Author: Davoine, L.
Paper Title Page
TUPV036 An Evaluation of Schneider M580 HSBY PLC Redundancy in the R744 System A Cooling Unit 484
  • D.I. Teixeira
    University of Cape Town, Cape Town, South Africa
  • L. Davoine, W.K. Hulek, L. Zwalinski
    CERN, Meyrin, Switzerland
  The Detector Technologies group at CERN has developed a 2-stage transcritical R744 cooling system as a service for future detector cooling. This is the first system in operation at CERN where Schneider HSBY (Hot Standby) redundant PLCs are used. This cooling system provides a good opportunity to test the Schneider redundant PLC system and understand the operation, limitations and probability of failure in a con-trolled environment. The PLC redundancy is achieved by connecting Schneider M580 HSBY redundant PLCs to the system where one is the primary which operates the system and the other is in standby mode. A series of tests have been developed to understand the operation and failure modes of the PLCs by simulating different primary PLC failures and observing whether the standby PLC can seamlessly take over the system operation.  
poster icon Poster TUPV036 [1.154 MB]  
DOI • reference for this paper ※  
About • Received ※ 09 October 2021       Revised ※ 29 October 2021       Accepted ※ 20 November 2021       Issue date ※ 31 December 2021
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THPV049 Virtualisation and Software Appliances as Means for Deployment of SCADA in Isolated Systems 985
  • P. Golonka, L. Davoine, M.Z. Zimny, L. Zwalinski
    CERN, Meyrin, Switzerland
  The paper discusses the use of virtualisation as a way to deliver a complete pre-configured SCADA (Supervisory Control And Data Acquisition) application as a software appliance to ease its deployment and maintenance. For the off-premise control systems, it allows for deployment to be performed by the local IT servicing teams with no particular control-specific knowledge, providing a "turn-key" solution. The virtualisation of a complete desktop allows to deliver and reuse the existing feature-rich Human-Machine Interface experience for local operation; it also resolves the issues of hardware and software compatibilities in the deployment sites. The approach presented here was employed to provide replicas of the "LUCASZ" cooling system to collaborating laboratories, where the on-site knowledge of underlying technologies was not available and required to encapsulate the controls as a "black-box" so that for users, the system is operational soon after power is applied. The approach is generally applicable for international collaborations where control systems are contributed and need to be maintained by remote teams  
poster icon Poster THPV049 [2.954 MB]  
DOI • reference for this paper ※  
About • Received ※ 08 October 2021       Revised ※ 30 November 2021       Accepted ※ 19 February 2022       Issue date ※ 25 February 2022
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