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PDF SA2005 Data sheet ( Hoja de datos )

Número de pieza SA2005
Descripción Programmable Three Phase Power / Energy Metering IC for Stepper Motor / Impulse Counter Applications
Fabricantes Sames 
Logotipo Sames Logotipo



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No Preview Available ! SA2005 Hoja de datos, Descripción, Manual

Three Phase Bidirectional Power/Energy
Metering IC with Instantaneous Pulse Output
SA2005F
sames
FEATURES
n Functionally compatible with the SA9105F with reduced
external components
n Performs bidirectional one, two or three phase power and
energy measurement
n Meets the IEC 521/1036 Specification requirements for
Class 1 AC Watt hour meters
DESCRIPTION
The SAMES SA2005F is an enhancement of the SA9105F. A
precision oscillator and the loop capacitors are integrated on
chip.
The SAMES SA2005F three phase bidirectional power/energy
metering integrated circuit generates pulse rate outputs for
positive and negative energy directions. The frequency of the
pulses is proportional to the measured power consumption.
The SA2005F performs active power calculation.
The method of calculation takes the power factor into account.
n Operates over a wide temperature range
n Uses current transformers for current sensing
n Easily adaptable to different signal levels
n Precision voltage reference on chip
n Precision oscillator on chip.
n Protected against ESD
Energy consumption is determined by integrating the power
measurement over time.
This innovate universal three phase power/energy metering
integrated circuit is ideally suited for applications such as
residential and industrial energy metering and control.
The SA2005F integrated circuit is available in 20 pin dual-in-
line plastic (DIP-20), and 20 pin small outline (SOIC-20)
package types.
IIN1
IIP1
IVN1
IIN2
IIP2
IVN2
IIN3
IIP3
IVN3
GND
I1
X
V1
I2
X
V2
I3
X
V3
VDD VSS
PGM0 PGM1
INTEGRATE
AND
AVERAGE
POWER
TO
PULSE
RATE
FOUT
DIR
REF TIMING & CONTROL
OSC
Dr-01570
VREF
TEST
Figure 1: Block Diagram
TCLK
SPEC-0042 (REV. 1)
1/10
03-07-00

1 page




SA2005 pdf
SA2005F
sames
Voltage Sense Inputs (IVN1, IVN2, IVN3)
The current into the voltage sense inputs (virtual ground)
should be set to 14µARMS at rated voltage conditions. The
individual mains voltages are divided down to 14VRMS per
phase. The resistors R8, R9 and R10 set the current for the
voltage sense inputs. The voltage sense inputs saturate at an
input current of ±25µA peak.
Pulse Programming Inputs (PGM0, PGM1)
The pulse programming inputs PGM1 and PGM0 define the
representation of energy measured by the device on FOUT.
The table below shows the difference between the various
modes.
Frequency
Mode PGM1 PGM0 at rated
conditions
0 00
64Hz
1 01
64Hz
2 10
64Hz
3 11
1160Hz
Forward
Pulse
Width
1.14ms
1.14ms
1.14ms
71µs
Reverse
Pulse
Width
3.4ms
1.14ms
1.14ms
71µs
Test Inputs (TCLK, TEST)
The TEST and TCLK inputs are manufacturers test pins and
must be connected to VSS in a metering application.
OUTPUT SIGNALS
Direction Indication (DIRO)
The SA2005F indicates the measured energy flow direction on
pin DIR. A logic 0 on pin DIR indicates reverse energy flow.
Reverse energy flow is defined as the condition where the
voltage sense input and current sense input are out of phase
(greater than 90 degrees). Positive energy flow, when voltage
sense and current sense input are in phase, is indicated on pin
DIR as a logic 1. The DIR pin may be used to drive a LED in
order to indicate reverse energy flow.
Frequency Output (FOUT)
The sum of the measured power, from the three phases
produce a pulse rate of 64Hz or 1160Hz (mode 3), at rated
conditions on FOUT. The format of the pulse output signal,
which provides power/energy and direction information is
shown in figure 4. Refer to Pulse Programming Inputs for pulse
widths.
The following equation may be used for calculating the output
frequency:
f = 11.16 x FOUTX x ((II1 x IV1)+(II2 x IV2)+(II3 x IV3)) / 3 x IR
Where:
FOUTX = Nominal rated frequency (64Hz/1160Hz)
II1, II2, II3 = Input currents for current sensor inputs (16µA at rated
line current)
IV1, IV2, IV3 = Input currents for voltage sensor inputs (14µA at
rated line voltage)
IR = Reference current (typically 50µA)
An integrated anti-creep function ensures that no pulses are
generated at zero line currents.
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
The SA2005F integrated circuit's inputs/outputs are protected
against ESD.
POWER CONSUMPTION
The overall power consumption rating of the SA2005F
integrated circuit is less than 50 mW with a 5V supply.
MODE 0
FOUT
MODE1
FOUT
MODE2
FOUT
MODE3
FOUT
DIR
DR-01582
Note: Frequency of pulse rate in MODE 3 is 18 times higher than other modes
Figure 4: FOUT options
http://www.sames.co.za
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