March 2000
CITECT SCADA in Sasol Coal's main control roomWhen you control the raw material feed to the plant which produces a large percentage of South Africa's petrol, you need a reliable system. Sasol Coal has installed the CITECT SCADA system, which provides for uninterrupted supply of feedstock to the factory. This 20 000 I/O 40 node system was designed, installed and commissioned in only two months just before Y2K and is a tribute to the ease of configuration and solid structure of the CITECT system.
Roger Girdler - XYCOM SOUTH AFRICA
Drives, Motors and Switchgear
Tackling radio frequency interference associated with frequency converters
Mick Baugh (Danfoss) ,
The causes and effects of electrical noise generation on variable speed drives - RFI on the ac powrline - and the selection and installation of a variale speed drive
Motor inrush current -what does it really mean?
Sigefried Kreutzfeld (WEG) ,
To ensure that motor protection operates correctly we must appreciate the current drawn by a motor under different operating conditions
Engineering Projects and Plant
New control system for Sasol Coal Supply (SCS)
The replacement of SCS's total control system infrastructure has resulted in a dramatic improvement in their turnaround time
Hazardous Areas
Methods of protecting equipment used in hzardous locations
Willie Badenhorst (Tecmo Automation) ,
Introducing various protection methods and understanding the limitations thereof
Lighting
Smart systems for building management
Dirk Visser (Clipsal Data-Comm) ,
An extensive range of software driven equipment is now available to manage lighting control
PLCs, SCADA and Industrial Communications
The industrial intranet: a cause for change
Gary Graham (Schneider Automation) ,
Ethernet, a high performance deterministic network service, meeting the needs of real-time industrial automation applications and processes
Emerging communications standard for rugged domains
Alwyn Hoffman and Charles Bodenstein (Potchefstroom University of CHE) ,
The Lontalk protocol and associated Lonworks technology offers many benefits to end-users, system integrators and product developers
Test, Measurement and Calibration
Using calibrated vibration instrumentation for measurement, diagnostic and condition monitoring
Martin de Beer (Concilium Technologies) ,
Vibration monitoring serves as a powerful diagnostic tool in maintenance programmes
A consideration of the requirements of calibration of a HART instrument
Hilton Preston (Spesom Measuregraph) ,
Calibration of a HART instrument is complex and must frequently be done in the field
