90E32 Datasheet, PDF (58/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Table-11 Power and Power Factor Register
Register
Address
Register Name
Read/Write
Type
Functional Description
Comment
B4H
QmeanT
B5H
QmeanA
B6H
QmeanB
B7H
QmeanC
R
Total (all-phase-sum) Reactive Power
Complement, MSB as the sign bit
R
Phase A Reactive Power
XX.XXX kvar
R
Phase B Reactive Power
1LSB corresponds to 1var for phase A/B/C, and
R
Phase C Reactive Power
4var for Total (all-phase-sum)
B8H
SAmeanT
B9H
SmeanA
BAH
SmeanB
BBH
SmeanC
R
Total (Arithmetic Sum) apparent power
R
phase A apparent power
Complement, MSB always '0'
XX.XXX kVA
R
phase B apparent power
1LSB corresponds to 1va for phase A/B/C, and
R
phase C apparent power
4va for Total (all-phase-sum)
BCH
PFmeanT
R
Total power factor
BDH
PFmeanA
R
phase A power factor
Signed, MSB as the sign bit
X.XXX
BEH
PFmeanB
R
phase B power factor
LSB is 0.001. Range from -1000 to +1000
BFH
PFmeanC
R
phase C power factor
C0H
PmeanTLSB
R
Lower word of Total (all-phase-sum) Active
Power
Lower word of Active Powers.
1LLSB^* corresponds to 4/256 Watt
C1H
PmeanALSB
C2H
PmeanBLSB
C3H
PmeanCLSB
R
Lower word of Phase A Active Power
R
Lower word of Phase B Active Power
R
Lower word of Phase C Active Power
Lower word of Active Powers.
1LLSB corresponds to 1/256 Watt
C4H
QmeanTLSB
R
Lower word of Total (all-phase-sum) Reactive
Power
Lower word of ReActive Powers.
1LLSB corresponds to 4/256 var
C5H
QmeanALSB
C6H
QmeanBLSB
C7H
QmeanCLSB
R
Lower word of Phase A Reactive Power
R
Lower word of Phase B Reactive Power
R
Lower word of Phase C Reactive Power
Lower word of ReActive Powers.
1LLSB corresponds to 1/256 var
C8H
SAmeanTLSB
R
Lower word of Total (Arithmetic Sum) apparent
power
Lower word of Apparent Powers.
1LLSB corresponds to 4/256 VA
C9H
SmeanALSB
CAH
SmeanBLSB
CBH
SmeanCLSB
R
Lower word of phase A apparent power
R
Lower word of phase B apparent power
R
Lower word of phase C apparent power
Lower word of Apparent Powers.
1LLSB corresponds to 1/256 VA
Note: All the lower 8 bits of C0H-CBH registers and E0H-EFH registers are always zero. Only the higher 8 bits of these registers are valid.
In this document, LLSB means bit 8 of the lower registers as below:
b15 b14 b13 b12 b11 b10
b9
b8
(LLSB)
b7
b6
b5
b4
b3
b2
b1
b0
6.6.2 FUNDAMENTAL/ HARMONIC POWER AND VOLTAGE/ CURRENT RMS REGISTERS
Table-12 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers
Register
Address
Register Name
Read/Write
Type
Functional Description
D0H
PmeanTF
R
Total active fundamental power
D1H
PmeanAF
D2H
PmeanBF
D3H
PmeanCF
R
phase A active fundamental power
R
phase B active fundamental power
R
phase C active fundamental power
D4H
PmeanTH
R
Total active harmonic power
Comment
Complement, 16-bit integer with unit of 4Watt.
1LSB corresponds to 4Watt
Complement, 16-bit integer with unit of 1Watt.
1LSB corresponds to 1Watt
Complement, 16-bit integer with unit of 4Watt.
1LSB corresponds to 4Watt
Register
58
December 9, 2011