QPC20-60

QPC20-60

· Input for analog transmitter 4-20 mA 2 or 3 wires for water system pressure detection;

· N. 4-8 general start up inputs for floats or pressure switches;

· N. 2-6 (according to the model) inputs for motor temperature probes (N.C.) in fixed speed operation mode;

· Alarm output relay with changeover contact N.O. / N.C.(250 V~ 5 A max, resistive load);

· Modbus-RTU RS-485 communication;

·Command with selector, ø 22 mm LEDs and LCD display;

· Constant pressure with variable speed’ mode;

· Constant pressure with fixed speed’ mode (in case of emergency);

· Stop and run for the intervention of floats or pressure switches connected with the command start up inputs;

· Independent operation in MANUAL mode, at fixed preset speed for the main pump and at full speed for secondary pumps;

· Main disconnecting switch with door lock;

· Protection for motor overload or phase absence:

- electronic protection for the main pump controlled by the inverter;

- thermal relay protection for the secondary pumps supplied by the network;

· Protection for motor overtemperature:

- electronic protection without PTC motor sensor for the main pump;

- protection through motor internal sensor for the secondary pumps;

· Protection for analog transmitter lack or fault;

· Inverter supply, motor supply and auxiliary circuit protection fuses;

· 24 Vdc Auxiliary circuits and 24 Vac from safety transformer;

· Forced ventilation (according to the model);

· Very low voltage inputs;

· RFI noise filter for EMC civil environment use (power supply connected with the public network);

· Maximum motor cable length: 150 m with shielded cable, 300 m with unshielded cable.