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.