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PM9109BF Datasheet

MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE

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SA9109B APPLICATION NOTE
PM9109BF
MONOCHIP SINGLE PHASE BIDIRECTIONAL
KILOWATT HOUR METERING MODULE
FEATURES
! Performs bidirectional energy meter- ! Pulse output for calibration
ing and includes a 7 digit LCD driver
with announciators
!
Total power consumption rating below
600mW
!
4 externally selectable on-chip tariff
registers
!
Uses a shunt resistor for current sens-
ing
! An additional total energy register
! Operates over a wide temperature
! Meets the accuracy requirements for
range
Class 1 AC Watt hour meters
! Demonstration software included
! Optical interface for electronic reading
according to IEC1107 Mode D
DESCRIPTION
The SAMES monochip single phase bidirectional kilowatt hour metering module, the
PM9109BF, provides all the required metering functions including energy measure-
ment, a 7 digit LCD driver, a tariff selection facility, an optical port as well as a pulse
output for calibration purposes.
Energy consumption is determined by the power measurement being integrated over
time.
This method of calculation takes the power factor into account.
This application utilises the SAMES SA9109BFA monochip single phase bidirectional
kilowatt hour metering IC for energy measurement.
As a safety measure, this application shows the current sensor connected to the neutral
line. In practice the live line may be used for current sensing, provided that the supply
connections (MAINS) are reversed on the module.
PM9109BFX
PDS038-SA9109-001
REV. 3
1/12
28-06-00
Sames
Sames



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