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PDF PL3223 Data sheet ( Hoja de datos )
| Número de pieza | PL3223 | |
| Descripción | Multi-Function 3-Phase Electrical Energy Meters | |
| Fabricantes | FXXC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PL3223 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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FXXC®
Function Feature
IC FOR MULTI-FUNCTION THREE-PHASE
ELECTRIC AL ENERGY METERS
PL3223
voltage detecting, it has interrupt output.
It is compatible with both three-phase
three-wire and three-phase four-wire.
Current channel embeds Programmable
Gain Amplifier (PGA).
High accuracy electrical energy
measurement. It matches IEC678/6103
GB/T 1721 and IEC1268 GB/T 17882.
Support digital phase correction and
linear compensation of small current
segment
The error of active electrical energy
measurement is less than 0.1% in the
dynamic area 1000:1.
Built-in digital temperature sensor,
support segment compensation of
temperature
The error of reactive electrical energy
measurement is less than 0.2% in the
dynamic area 1000:1.
Constant of electrical energy meter and
starting current can be calibrated by
digit.
It can accurately measure the reactive
electrical energy of up to 21st harmonic.
SPI interface, which facilitate control of
external microprocessor.
Active/reactive calibration meter pulse
output
AD waveform data of real time voltage
and current of all phases
Measuring instantaneous active/reactive,
line voltage frequency and RMS value of
voltage/current.
Temperature standard of industry class,
QFP44 pin packaging.
Simultaneously supply split phase and
mergence phase active/reactive and
symbolic indication
It can select energy accumulation mode
of merge nce phase (algebra
msummation/absolute value summation)
u.coTwo stepping motor drive output, which
t4can simultaneously output
eactive/reactive power
www.datasheLose of phase/ under-voltage/ over
Description of the functions
PL3223 is a high accuracy, multifunctional
three-phase electrical energy measurement
chip, which support SPI interface and power
pulse output, and has self-defining frequency
division ratio wheel-drive pulse output. PL3223
integrates second-order - ADC, which refer
to voltage source, temperature sensor, power
source detecting, all active/reactive electrical
energy measurement and voltage/current
RMS value, and digital signal processing
module measured by line voltage frequency.
-1-
1 page  
PL3223
SPI Sequential Character Table
Parameter Specification
Unit
Write
sequential
t1
t2
t3
t4
t5
t6
t7
Read
sequential
t8
200
200
200
10
5
200
300
100
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
Notes
CS falling edge to the first leading edge of SCK
SCLK high level pulse width
SCLK low level pulse width
Time effective data reach before SCK leading edge
Time effective data retain after SCK leading edge
Minimal transmission time of data byte
Time CS retains after SCK leading edge
Effective time of data output after SCK falling edge
SPI sequential figure of read operation
SPI sequential figure of write operation
5
5 Page 
PL3223
AD User Interface of 3223
frequency can be obtained by the result that
PL3223 can directly read AD data of 250,000 divide this data.
three-phase voltage and current through
interior registers. The method is that writing
1byte data to register SEL_CH 1CH to
appoint voltage access need to be measured.
1 is A phase 2 is B phase 3 is C phase
PL3223 indicates AD conversion state through
pin CONVER. Pin CONVERT outputs pulse
signal of 5K frequency under normal state.
CONVERT is set low for once means finish of
AD conversion for once. User can use CPU to
respectively read 2bytes voltage and current
data from address 2C~2DH and 2E~2FH
through SPI.
Measurement of RMS Value of Voltage and
Current
PL3223 provides information of RMS value of
current line voltage and line current through a
simplified RMS value measurement unit.
PL3223 does not provide exact
Root-Mean-Square value of voltage and
current. It provides square accumulating value
in a fixed period. User reads out this square
accumulating value and divide total amount of
samples, and then extract it. The result is the
RMS value of line voltage and line current. The
detail steps are similar to frequency
Frequency Measurement
measurement: Firstly write data to register
PL3223 adopts embedded pass zero detecting
technology to supply frequency measurement
SEL_CH 1CH to appoint voltage access need
to be measured 1 is A phase 2 is B phase
function of line voltage. Before measuring 3 is C phase. Then write 1byte any data such
frequency, user firstly need to write data to as 00 to 30H start up RMS value
register SEL_CH 1CH to appoint voltage measurement function. During the time of
access need to measure. 1 is A phase 2 is B measuring RMS value PL3223 measures time
phase 3 is C phase Then conducts one write
operation to read-only address 30H through
SPI, namely write any 1byte data such as 00.
Here, frequency measurement function is
started up. After startup, PL3223 enters the
state of frequency and RMS value
measurement. Here, the functions of
active/reactive measurement and the other are
in the normal work state.
PL3223 shall measure the time that serially
appear 50 times and positive pass zero. Thus,
once of frequency measurement will last at
least 1 second for line voltage of 50Hz
frequency. From waiting for enough time to
completing all measurement, 2bytes data is
read out from register DFC (30H, 31H). The
serially appear 14 times and positive pass
zero. Thus, time of once of RMS value
measurement will last at least 280ms for line
voltage of 50Hz frequency. From waiting for
enough time to completing all measurement,
4bytes of square integrated value of line
voltage is read out from register VRMS 34H
37H . 4bytes of square integrated value of line
current is read out from register IRMS 38H
38H . 2bytes of sample points value is read
out from M_CNT 3CH 3DH . RMS value of
Line voltage/current can be obtained by
calculating the result that square integrated
value divides sample point number and then
extract it,
Namely,
data usually is about 5000 of decimalization in
the case of 50Hz line voltage. Line voltage
11
VRMS = VRMS / M _ CNT
I RMS = IRMS / M _ CNT
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PL3223.PDF ] | |
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