gallery banner base

Project Ten:  This job removed two slip ring motors and antiquated controls from an overhead crane and replaced them with 2 inverter-duty induction motors, interface control relays and new variable frequency drives.

a Control Project 010 TOP
  • Replaced two slip ring motors with Elektrim 40 HP motors with custom double ended shaft for mechanical brakes.
  • Removed slip ring motor field resistors and associated pull-in speed contactors.
  • Removed forward and reverse starters.
  • Installed new branch circuit protection in motor control center.
  • Installed new panel with two ACS 800 AC Variable Frequency Drives in a NEMA 4 enclosure with cooling fans and ducts into air conditioned equipment room.
  • Drives operated in a master-follower mode via ABB fiber optic link
  • Installed Finder ice cube relays to interface between the existing PLC and the drives.
  • Turnkey installation and startup.
a Control Project 010 MIDDLE
Control Project 010 BOTTOM02

This web page was created by Paul C. Stauffer III, graphic artist and media designer.
For information about media and design services please visit  
Paul C. Stauffer III is not responsible for the content on these web pages.
All content responsibility lies with the client who commissioned the creation of this
series of web pages.