Development of New Supervisory Control and Data Acquisition System for 1.3 kW Helium Refrigerator Cum Liquefier at 4.5 K

The 1.3 kW Helium Refrigerator cum Liquefier (Helium plant) at 4.5 K is the major cryogenics system of SST-1. The superconducting magnet systems of SST-1 are cooled by Helium plant. The Helium plant consists of compressor station, oil removal system (ORS), on-line purifier and cold box. Each subsystem has dedicated Programmable Logic Controller (PLC) for their operation. A Supervisory Control and Data Acquisition (SCADA) application was developed in Citect SCADA software in 2002. The Citect SCADA software is obsoleted now and no technical support is available from principal. Therefore, a new SCADA application is developed in Wonderware InTouch 2017 R2 software and deployed for Helium plant for uniform SCADA system for SST-1 Cryogenics subsystems. This has provided many new features and satisfactory experience over old SCADA system. This paper discusses the various technical issues arise during development, integration experience with Helium plant, new additional features and future development plans.