Tag Archives: cooling fans

VFD Preventive Maintenance!

Several Variable Frequency Drives (VFDs) were sent into Deltas’ shop for repair. The clients’ complaint for them was that they were failing with an “Overtemp” fault. This is a very common fault/failure on all brands of VFDs. With only a … Continue reading

Posted in Delta Automation, Delta service advantages, Service stories, Uncategorized, VFD | Tagged , , , , , , , , , , , , , , , , , | Leave a comment

Some of the Top Things That Cause VFD (drive) Failure

Inverters, drives, VSDs, variable speed drives, variable frequency drives – the category of products used to control an electric motor’s speed and thus reduce energy usage in a variable speed application has more names than Prince. Although, I suppose when … Continue reading

Posted in Delta company news, Tech Tips, VFD | Tagged , , , , , , , , | Leave a comment

Triple Threat Failure

As you can see, this small VFD has failed. Quite spectacularly too!  This small unit had not been properly maintained. It had a blocked and failed cooling fan plus a loose power lead. This caused the unit and terminal to … Continue reading

Posted in Delta service advantages, On-site stories, Service stories, VFD | Tagged , , , , , , , , , , | Leave a comment

Buss Capacitors are a heat related casuality.

These capacitors were removed from a failed VFD. The cooling fans had failed and the unit was running very hot. These capacitors failed violently, as you can see from the photos.  This repair was compounded by the fact that the … Continue reading

Posted in Delta Automation, Delta company news, Delta service advantages, Service stories, VFD | Tagged , , , , , , , , , | Leave a comment