INTRODUCTION

THE SA2002D PIN PROGRAMMABLE MONOCHIP

METER

This application note describes the functionality of the

SA2002D metering integrated circuit using the PM2002DP

evaluationmodule.

TheSA2002enablesthemetermanufacturertobuildameter

that measures the energy consumption, and records it toa

mechanical counter.Energyflowdirectionaswellasenergy

metering activity is indicated by means of LEDs. This

applicationnotewillfocusonthepracticaluseoftheSA2002D,

more detailed information specific to the SA2002D can be

foundintheapplicabledatasheet.

Application Note:

EnergyM eter Evaluation Module

PM2002DP

1/10

SPEC-0088(REV.3)

27-08-03

Setting

6A/220V

10A/220V

20A/220V

30A/220V

40A/220V

60A/220V

80A/220V

PinStatus

R0=0,R1=0,R2=1

R0=0,R1=0,R2=0

R0=1,R1=0,R2=0

R0=1,R1=0,R2=1

R0=0,R1=1,R2=0

R0=0,R1=1,R2=1

R0=1,R1=1,R2=0

Calibrated

LEDimp/kWh

6400

6400

3200

3200

1600

1600

800

CONNECTORSONMODULE

The PM2002DPmoduleconnectsdirectlytoliveandneutral

onSCK1.Themoduleisreferencedtoliveandshouldbekept

inmindwhenconnectingtestequipmenttothemodule.The

currentismeasuredbytheshuntonthetopofthePCB.Theleft

terminaloftheshuntisconnectedtolive.Theliveoutwillbe

connectedtotherightterminaloftheshunt.

Table1:Asummaryofthepinsettingspossiblewiththe

SA2002D.Pinstatus0indicatesconnectiontoVSSand1

indicatesconnectiontoVDD.

Name

SCK1

JP2

JP3

FunctionDescription

Mainsconnectorformodulepowerandvoltage

sense

Optionalcurrenttransformerconnector.

(Underneathshuntresistor)

OptionalSteppermotorconnector.(Removejumper

J6todisconnectimpulsecounter)

Table2:Connectordescriptions

LiveIn

Neutral

LiveOut

Figure1:Connectionandjumpersettingsfor80A/220Vbi-directionalmetermodule