Flow Drive

Informazioni

Flow Drive

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:

  • 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.
  • 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/ flow/ constant  operation temperature);
  • Approach second set-point, alternative to first (some optional if you have the possibility of change from local or remote);
  • Approach minimum frequency of exercise pump commander by Inverter;
  • Late start/stop leading pump;
  • Approach hourly change exercise pump;
  • Possibility of choose for inclusion continue exercise with minimum frequency, for hydric clearance request or stopped pump;
  • Frequency stop pump for Q= 0;
  • Pressure  of reboot pump after stop for Q=0;
  • Approach current date and hours;
  • Approach functional mode pump ( automatic, manual of network, stop).

Dispayed parameters 

  • Number start-ups pump in automatic mode;
  • Active alarms;
  • Record Alarms;
  • Pressure measured;
  • State pump;
  • Frequency rotation pump (only automatic mode);
  • Trend of pressure in graphic form.

General characteristics:

  • Access network three-phase 50/60 Hz 400V ± 10%;
  • Num. 1 access in low-voltage for commander by transducers of pressure ( 4÷ 20 mA o 0-10V to be specified in order phase);
  • 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 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 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)
  • Num. 2  telltale lamp for signal of leading pumps on the march (optional);
  • Num. 2 telltale lamp 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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