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PDF SA9604 Data sheet ( Hoja de datos )

Número de pieza SA9604
Descripción THREE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH SERIAL SPI INTERFACE
Fabricantes Sames 
Logotipo Sames Logotipo



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No Preview Available ! SA9604 Hoja de datos, Descripción, Manual

sames
SA9604A
THREE PHASE BIDIRECTIONAL POWER/ENERGY
METERING IC WITH SERIAL SPI INTERFACE
FEATURES
s Performs bidirectional active and s Protected against ESD
reactive power/energy measurement s Uses current transformers for current
s Voltage and frequency measurement
sensing
s Individual phase information s Excellent long term stability
accessable
s Operates over a wide temperature
s SPI communication bus
range
s Meets the IEC 521/1036 Specification s Precision Voltage Reference on-chip
requirements for Class 1 AC Watt hour
meters
DESCRIPTION
PIN CONNECTIONS
The SAMES SA9604A Bidirectional Three
Phase Power/Energy metering integrated
circuit has a serial interface, ideal for use
with a µ-Controller. The SA9604A performs
the calculation for active and reactive power
or energy, mains voltage sense and
frequency.
The measurements performed and the
resultant register values are provided for
individual phases.
The integrated values for active and reactive
energy, as well as the mains voltage sense
and frequency information, are accessable
through the SPI as 24 bit values.
This innovative universal three phase power/
energy metering integrated circuit is ideally
suited for energy calculations in applications
such as primary industrial metering and
factory energy metering and control.
The SA9604A integrated circuit is available
in both 20 pin dual-in-line plastic (DIP-20),
as well as 20 pin small outline (SOIC-20)
package types.
IIP 2
I IN 2
IVP3
IIP 3
I IN 3
VDD
F1 50
SCK
D0
OSC1
1 20 IVP2
2 19 IIN 1
3 18 IIP 1
4 17 IVP1
5 16 G ND
6 15 VREF
7 14 VSS
8 13 CS
9 12 DI
10 11 O SC2
DR-01306
Package: DIP-20
SOIC-20
SA9604A
PDS039-SA9604A-001
REV. 5
1/20
29-05-00

1 page




SA9604 pdf
SA9604A
1. Power calulation
In the Application Circuit (Figure 1), the voltages from Line 1, Line 2 and Line 3, are
converted to currents and applied to the voltage sense inputs IVN1, IVN2 and IVN3.
The current levels on the voltage sense inputs are derived from the mains voltage
(3 x 230 V ) being divided down through voltage dividers to 14V . The resulting
AC RMS
input currents into the A/D converters are 14µARMS through the resistors R15, R16 and
R.
17
For the current sense inputs, the voltages across the current transformers terminating
resistors are converted to currents of 16µARMS for rated conditions, by means of
resistors R8, R9 (Phase 1); R10, R11 (Phase 2); and R12, R13 (Phase 3).
The signals providing the current information are applied to the current sensor
inputs: IIN1; IIP1; IIN2; IIP2; IIN3; and IIP3.
2. Analog Input Configuration
The input circuitry of the current and voltage sensor inputs are illustrated below.
These inputs are protected against electrostatic discharge through clamping
diodes.
The feedback loops from the outputs of the amplifiers A and A generate virtual
IV
shorts on the signal inputs. Exact copies of the input currents are generated for the
following analog signal processing circuitry.
V DD
II P
CU RR E N T
SE NS OR
INPUT S
V SS
VDD
AI
II N
V SS
VDD
IV P
VOL T AGE
SE NS OR
INPUT
V SS
AV
DR-0 1 3 0 8
GN D
3. Electrostatic Discharge (ESD), Protection
The SA9604A Integrated Circuits inputs/outputs are protected against ESD.
sames
5/20

5 Page





SA9604 arduino
Phase 1
Phase 2
Phase 3
F
dr-01464
1mS
+5V
An y se qu e nce o f 2 4 p ulses is e q ua l to 1 m e asu re m en t cycle
0V (Vss)

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