Flow Control

Informazioni

Flow Control

The applications a variable fast need for change the fast of a electric motor, that of absolute rule and depends of poles of the motor’s number.

They consist essentially in an inverter, that to at average of set point pre-set, through a signal of proportional feedback from transducer, adapting the frequency and the supply voltage of a motor, so ...

The applications a variable fast need for change the fast of a electric motor, that of absolute rule and depends of poles of the motor’s number.

They consist essentially in an inverter, that to at average of set point pre-set, through a signal of proportional feedback from transducer, adapting the frequency and the supply voltage of a motor, so the its fast in function of applicate load.

Thus system may be used whit profit for change the pump flow in place of traditional system, like valve on throttling and is valid especially because a little reduction of speed reflected in a sharp reduction of power absorbed, carrying out a energy saving estimable among the 20 % and 50 %.

Should be used, well, only the energy more there is needed.

Clearly also the cost of annual routine maintenance, seen the simplification of plan, whit the adoption of inverter system, are suffering from drastic reduction.

Functional characteristics:

  • Possibilità of choose in phase of order of hydric circuit type  of control ( open or close);
  • Functioning with two pump in parallel. Shall be started and stopped in sequence; one of two pump in rotation is controlled by Inverter for the adjustment of speed.
  • Interchange pump in automatic commander by Inverter in pre-programmed daily time, interpolations.
  • Automatic reset fault inverter for maximum 6 alarm in hours;
  • Automatic switching function of emergency for inverter failure doesn’t go back in modality of sequential function;
  • Automatic emergency function of switching for controller failure programmable, in logic electromechanical control steered by external commands (ex. pressure switch)(optional);
  • Function of switching interpolation from selector mounted on electrical panel front with a function “ MANUAL OR AUTOMATIC”, for controller failure programmable, in logic electromechanical control steered by external commands (ex. pressure switch)

Programmable function:

  • Approach first set-point (valor request pressure constant  pressure operation);
  • Approach second set-point, alternative to first;
  • State of function operation (Pcos - Sequential);
  • Calibration valors and time of action pump/pumpsin sequential state ( emergency);
  • Compensation for loss of load, for increase the hydric request;
  • Approach min/max exercise frequency pump commander by Inverter;
  • Response time system at the variation of request hydric conditions;
  • Min/Max pressure valor (protection by transducer );
  • Late timing action of protection pump from min and max pressure;
  • Late start/stop leading pump;
  • Approach hourly change exercise pump;
  • Approach hours on/off system, with approach daily/weekly ( up to 4 approach);
  • Possibility of choose for inclusion continue exercise with minimum frequency, for hydric clearance request or stopped pump;
  • Approach current date and hours;
  • Approach functional mode pump ( automatic, manual of network, stop);
  • Approach (with licensing) maximum pump voltage for automatic correction of the curve ( only for pilot pump).

General characteristics:

  • Access network three-phase 50/60 Hz 400V ± 10%;
  • Num. 2 access in low-voltage for commander by transducers of pressure;
  • Access in  low-voltage for pressure switch or  floating of minimum or other dispositive of stopped of emergency;
  • Inverter of electronic frequency;
  • Automatic circuit breakers for protection pump with network command;
  • Auxiliary fuse of protection auxiliary;
  • telltale lamp for signal entered circuit auxiliary 
  • Telltale lamp of general robberies signal;
  • Panel view touch screen 4,2” TFT 64000 colors  (optional 5,7”- 7”-10”);
  • Contact of free change from electric potential for remote signal of action anomaly ( 5A 250 Vac AC1);
  • Access in low-voltage for on/off operation of remote;
  • Access in low-voltage for remote inclusion of second set-point;
  • General disconnector with electrically operated door locks;
  • Num. 1 Selector for operation of motors by inverter -off -manual ( in manual goodwill from external dispositive, for ex. pressure switches)
  • Goodwill  for any pump by pressure switches/ floating (optional)
  • Num. 2…6 telltale lamps for signal of leading pumps on the march (optional);
  • Num. 2…6 telltale lamps for signal of pilot pumps on the march (optional);
  • Metal casing;
  • Level of protection IP54;
  • Ambient temperature: -5/+40 °C;
  • Relative humidity 50% a 40 °C (damp-heat).
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