SAMES PM9103APA, PM9103APE Datasheet

SA9103 / SA9603C APPLICATION NOTE

sames

PM9103AP

SINGLE PHASE POWER/ENERGY METERING MODULE

SERIAL INTERF ACE

FEATURES

n Performs both power and energy

measurement

n Meets the accuracy requirements for

Class 1 AC Watt hour meters

n Protected against ESD
n Total power consumption rating below

500mW (excluding current sensing)

DESCRIPTION

The SAMES single phase power/energy metering module, the PM9103AP, provides
energy data via a RS232 compatible serial interface.

Energy consumption is determined by the power measurement being integrated over
time.

The method of calculation takes the power factor into account.
The output of this innovative universal power/energy meter is ideally suited for energy

calculations in applications using a µ-controller.
The application utilises the SAMES SA9103CP, SA9103EP or SA9603CP power

metering integrated circuits for power 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.

n Uses a shunt resistor for current

sensing

n Operates over a wide temperature

range

n Serial interface having a RS232

Protocol

4309 PDS038-SA9103-001 REV.C 11-08-98

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PM9103AP

BLOCK DIAGRAM

LIVE

IN
OUT

VOL TAGE SENSE

SHUNT

POWER
SUPPLY

SA9103
SA9603

POWER

METER

DR-01448

OPTO
COUPLER

OPTO
COUPLER

D-sub CONNECTOR

NEUTRAL
NEUTRAL

NEUTRAL

ABSOLUTE MAXIMUM RATINGS*

Parameter Symbol Min Max Unit

Supply Voltage (Note 1) V
Current Sense Input (Note 1) V
Storage Temperature T

Operating Temperature T
Max Current I
through Sensor I

STG

MAX

MAX

AC

IV

-2.5 +2.5 V

-25 +125 °C

O

-10 +70 (Note 2) °C

540 V

800 (Note 3) A

2000 (Note 4) A

Note 1: Voltages are specified with reference to Live.
Note 2: The SA9103 and SA9603C integrated circuits are specified to operate over the

temperature range -10°C to +70°C. The module functionality will however

depend upon the external components used.
Note 3: t = 500ms
Note 4: t = 1ms

*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. This is a stress rating only. Functional operation of the device
at these or any other conditions above those indicated in the operational sections of this
specification, is not implied. Exposure to Absolute Maximum Ratings for extended
periods may affect device reliability.

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PM9103AP

ELECTRICAL CHARACTERISTICS

(Over the temperature range -10°C to +70°C, unless otherwise specified. Power
consumption figures are applicable to the PM9103APE only.)

Parameter Symbol Min Typ Max Unit Condition

Supply Voltage V

AC

180 230 265 V PM9103APE

(Continuous) 90 115 135 V PM9103APA
Power Measurement P

RNG

-18400 18400 W Specified

range accuracy
Power Consumption

1

800 mW VAC = 230V

Supply direct
from mains

Isolation Voltage

2

V

IS

2500 V Continuous

Opto-coupler Output
Current I

O

10 mA VOL = 1V

Opto-coupler Input
Current I

I

10 mA

Note 1: Power consumption specifications exclude power consumed by the current

sensor.

Note 2: Isolation voltage may be specified, depending on customer requirements.

CONNECTION DESCRIPTION

Designation Description

MAINS

Voltage supply connection to Neutral line
Voltage supply connection to Live line

NEUTRAL IN Connection to positive side of current sensor
NEUTRAL OUT Connection to negative side of current sensor
SK1

Serial Input

D-sub connector
9-Pin

Serial Output

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