Datasheet

90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC

MMode0

Metering Method Configuration

Address: 33H

Type: Read/Write

Default Value: 0087H

Bit Name Description

15-13 - Reserved.

12 Freq60Hz

Current Grid operating line frequency.

0: 50Hz (default)

1: 60Hz

11 HPFoff Disable HPF in the signal processing path.

10 didtEn

Enable Integrator for didt current sensor.

0: disable (default)

1: enable

9-Reserved.

83P3W

This bit defines the voltage/current phase sequence detection mode:

0: 3P4W (default)

1: 3P3W (Ua is Uab, Uc is Ucb, Ub is not used)

7CF2varh

CF2 pin source:

0: apparent energy

1: reactive energy (default)

6-5 - Reserved.

4 ABSEnQ

These bits configure the calculation method of total (all-phase-sum) reactive/active energy and power:

0: Arithmetic sum: (default)

ET=EA*EnPA+ EB*EnPB+ EC*EnPC

PT= PA*EnPA+ PB*EnPB+ PC*EnPC

1: Absolute sum:

ET=|EA|*EnPA+ |EB|*EnPB+ |EC|*EnPC

PT=|PA|*EnPA+ |PB|*EnPB+ |PC|*EnPC

Note: ET is the total (all-phase-sum) energy, EA/EB/EC are the signed phase A/B/C energy respectively. Reverse energy is neg-

ative. PT is the total (all-phase-sum) power, PA/PB/PC are the signed phase A/B/C power respectively. Reverse power is nega-

tive.

3 ABSEnP

2EnPA

These bits configure whether Phase A/B/C are counted into the all-phase sum energy/power (P/Q/S).

1: Corresponding Phase A/B/C to be counted into the all-phase sum energy/power (P/Q/S) (default)

0: Corresponding Phase A/B/C not counted into the all-phase sum energy/power (P/Q/S)

1EnPB

0EnPC