SIMATIC Step7, ProTool. CPU S7-414, MP270B.
Customer: GEA Grasso (employed). Limpantsis fruit storage base. Greece, Thiva.
Number of controlled I/O:
127 AI, 23 AO,
427 DI, 189 DO,
47 Profibus nodes.
Refrigeration automation system: 6 screw compressor units in two systems -1 and -11°C, 2 frequency controlled (ABB, Profibus) evaporative condensers, recuperation, 5 frequency controlled primary glycol pumps, 2 water pumps, 14 coldstore rooms with secondary pumps, motor valves, T and DT, CO2, humidity control, automatic defrosting and frequency controlled air-cooler fans, 6 coldstore rooms with motor valves and T control, 5 banana rooms, ammonia detection. Assistance to Frost SA in making WinCC SCADA.