PAPER MANUFACTURING FACILITY

Motor VFD Upgrade

Overview

ACE Engineers was responsible for upgrading the controls for 6 FVR motors to variable frequency drives (VFDs) in two production lines to improve the starting and stopping of conveyors carrying stock pallets.  The system consisted of 2 ControlLogix L72 Allen Bradley PLCs and 755 drives.  The project involved the modification of the PLC program, set-up of the 755 drives, creating demolition drawings, updating existing electrical and control drawings, and on-site start-up and debug.

Challenges/Solution

The previous system induced too much vibration when stopping and starting the conveyors which caused the pallets to fall off, creating a safety hazard.

Results

By upgrading the FVR motors to variable frequency drives the conveyors are now able to be started and stopped smoothly preventing the pallets from falling off.

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