Teridian 71M6521, User Manual

Page: 46 / 112

71M6521 Demo Board User’s Manual
Page: 46 of 111
© 2005-2009 TERIDIAN Semiconductor Corporation
Revision 2.18
0x1054 DEGSCALE 0
This constant is used for the calculation of
DELTA_T
.
0x1058 QUANT_IA 0
This parameter is added to compensate for input noise and truncation in
the squaring calculations for I
2
0x105C TEMP_NOM 7.04*10
7
The reference temperature read from MPU location
TEMP_RAW
is
stored in this location when the unit is calibrated.
0x1060
QUANTB
0
This parameter is added to the Watt calculation for element 1 to
compensate for input noise and truncation. Same LSB as
QUANTA.
0x1064 CRV0 0
Smoothing factors for low currents on element 0 and 1.
I
RMS
is the operating RMS current.
0x1068 CRV1 0
0x106C QUANT_IB 0
This parameter is added to compensate for input noise and truncation in
the squaring calculations for I
2
0x1070 CREEP_0 8311
These parameters establish the creep threshold.
LSB = 6.6952*10
-13
*
VMAX
*
IMAX
*3600 W
The default values correspond to 2.5 W.
0x1074 CREEP_1 8311
0x1078 VNOMINAL 1.27*10
8
This parameter defines the nominal voltage to be used for the power
calculation when tampering is detected.
14
13
2
3600
10 6952 . 6
VMAX
LSB
−
⋅
=
The default value corresponds to 230V, when
VMAX
= 600V
0x107C WNOMINAL 7,646,277
This parameter defines the nominal wattage to be used when magnetic
tampering is detected.
LSB = 6.6952*10
-13
*
VMAX
*
IMAX
*3600 W
0x1080 PPMC1 +150 Linear temperature compensation factor.
0x1084 PPMC2 -392 Quadratic temperature compensation factor.
Table 1-17: CE memory locations (71M6521BE)
The CESTATE register, shown in Table 1-18, is used to configure the CE.
Bit Significance Bit Significance
0 PULSE_SLOW 8 SAG_CNT[0]
1 PULSE_FAST 9 SAG_CNT[1]
2 I0_SHUNT 10 SAG_CNT[2]
3 I1_SHUNT 11 SAG_CNT[3]
4
MAGNETIC_TAMPER
12
SAG_CNT[4]
5 NEUTRAL_TAMPER 13 SAG_CNT[5]
6 FREQSEL 14 SAG_CNT[6]
7 Reserved 15 SAG_CNT[7]
Table 1-18: CESTATE Register