Jun 11 - PLC Enhancements at TATA, Scunthorpe

30/06/2011 11:16:38

Inspec Solutions provides PLC Enhancements on Caster 5 Strand PLC

The current system comprises of six individual Strand PLC systems and a General PLC system. Each PLC system consists of a Rockwell Automation ControlLogix PLC communicating to Rockwell Automation Flex I/O modules over a ControlNet communications link. All the PLCs are interfaced to an RSView SE SCADA package which provides the operator interface.
The purpose of the project was to add remote I/O in the form of Rockwell Automation Flex I/O to each of the existing six Strand PLC systems. This I/O is required to accommodate the additional control requirements associated with the following upcoming projects and including spare I/O for the future.
• Strand PLC Upgrade
• Laser Cooling Control/Velocimeters
• WS Units Water Cooling Manifold Replacement
• Steam Exhaust Fan Inverters
• MCC Upgrade
• Frost Protection System
A new standalone control panel was provided for each of the six Strand PLC Systems. Each panel contained Flex I/O modules and a ControlNet I/O adaptor suitable for connection as remote I/O onto the existing PLC systems. Each panel was supplied complete with 110Vac/24dc power supplies and power distribution equipment. All I/O including all spare modules was pre-wired to interface terminals.

Each panel was fitted with 2x Rockwell Automation Flex I/O drops populated with I/O modules.

One major achievement was that Inspec Solutions designed, built and delivered the six panels in a 7 week turnaround to meet Tata Steels plant shutdown schedule.