Refrigeration station automation system for supermarket chain Lidl

Project period
Siemens SIMATIC Step7 V12, CPU S7-1200, web server with Ajax, WinCC V12, HMI TP700.

Customer: PS Systec Gmbh.

Automation system for propane/CO2 refrigeration plant for the network of supermarkets Lidl:

  • 4 chillers with 0-50-100 step compressors;
  • chillers automatically and flexibly switch between 3 modes: cooling, heating and heat-pump;
  • low temperature cold room.
  • consumer: air cooling fancoils – 3 zones, floor grid heating – 4 sections, refrigerated showcases – 5 groups;
  • incoming air heating, ventilation, illumination, fire alarm;
  • alarm logs stored in PLC;
  • web-server with Ajax technology;
  • operator interface in English and German languages;
  • 5 PLCs S7-1200 work together over Ethernet.
overview chiller chiller-manual chiller-sequence chiller-settings chiller-settingsV01_DE general_settings info MDU