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.