The EMA Blog

EMA has elected to begin stocking 2000 HP Toshiba T300MVi  VFDs.   The part number is M3A44200SAA which is a 2000 HP, 4160 Volt medium voltage VFD in a Nema 1 enclosure.  With delivery times on MV drives running 6 months or more, EMA decided there was a need to begin stocking these units.  Since the [...]

VFD (Variable Frequency Drives) have decreased in price in recent years, and with standard VFDs, it’s often more advantageous from an economic viewpoint to replace rather than repair the VFD.   At EMA, as with most reputable VFD Repair companies, we let customers know this at once if this is, in our opinion, the case.  The [...]

The GE Multilin is a popular motor management and protection device.   The Mulitilin is not particularly difficult to install or setup, but can present an challenge if you’re not familiar with these types of devices. Large motors running on critical applications often need additional protection from that afforded by simple thermo-mechanical trip devices.   These motors [...]

We grew up primarily as an electronic motor drive repair company but began to repair soft starters almost from  our inception.  Modern softstarters are reliable,  effective, and provide great benefits. First:  If you need the motor to vary in speed, you don’t need a softstarter, you need a VFD.  But,  if you’d like to reduce [...]

Unlike DC drives,  very few AC drives will withstand a phase to phase short across the output phases of the drive without catastrophic damage.  The MX Plus variable frequency drive, which is made by Vatech in Austria and now part of Schneider Power Drives, was able to withstand the abuse of running in current limit [...]

With energy costs soaring, I find that many facilities are looking for additional ways to decrease unnecessary expenditures from their already strained budgets.  One way to decrease energy costs is through the use of Variable Frequency Drives (VFD) on many applications including,  commercial swimming pool pumps. VFD’s are  used to vary the speed of a [...]

VFD training is one of our most requested services.   The reason is obvious, maintenance people are being asked to do more and more with less and less.  Equipment is much more reliable now, but also more complex, so VFD training is a worthwhile investment. EMA built a national reputation repairing  industrial electronics including  VFD s, [...]

EMA has been in the business of repairing industrial electronics for many years.  For a long time, one of our primary revenue sources was repairing electronic circuit boards, and while we still do that, the vast majority of our work is now repairing larger horsepower variable frequency drives (VFD s) and large DC Drives.  (We [...]