The Cause of Electromagnetic Interference
According to Popular Mechanics, EMI happens when an electronic device “hears” a radio frequency that it was not made to pick up. If you have ever heard a radio or speaker emit a buzzing noise because of another electronic device in its vicinity, you have experienced the EMI phenomenon.
In an industrial setting, electromagnetic interference can be caused by a number of devices, including an HVLS fan. One of the most common scenarios that leads to EMI is when a fan is placed a great distance from its controller. This forces the signal to travel a long way from the controller to the fan itself, which often leads to electrical interference. Left unchecked, this interference can wreak havoc on critical computer networks and security systems within your facility.
Putting an End to EMI From HVLS Fans
A number of preventative measures exist to stop rogue electromagnetic waves produced by an HVLS fan from disturbing other electronic systems. Some fan controllers are built with filters to ensure that they do not emit more electronic waves than necessary. Other fans come with shielded motor cables between the controller and the fan to prevent the signal from being picked up by nearby devices.
Prevent EMI in Older Model HVLS Fans
If you select an older HVLS fan with a variable frequency drive, the ideal way to prevent EMI with an HVLS fan is reducing the length between the controller and the fan motor. The further away your fan’s controller is from its motor, the greater the risk of experiencing EMI because of electromagnetic waves traveling along the cable between these two elements. Placing the controller near the fan motor and using shielded cables or advanced radiation-blocking devices will help prevent EMI, but MacroAir has developed an even better solution.
Eliminate EMI All Together
With the development of the AirVolution-D, MacroAir has effectively put an end to the challenge of blocking electromagnetic radiation from HVLS fans. Because the AirVolution-D was designed with an onboard AirBrain processor, there is no need to worry about how far away from the controller it is placed.
The AirBrain on the AirVolution-D fan provides several benefits relating to the prevention of EMI:
- Eliminates the need for an external controller to receive frequencies,
- Integrates effectively with other systems to reduce the likelihood of malfunction,
- Accepts a wider range of voltages, and
- Senses input power and environmental conditions to make real-time adjustments in case there is an external electrical problem.
The Bottom Line
While you might not think of it this way, preventing EMI in HVLS fans is a critical part of the buying decision. You must consider it carefully so you can prevent a serious issue with your fan further down the road. Your best bet is to take advantage of technological developments in manufacturing to help ensure that EMI does not cause problems in your facility.