INTRODUCTION

THE SA2002D PIN PROGRAMMABLE MONOCHIP

METER

This application note describes the functionality of the

SA2002D metering integrated circuit using the PM2002DP

evaluation module.

The SA2002 enables the meter manufacturer to build a meter

that measures the energy consumption, and records it to a

mechanical counter. Energy flow direction as well as energy

metering activity is indicated by means of LEDs. This

application note will focus on the practical use of the SA2002D,

more detailed information specific to the SA2002D can be

found in the applicable datasheet.

sames

sames

Application Note:

Energy Meter Evaluation Module

PM2002DP

1/10

SPEC-0088 (REV. 1)

08-11-00

Setting

6A / 220V

10A / 220V

20A / 220V

30A / 220V

40A / 220V

60A / 220V

80A / 220V

Pin Status

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

LED imp/kWh

6400

6400

3200

3200

1600

1600

800

CONNECTORS ON MODULE

The PM2002DP module connects directly to live and neutral

on SCK1. The module is referenced to live and should be kept

in mind when connecting test equipment to the module. The

current is measured by the shunt on the top of the PCB. The left

terminal of the shunt is connected to live. The live out will be

connected to the right terminal of the shunt.

Table 1: A summary of the pin settings possible with the

SA2002D. Pin status 0 indicates connection to VSS and 1

indicates connection to VDD.

Name

SCK1

JP2

JP3

Function Description

Mains connector for module power and voltage

sense

Optional current transformer connector.

(Underneath shunt resistor)

Optional Stepper motor connector. (Remove jumper

J6 to disconnect impulse counter)

Table 2: Connector descriptions

Live In

Neutral

Live Out

Figure 1: Connection and jumper settings for 80A / 220V bi-directional meter module