ADE7761ARS-REF datasheet(26/28 Pages) AD

26 / 28 page

ADE7761

Rev. A | Page 26 of 28

DISCLAIMER

The ADE7761 provides pulse outputs—CF, F1, and F2—

intended to be used for the billing of active energy. Pulses are

generated at these outputs in two different situations.

Case 1:

When the analog input V2P – V2N complies with the

conditions described in Figure 32, CF, F1, and F2 frequencies

are proportional to active power and can be used to bill active

energy.

Case 2:

When the analog input V2P – V2N does not comply with

the conditions described in Figure 32, the ADE7761 does not

measure active energy, but a quantity proportional to kAh. This

quantity is used to generate pulses on the same CF, F1, and F2.

This situation is indicated when the FAULT pin is high.

Analog Devices Inc. cautions users of the ADE7761:

•

Billing active energy in Case 1 is consistent with the

understanding of the quantity represented by pulses on

CF, F1, and F2 outputs (watt-hour).

•

Billing active energy while the ADE7761 is in Case 2 must

be decided knowing that the entity measured by the

ADE7761 in this case is ampere-hour and not watt-hour.

Users should be aware of this limitation and decide if the

ADE7761 is appropriate for their application.

ADE7761ARS-REF 数据表(PDF) 26 Page - Analog Devices