Article: ABB's small PLCs are easy to install and configure.

* The electrical construction giant ABB has not been known as a leader in PLCs, even though it has absorbed some pretty good technology in this area over the years as it acquired various companies. Alfa-Laval Automation's SattCon controllers were, for example, state-of-the-art during the mid-1990s.

Nevertheless ABB is in the PLC business, thanks to the efforts of ABB Stotz-Kontakt GmbH in Heidelberg. It has introduced a compact line of PLCs called the AC31 (Advant Controller) that have been used in a variety of ABB construction projects ranging from harbour cranes to dairy production. It has couplers for the ABB S3/S4 robots as well as a number of ABB variable ...

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