Ventilation Process Control Migration Toward Functionality General Overview

Ventilation Process Control Migration Toward Functionality General Overview of a Ventilation Process Control Structure completed By th 90 s (LEP era) EXTRACT AIR Point 2 Control Assembly ECA Equipment Control Assembly Master PLC Sinec-L 1 bus Air-unit Control Overall monitoring for data transmission over the LEP accelerator Different operating modes govern the ventilation process of the tunnel in accordance to the configuration of the machine which requires coherent ventilation process interactions. SUPPLY AIR Home-made device which handles communication with all master PLCs Several PLCs running different units are involved in performing the process interactions over the LHC accelerator points. Intermediate PLC between Process and general control EXTRACT AIR The execution of commands is issued from local Unit-PLCs at each even point to the adjacent local Unit-PLCs at odd shafts through the considered master PLCs. Proprietary bus for Master slave communication Other units are concerned with the ventilation and smoke extraction process, for the surface buildings, PM, PX, lift and experimental areas… PLC in charge of several air-units 140 PLCs are concerned in the Control Migration 20. 000 digital & analog points are declared over the PLCs 1000 blocs of 32 words each are used for PLCs to PLCs com Point 1 SINEC L 1 bus is no longer available and supported by Siemens. Spare parts will not be available beyond the 5 next years Siclimat operating software used during the 90 s to develop the application programs has been removed from Siemens library. Any support can not be foreseen and programs should be translated to standard S 5… Process alarms ECA has been removed from CERN control Architecture, home-made Software and Hardware can not be maintained due to lack of software ressources and hardware spare parts Global Ventilation Process DBase Process Status Siemens PLC-S 5 structure has become obsolete and must be upgraded to integrate any further Software or (and) Hardware modifications due to the reconfiguration of the tunnel Air Units (UAPT) and others (UAPA, UAPE. . ) Point 2 Point 1 SCADA Wizcon • Local Monitoring of the Ventilation Process. • Transmit the Process Status & Alarms to the TCR. Local UMMI and Alarms Handling Process commands The control Architecture is composed of old technology elements that are no longer supported in a short term and must either be replaced or upgraded. New PLCs (LHC) need to be integrated CONTROL MIGRATION ON NECESSITY OF A CONTROL MIGRATION Standard TCR synoptics are specially incorporated in the local SCADA and displayed through the Wizcon-Web Interface New Air units are installed in the LHC Tunnel, in TI 2 &TI 8 and must interact with present units. Consequently new PLCs should be integrated in the architecture. Reconfiguration of the master basic structure for the integration on Ethernet TCP • Control and ensure the Inter-Point Process Data Exchange • Redundant system for TCR Data Transmission Modification of the basic structure for the integration on Ethernet TCP of the S 5 -115 U Siemens PLCS running the Lep- LHC air handling units Integration on Ethernet of the S 7 Siemens PLCS Nouvelle unité de toiture SPS running the air unit for the alcoves, TI 2 , TI 8, LHC tunnel ventilation process Integration on Ethernet of a decentralised periphery for specific underground data acquisition Réaménagement PS LHC Ethernet Backbone PCA Process The mechanism to control the Supply-Extract Air Process is quite complex D. BLANC / ST CV