71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
AUGUST 2007
Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation effects as well as scaling
factors.
CE
Name
Default
Description
Address
These parameters are added to the Watt calculation to compensate for input
noise and truncation.
2F
22
QUANTA
QUANTB
0
0
LSB=(VMAX*IMAX / IA_8) *7.4162*10-10 W for phase A, and
LSB=(VMAX*IMAX / IB_8) *7.4162*10-10 W for phase B
These parameters are added to the VAR calculation to compensate for input
noise and truncation.
34
24
QUANT_VARA
QUANT_VARB
0
0
LSB = (VMAX*IMAX / IA_8) * 7.4162*10-10 W for phase A, and
LSB = (VMAX*IMAX / IB_8) * 7.4162*10-10 W for phase B
These parameters are added to compensate for input noise and truncation in
the squaring calculations for I2 and V2.
35
23
QUANT_IA
QUANT_IB
0
0
LSB=VMAX2*7.4162*10-10 V2,
LSB= (IMAX2/IA_82)*7.4162*10-10 A2 for phase A and
LSB= (IMAX2/IB_82)*7.4162*10-10 A2 for phase B.
Scale factor for the VAR calculation. The default value of KVAR should never
need to be changed.
3B
KVAR
6448
for MUX_DIV = 1
12880
for MUX_DIV = 2
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