The EMA Blog

For many years, the most popular DC Drive on the market was the Reliance MaxPak and MaxPak Plus drives.   EMA has done MaxPak DC Drive repairs and field service for over 20 years. (IF you need to speak with a technician about a Reliance Maxpak plus DC Drive..  hit the “Live Support” button at the [...]

EMA performs Siemens Simoreg DC Drive repairs, and has done so for many years. The Siemens Simoreg DC Drive is found in a number of DC Drive applications, normally in coordinated DC Drive systems.   The units were very popular at one time and are found in many  process industries, such as paper mills and steel [...]

One of the most common uses for VFD s is controlling the speed of airhandlers and blowers. In fact, one could argue that hvac airhandling equipment has been the primary driver of VFD sales for several years.  EMA is a major supplier and service center for airhandler VFD s.  We sell and do field service [...]

EMA has been performing  the Emerson or Control Techniques Mentor DC Drive repairs for many years.  This drive was introduced some years ago, and has been through several model changes. While the software and keypad configurations have changed a bit, overall the various drive models are fairly similar. The drive can either be regenerative or [...]

  Sabina Drives was founded by Les Tjelmeland and at one time, was a major player in the DC Drives world. Their headquarters was in California, and they had a facility in Hazleton, PA.   EMA purchased the Hazleton facility in 2005. Sabina DC Drives were well known for their durability, and are still in use [...]

If you’re like me, you cannot stand that dreaded phone call you seem to get when you first sit down at your desk on a Monday morning.  You’ve yet to sip your coffee, heck you probably haven’t even removed your coat.  The last place you really want to be right now is sitting in a [...]

Since EMA is a repair facility, we see all types of VFD s in our shop, including ABB VFD s. Given that ABB is a major player in the drive industry it’s imperative that EMA technicians are well versed in troubleshooting ABB VFD s. The  common VFD troubleshooting techniques apply to all manufacturers, but there [...]

One of the most common inquiries we get here at EMA is for training on VFD s (Variable Frequency Drives).  Often however, it isn’t often cost effective to teach this to a small number of people on site.   We are offering an intensive two day seminar on Industrial VFD s in Norcross, Georgia on April [...]

Yaskawa is replacing their popular E7 HVAC VFD with their newest offering, the Z1000 VFD. EMA will continue to carry the E7’s in stock for the next few months, and I encourage our customers with an installed base to consider buying a spare drive. The E7 has been a terrific product, enjoying the highest mean [...]