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PDF ATT7030A Data sheet ( Hoja de datos )
| Número de pieza | ATT7030A | |
| Descripción | Active Energy Metering IC User Manual | |
| Fabricantes | Actions | |
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High accuracy, 3-phase
active energy metering IC ATT7030A
ATT7030A User Manual
Date: 2005-03-28
Rev: 1.04
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Page 1 of 17
Rev 1.04
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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§1.4 Pin definition
High accuracy, 3-phase
active energy metering IC ATT7030A
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
Pin
Name
I/O
Description
1
RESET
I ATT7030A reset, low active. Internally pull-high
47K resistance.
2 SIG O SIG is low level when normal work.
3,4 V1P/V1N I Analog inputs for A phase current channel. The
maximum input signal level is ±1.5V. Both inputs
have internal ESD protection circuitry and in
addition an over voltage of ±6V can be
sustained on these inputs without risk of
permanent damage.
5 REFCAP O Internal reference voltage, 2.4V, can be
connected to external reference voltage. This
pin should be decoupled with a 10µF and a
0.1uF capacitor to AGND.
6,7 V3P/V3N I Analog inputs for B phase current channel. The
maximum input signal level is ±1.5V. Both inputs
have internal ESD protection circuitry and in
addition an over voltage of ±6V can be
sustained on these inputs without risk of
permanent damage.
8 AGND AGND The analog ground is the ground reference for
all analog circuitry.
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High accuracy, 3-phase
active energy metering IC ATT7030A
§2.5 power direction judgement
ATT7030A supplies real time active power direction indication.
Negative power indication REVP: if any one phase active power is negative, REVP
would output high level, goes low when 3 phase power is positive.
Negative power indication NEGP: if 3-phase combined active power is negative,
NEGP would output high level, goes low when 3-phase combined active power is positive.
Noticed that NEGP be effectual only in algebraic mode. If we select absolute addition
mode, NEGP would output low level all the time.
§2.6 Voltage-depreciation detecting
ATT7030A can detect A/B/C 3 phase voltage-depreciation status basing on
configured threshold voltage.
In 3-phase 4-wire mode, threshold voltage is about 50mv for voltage channel input. In
3-phase 3-wire mode, threshold voltage is about 300mv for voltage channel input.
Voltage-depreciation status could be indicated by power-cut indication PA/PB/PC.
Power-cut indication PA/PB/PC output high level denotes A/B/C 3-phase voltage is
less than configured threshold voltage, output low level denotes A/B/C 3-phase voltage is
higher than configured threshold voltage.
§2.7 Hardware port detecting
ATT7030A can detect hardware port automatically. System will reset when hardware
port changes.
ATT7030A has external input port: S0/S1/SCF, SEL, and SUM.
§2.8 Application for 3-phase 3-wire and 3-phase 4-wire
In 3-phase 4-wire mode, ATT7030A uses 3 element measurement method, 3-phase
combined power calculated formula is:
••
••
••
P4=U A I A + U B I B + U C I C
In 3-phase 3-wire mode, ATT7030A uses 2 element measurement method, 3-phase
combined power calculated formula is:
••
••
P3=U AB I A + U CB I C
In 3-phase 3-wire mode, phase B channel doesn’t take part in power measurement. Only
phase A and phase C channel take part in power measurement.
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11 Page | ||
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| PDF Descargar | [ Datasheet ATT7030A.PDF ] | |
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