Two diktir systems in the Kragujevac heating plant – to maintain pressure in the network system, i.e. boilers. Each diktir system for maintaining pressure controls two 18.5kW pumps, which are controlled by Danfoss frequency regulators, with which the PLC communicates.

PLC Siemens S7-1200 is responsible for the logic of operation, and parameterization of the entire system is done on the Weintek touch panel.

Both systems are networked and exchange data with the existing Siemens scada system.