Datasheet
71M6533/G/H and 71M6534/H Data Sheet FDS_6533_6534_004
104 Rev 2
5.3.11 Noise Suppression and Version Parameters
Table 65 shows the CE parameters used for suppression of noise due to scaling and truncation effects.
Table 65: CE Parameters for Noise Suppression and Code Version
CE
Address
Name Default Description
0x26
QUANTA
0
These parameters are added in channel A to the Watt calculation
to compensate for input noise and truncation.
LSB = (VMAX*IMAX / In_8) *1.04173*10
-9
W
0x27
QUANTB
0
0x28
QUANTC
0
0x2A
QUANT_VARA
0
These parameters are added to the VAR calculation for element
A and B to compensate for input noise and truncation.
LSB = (VMAX*IMAX / In_8) * 1.04173*10
-9
W
0x2B
QUANT_VARB
0
0x2C
QUANT_VARC
0
0x2E
QUANT_IA
0
These parameters are added to compensate for input noise and
truncation in their respective channels in the squaring calculations
for I
2
and V
2
.
LSB=VMAX
2
*5.08656*10
-13
V
2
and
LSB= (IMAX
2
/In_8
2
)* 5.08656*10
-13
A
2
0x2F
QUANT_IB
0
0x30
QUANT_IC
0
0x35 0x63653333
Text strings holding the CE version information as supplied by
the CE data associated with the CE code. For example, the
words 0x63653333 and 0x61303463 form the text string
“ce33a04c”.
These locations are overwritten in operation.
0x36 0x61303463
0x37 0x00000000
5.3.12 CE Calibration Parameters
Table 66 lists the parameters that are typically entered to effect calibration of meter accuracy.
Table 66: CE Calibration Parameters
CE
Address
Name Default Description
0x10
CAL_IA
16384
These constants control the gain of their respective channels. The
nominal value for each parameter is 2
14
= 16384. The gain of each
channel is directly proportional to its CAL parameter. Thus, if the
gain of a channel is 1% slow, CAL should be increased by 1%.
CAL_ID is used to calibrate the neutral current input.
0x11
CAL_VA
16384
0x12
CAL_IB
16384
0x13
CAL_VB
16384
0x14
CAL_IC
16384
0x15
CAL_VC
16384
0x16
CAL_ID
16384
0x18
PHADJ_A
0
These constants control the CT phase compensation. No com-
pensation occurs when PHADJ_X = 0. As PHADJ_X is increased,
more compensation (lag) is introduced. The range is ± 2
15
– 1. If it
is desired to delay the current by the angle Φ, the equations are:
Φ⋅−
Φ⋅
=
TAN
TAN
XPHADJ
0131.01487.0
02229.0
2_
20
at 60Hz
Φ⋅−
Φ⋅
=
TAN
TAN
XPHADJ
009695.01241.0
0155.0
2_
20
at 50Hz
0x19
PHADJ_B
0
0x1A
PHADJ_C
0