Altivar Process ATV600, what is the scaling of the Analog output when assigned to Inlet pressure, Output pressure or Installation flow parameters?

There are several factors that have influence on analog output scaling if assigned to inlet pressure, outlet pressure, installation flow:
- system units definition
- presence of dedicated sensor and its assignment in "Sensor assignment" menu
- scaling range of the sensor when assigned to analog input AIx
- flow range derived from pump curves when AQ assigned to installation flow but installation flow or pump flow assignment = estimated flow.

If there is no inlet pressure sensor and no assignment, then analog output assigned to inlet pressure gives 0mA(4mA) or 0V. If there is a inlet sensor used and assigned to AIx, then analog output assigned to inlet pressure will use scaling copied from the scaling on AIx

Likewise for outlet pressure value.
- No sensor => 0mA/0V on analog output assigned to outlet pressure.
- Sensor used and assigned to AIx => analog output scaling will copy AIx scaling

Likewise for installation flow.
- No sensor and no assignment in FS1A  => 0mA/0V on analog output assigned to installation flow.
- No sensor, but assignment FS1A=Estimated pump flow and pump curves entered and activated and flow estimation enabled, then analog output assigned to installation flow will use scaling of pump curves (here pump flow = installation flow). The scaling will appear as min-max value FS2V and SLFV. In my case according to pump curve, th head vs flow curve could reach max 8m3/h (at low pressure) while installation flow sensor that I used measured up to 20m3/h.
- Sensor used and assigned to AIx => analog output scaling will copy AIx scaling

For pump flow [FS2V], assignment is not available for AQ

Note: In booster control you may have different setting for FS1A (installation flow sensor assignment)and FS2A (pump flow sensor assignment).

Опубліковано для: Schneider Electric Україна