Customer: PS Systec — Weska-Futron — Pharmaceutical company “Roche”, Germany.

Automation system for propane/CO2 refrigeration plant:

• 5 chillers (including 1 spare) – 1 inverter and the others step 0-100%;
• compressor pack with 3 compressors (including 2 spare) – 1 inverter and the others step 0-100%;
• 5 double pumps with local controllers Wilo Stratos;
• 2 coldstore rooms (heating, cooling, defrosting);
• PID-regulation of expansion valves in propane and CO2 circuits;
• recuperation of condenser heat;
• redundancy – two identical automation systems with standby switch-over, synchronization over Ethernet;
• datapoints to client’s SCADA (Siglimata) via 2 Profibus DP/DP Couplers;
• trends and CSV-tables for all analogue values and statuses, storage on SD-card in TP900 for 5 years;
• remote maintenance over Internet;
• operator interface in English and German languages.