Schneider Altivar 61 VW3A3502 handleiding
Handleiding
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1765272 10/2011 11
Operating Principle
General
The main object is to control a complete pumping installation using a single ATV61 drive, providing:
- Constant pressure in the system whatever the flow rate
- A simple method for setting up and diagnosing the installation via the ATV61.
The system is operated using several fixed speed pumps (maximum of 4), and one variable speed pump, which is unable to provide the full
flow range required on its own. A PI regulator is used for pump control. The pressure sensor provides system feedback.
To avoid systematic wear of the same pumps, a function is provided that allows switching of the pumps according to their operating time.
The variable pump can also be included in this changeover procedure.
The variable speed pump (PV) is called a variable pump.
The fixed speed pumps are called auxiliary pumps.
Application example with 3 fixed pumps:
The auxiliary pumps are turned on and off according to the flow rate required by the installation. The variable pump is controlled so as to
ensure continuity in the flow rate variations.
P1M1 P2M2 P3M3
PVMATV 61
2310
P3
P2 P2
P1 P1 P1
PV
PV
PV
PV
4
Control of auxiliary pumps
Card
VW3A3502
Number of pumps
Flow
rate
PV: variable pump
P1, P2, P3: auxiliary pumps
Flow rate at
constant
pressure
Pressure
measurement
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Productinformatie
Merk | Schneider |
Model | Altivar 61 VW3A3502 |
Categorie | Niet gecategoriseerd |
Taal | Nederlands |
Grootte | 2928 MB |