MAXQ3180-RAN+ datasheet(53/101 Pages) MAXIM

53 / 101 page

Low-Power, Multifunction, Polyphase AFE

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Voltage and Current

RMS Volts, Phase X = A/B/C (V.X) (A: 0x831, B: 0x832, C: 0x834)

This register contains the RMS voltage on phase A/B/C. The units are defined by the VOLT_CC setting such that V.X

= X.VRMS x VOLT_CC. In this equation, VOLT_CC is the conversion coefficient. See the VOLT_CC register for more

information.

RMS Amps, Phase X = A/B/C/N (I.X) (A: 0x841, B: 0x842, C: 0x844, N: 0x840)

This register contains the RMS current on phase A/B/C or the neutral channel. The units are defined by the AMP_CC

setting such that I.X = X.IRMS x AMP_CC. In this equation, AMP_CC is the conversion coefficient. See the AMP_CC

Power Factor

Power Factor (PF.T) (0x867)

This signed register contains the power factor of the total power. The power factor is calculated as:

It is expressed in units of 0.00001; thus, unity power factor is expressed as decimal 100,000

(0x00000000000186A0). This register is presented as a two’s complement value, so that a load delivering real power

to the line (that is, reverse power) is seen as having a power factor of -1 (0x0000FFFFFFFE7960).

PF T

A ACT

B ACT

C ACT

A APP

B APP

C APP

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

MAXQ3180-RAN+ Datasheet(PDF) 53 Page - Maxim Integrated Products

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