MAXQ3183 Maxim, MAXQ3183 Datasheet - Page 63
MAXQ3183
Manufacturer Part Number
MAXQ3183
Description
The MAXQ3183 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load
Manufacturer
Maxim
Datasheet
1.MAXQ3183.pdf
(102 pages)
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V
produces full-scale ADC output; defined by the hard-
ware voltage transducer ratio V
input voltage V
Default conditions are V
dependent.
I
produces full-scale ADC output; defined by the hard-
ware current transducer ratio I
input voltage V
Table 5. Meter Unit Definitions
Table 6. Virtual Register Coefficients
FS
Current RMS: X.IRMS
Pulse output current RMS
THR1 or THR2, when pulse output configured to IRMS
Voltage RMS: X.VRMS
Pulse output RMS voltage
THR1, or THR2 when pulse output configured to VRMS
Energy: X.ACT, X.REA, X.APP, X.EAPOS, X.EANEG, X.ERPOS,
X.ERNEG, X.ES
Fundamental Energy: X.ACTF, X.REAF, X.APPF, X.EAFPOS,
X.EAFNEG, X.ERFPOS, X.ERFNEG, X.ESF
Pulse Output Energy: THR1 or THR2
Power: PWRP.X, PWRQ.X, PWRS.X
When X.ESF Contains Amp-Hours: X.ESF
OCLVL, NOLOAD, I1THR, I2THR
OVLVL, UVLVL
Power:
PWRP.X, PWRQ.X, PWRS.X, PWRPF.X,
PWRQF.X, PWRSF.X
Voltage:
V.X
Current:
I.X
Energy:
ENRP.X, ENRQ.X, ENRS.X, ENRPF.X,
ENRQF.X, ENRSF.X
FS
is full-scale current. This is the input current that
is full-scale voltage. This is the input voltage that
VIRTUAL REGISTER
REGISTER OR ACCUMULATOR
FSADC
FSADC
Low-Power, Multifunction, Polyphase AFE
V
______________________________________________________________________________________
FS
:
:
= V
FSADC
FSADC
with Harmonics and Tamper Detect
= 1.024V. V
TR
x V
TR
TR
and ADC full-scale
and ADC full-scale
TR
(1 LSB), DEFINED BY USER
is design
OUTPUT RESOLUTION
VOLT_LSB
PWR_LSB
AMP_LSB
ENR_LSB
MU_AMP = I
MU_VOLT = V
MU_ENR = V
MU_PWR = V
MU_AH = I
I
V
FS
FS
Default conditions are V
dependent.
Meter units are defined with respect to the base para-
meters as shown in Table 5.
When reading virtual registers, the MAXQ3183 uses the
configurable conversion coefficients AMP_CC,
VOLT_CC, PWR_CC, and ENR_CC to return meaningful
data. Table 6 describes how to set the coefficients.
/2
/2
16
16
FS
FS
FS
FS
FS
x t
/2
x I
/2
x I
FR
24
24
FS
FS
/2
16
METER UNIT (1 LSB)
/2
x t
I
32
FS
FR
VOLT_CC = MU_VOLT/VOLT_LSB
/2
= V
PWR_CC = MU_PWR/PWR_LSB
AMP_CC = MU_AMP/AMP_LSB
ENR_CC = MU_ENR/ENR_LSB
16
FSADC
FSADC
COEFFICIENT
= 1.024V. I
x I
TR
TR
is design
63
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