Datasheet

90E36A POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register 61 April 2, 2013
6.6.3 THD+N, FREQUENCY, ANGLE AND TEMPERATURE REGISTERS
E1H PmeanAFLSB R
Lower word of phase A active fundamental
Power
Lower word of registers from D1H to D3H.
1LLSB corresponds to 1/256 Watt
E2H PmeanBFLSB R
Lower word of phase B active fundamental
Power
E3H PmeanCFLSB R
Lower word of phase C active fundamental
Power
E4H PmeanTHLSB R Lower word of Total active harmonic Power
Lower word of D4H register.
1LLSB corresponds to 4/256 Watt
E5H PmeanAHLSB R Lower word of phase A active harmonic Power
Lower word of registers from D5H to D7H.
1LLSB corresponds to 1/256 Watt
E6H PmeanBHLSB R Lower word of phase B active harmonic Power
E7H PmeanCHLSB R Lower word of phase C active harmonic Power
E9H UrmsALSB R Lower word of phase A voltage RMS
Lower word of registers from D9H to DBH.
1LLSB corresponds to 0.01/256V
EAH UrmsBLSB R Lower word of phase B voltage RMS
EBH UrmsCLSB R Lower word of phase C voltage RMS
EDH IrmsALSB R Lower word of phase A current RMS
Lower word of registers from DDH to DFH.
1LLSB corresponds to 0.001/256A
EEH IrmsBLSB R Lower word of phase B current RMS
EFH IrmsCLSB R Lower word of phase C current RMS
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:
Register
Address Register Name
Read/Write
Type Functional Description Comment
b15 b14 b13 b12 b11 b10 b9
b8
(LLSB)
b7 b6 b5 b4 b3 b2 b1 b0
Table-13 THD+N, Frequency, Angle and Temperature Registers
Register
Address Register Name
Read/Write
Type Functional Description Comment
F1H THDNUA R phase A voltage THD+N
1LSB corresponds to 0.01%F2H THDNUB R phase B voltage THD+N
F3H THDNUC R phase C voltage THD+N
F5H THDNIA R phase A current THD+N
1LSB corresponds to 0.01%F6H THDNIB R phase B current THD+N
F7H THDNIC R phase C current THD+N
F8H Freq R Frequency 1LSB corresponds to 0.01% Hz
F9H PAngleA R phase A mean phase angle
Signed, MSB as the sign bit
1LSB corresponds to 0.1-degree,
-180.0°~+180.0°
FAH PAngleB R phase B mean phase angle
FBH PAngleC R phase C mean phase angle
FCH Temp R Measured temperature
1LSB corresponds to 1 °C
Signed, MSB as the sign bit
FDH UangleA R phase A voltage phase angle Always ‘0’
FEH UangleB R phase B voltage phase angle Signed, MSB as the sign bit
Take phase A voltage as base voltage
1LSB corresponds to 0.1 degree,
-180.0°~+180.0°
FFH UangleC R phase C voltage phase angle