Product of the Week

Hitachi America Ltd.: High-Starting Torque Inverters

April 20, 2009
/ Print / Reprints /
ShareMore
/ Text Size+


The SJ700 Series of inverters, successor to the SJ300, can develop 150 percent torque at 0 Hz. It has an improved sensorless vector control algorithm that enables it to develop more than 200 percent starting torque at 0.3 Hz. According to the manufacturer, the EzSQ (Easy Sequence) built-in programming function is like having a programmable logic controller (PLC) built into the inverter, and in many cases, the need for a separate PLC can be eliminated. The program is developed on a PC and then downloaded to the inverter using the EzSQ software provided. Mated with a general-purpose induction motor with an encoder, the inverter is given a position command, speed command, and acceleration/deceleration times. Features include patented micro-surge voltage suppression (to protect the motor winding insulation), advance trip avoidance functions, configurable sink/source logic on I/O, and built-in dynamic braking circuit in models up to 30 hp (22 kW).

Hitachi America Ltd., Industrial Systems Division, 50 Prospect Ave., Tarrytown, NY 10591; 914-332-5800; 914-332-5555 (fax); www.hitachi-america.us/inverters

eProduct 181

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

Podcasts

NEWSMakers: Mark Satterfield

Mark Satterfield, founder and CEO of Gentle Rain Marketing Inc. and author of “The One Week Marketing Plan” talks about his book and the importance of HVAC blogging. Posted on Sept. 19.

More Podcasts

ACHRNEWS

NEWS 09-22-14 cover

2014 September 22

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

Venting R-22

The NEWS reported that a man received prison time for venting R-22. Should EPA step up enforcement?
View Results Poll Archive

HVACR INDUSTRY STORE

plumbing-hvac.gif
2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research

 

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

DON'T MISS A THING

Magazine image
 
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.

STAY CONNECTED

facebook icontwitter iconyoutube iconLinkedIn i con