Common cause of VFD Failure.

 VFDs are are extremely susceptible to dust, debris, moisture, and overheating. If you are using a VFD in an area that is consistently taking in dust, debris, or moisture the operating life of your VFD will be shortened.

In environments with high humidity, such as wastewater treatment plants, your VFD is at risk for circuit board corrosion from moisture being sucked into the cabinet through the cooling vents constantly. This, compounded by possible infrequent use, can enable moisture to build up without time for heat and ventilation to dry it out. To avoid issues caused by humidity, ensure that the operating environment and storage space for your VFD is clean and dry, and consider a dehumidifier to dry out the air (ensure the dehumidifier does not leak near any electronic equipment). For extreme humidity or wash-down environments a NEMA 4, 4X or 5 enclosures may be necessary.

Another common cause of VFD failure due to environment is the clogging of cooling vents by airborne particles, especially when combined with moisture or oil. Metallic particles can also short circuit your VFD circuit boards. Tracking or arcing marks across components or circuit board traces indicate evidence of contamination failure.

To combat negative side effects or possible catastrophic failure due to build up, clean all parts of your VFD at least monthly. Also make sure you are using the correct cabinet for your environment. Some cabinets have side vents for cooling airflow, but these are more open to contamination. You are able to purchase drives in a sealed, dust-free housing if needed. Remember: Keep your VFDs free from dust, debris, and moisture at all times.

Periodic maintenance can prevent the repeated VFD failures. Preventive service can save huge maintenance cost of your system. Our team is highly experienced & well trained for preventive maintenance of VFD & industrial electronics products.

                                                     Our IOT based online ac drive predictive maintenance software generates alarm before failure of the AC drive. It can save huge repair cost of AC drive.

  





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