Streamworks automates Inca Lime Mine

July 2001 System Integration & Control Systems Design

Streamworks Group was recently selected to implement an automated control system for a new rotary kiln plant, which has been designed, manufactured and erected by Fer-Min-Ore at Inca. This new mine will convert mined limestone into lime at its site 40 km from Potgietersrus. Processed lime is used in the making of, amongst other things, the production of steel and in water treatment.

The objective of the Streamworks automated control system, which took two and a half months to complete, is to provide control and visualisation of the rotary kiln.

The system comprises an IPC scada workstation, located on the firing platform of the mine's control room, which is connected to a Siemens S7-315 PLC with two extension racks via a Profibus communication cable. The workstation runs on a Windows NT workstation platform and hosts the WinCC scada. Siemens Step 7 v 5.0 PLC programming software, as well as Siemens WinCC v 5.0 scada programming software, has been used in the system. WinCC password security and, in addition, WindowsNT security, applies.

A wide variety of scada screen overviews are available, such as plant overview, PF plant, the kiln and off gas plant, product handling, feed, light fuel management, network overview and alarm screen. Diagnostic screens enable the control of different plant areas, incorporating features such as mode selection, start/stop control for motors or the setting of operating modes. The plant is able to run in four modes and trends can be selected from the start-up screen. Plant sirens are used for the start up of the plant and to draw attention to new faults in the system.

Streamworks

(011) 803 4376

[email protected]

www.streamworks.co.za

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