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BMENOC0311 SCHNEIDER

Brand: Schneider

Model number: BMENOC0311

Colour:new                  

Warranty: 12 months

Lead Time:3-day working day   

Country of origin: USA Price: Please contact us         

Product weight:0.40kg

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

BMENOC0311   SCHNEIDER

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Products Name: BMENOC0311 SCHNEIDER

PRODUCT DESCRIPTION

The autoreclose function provides the ability to automatically control the autorecloser (two, three or four shot cycle, settable using “Phase Cycles” and “E/Gnd Cycles” menu). Dead times for all the shots (reclose attempts) can be independently adjusted.

Description:

Pump submenu PMP

The principal objective is to control a complete pumping installation using a single ATV12 drive by providing constant pressure whatever

the flow rate.

The system is operated using an auxiliary fixed speed pump, and one variable speed pump, which is unable to provide the full flow range

required on its own. A PI regulator is used for drive control. The pressure sensor provides system feedback.

The variable speed pump is called a variable pump.

The fixed speed pump is called an auxiliary pump.

Selecting the operating mode

The ATV12 offers 2 operating modes:

• Single variable mode: 1 single variable speed pump (variable pump).

• Single variable with auxiliary pump mode: 1 variable speed pump (variable pump) and one fixed speed pump (auxiliary pump).

Control of the auxiliary pump

The PI regulator output (frequency reference of the variable pump) is used to control starting or stopping of the auxiliary pump with

hysteresis, as shown in the figure below:

When the frequency exceeds the starting threshold (FOn), a time delay (tOn) is launched to avoid the effects of transient flow fluctuations.

If after this time delay, the frequency remains higher than the starting threshold, the auxiliary pump is started. When the start command is

sent, the variable pump will go from its current speed reference to the auxiliary pump stopping frequency (FOF) following a ramp (rOn) that

equals the time taken for the auxiliary pump to reach its nominal speed. Parameter rOn is used to minimize the booster effect on starting

the auxiliary pump


BMENOC0311   SCHNEIDER

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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