Case Study 103: Scarfing
Industry Sector: Environmental
Scarfing / Crusher Conveyor System

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OLD TECHNOLOGY REPLACED:
Antiquated Relay Panel

NEW TECHNOLOGY APPLIED:
Allen Bradley MicroLogix
Allen Bradley Component HMI

PROJECT DESCRIPTION:
Staneco Corporation designed a crusher conveyor control system to replace an existing relay panel. The system consisted of conveying material through a series of conveyors and hydraulic crushers. Crushed material was then conveyed and separated by size and conveyed to different piles. Speed of the conveyor was controlled by VFD based on operator input. Safety interlocks were applied to prevent any possibility of injury. The system was able to operate in automatic, remote and manual modes. HMI displayed alarm conditions and location of fault events.

PROJECT OUTCOME:
The combination of the PLC and HMI provided a more modernized system which increased throughput and minimized downtime while meeting all safety requirements.