FEATURES

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Meets the IEC 61036 / 60687 accuracy requirements for

class 0.5 active energy measurement

Uni-directional and Bi-directional power and energy

measurement

Current sensing via on-board shunt or CT.

Selectable rated conditions, LED pulse rates and counter

resolutions

sames

PM2102DPD Application Note:

Energy Meter Evaluation Module

PM2102DPD

1/16

SPEC-0994 (REV. 1)

02-10-02

Figure 1: Block Diagram

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On-board precision calibration

On-board impulse counter or drive facility for stepper-

driven counters

Energy flow indicator

On-board capacitive supply

Easy accessible test pins

PRELIMINARY

INTRODUCTION

This application note describes the SAMES PM2102DPD

application module to demonstrate the use of the SA2102D as

a low cost, accurate watt-hour meter.

The PM2102DPD module surpasses the accuracy

requirements as quoted in IEC 60687 class 0.5 specification

for both unity and ±0.5 power factor over a dynamic range of

800.

The measured energy consumption is displayed by means of

an on-board counter. Provision has been made for a stepper

motor counter to be connected. The Pulse LED is used for

calibration purposes, its pulse rate can be selected for either

normal or fast operation. When in normal operation, the pulse

rate is a low frequency and

is proportional to the average

power consumption. In fast mode the LED pulse output is set

at a high frequency and is proportional to the instantaneous

power consumption. This mode is useful for faster calibration

times. The Direction LED is used to indicate the energy

direction.

The metering module can easily be configured for a broad

range of pulse constants at different meter ratings. Various

examples and standard tables are presented in this application

note.

Load

Voltage

sensing

Current

sensing

Power

Supply

Stepper

Counter

SA2102D

Impulse

counter

Direction

Pulse

Vdd

GND

Vss

Neutral

Live

JP3

Vdd