FDS_6533_6534_004
71M6533/71M6534 Data Sheet
These parameters are added to compensate for input noise and
truncation in their respective channels in the squaring calcula-
tions for I2 and V2.
0x2E
0x2F
0x30
0x35
0x36
0x37
QUANT_IA
0
0
0
QUANT_IB
QUANT_IC
LSB=VMAX2*5.08656*10-13 V2 and
LSB= (IMAX2/In_82)* 5.08656*10-13 A2
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”.
0x63653333
0x61303463
0x00000000
These locations are overwritten in operation.
4.3.10 CE Calibration Parameters
Table 61 lists the parameters that are typically entered to effect calibration of meter accuracy.
Table 61: CE Calibration Parameters
CE Ad-
Name
Default Description
dress
0x10
0x11
0x12
0x13
0x14
0x15
CAL_IA
CAL_VA
CAL_IB
CAL_VB
CAL_IC
CAL_VC
16384
16384
16384
16384
16384
16384
These constants control the gain of their respective channels. The
nominal value for each parameter is 214 = 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%.
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 ± 215 – 1. If it
is desired to delay the current by the angle Φ, the equations are:
0.02229⋅TANΦ
0x18
0x19
0x1A
PHADJ_A
PHADJ_B
PHADJ_C
0
0
0
PHADJ _ X = 220
at 60Hz
0.1487 − 0.0131⋅TANΦ
0.0155⋅TANΦ
0.1241− 0.009695⋅TANΦ
PHADJ _ X = 220
at 50Hz
4.3.11 CE Flow Diagrams
Figure 42 through Figure 44 show the data flow through the CE in simplified form. Functions not shown
include delay compensation, sample interpolation, scaling and the processing of meter equations.
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