PM9109BFA Ver la hoja de datos (PDF) - South African Micro Electronic Systems

Número de pieza

componentes Descripción

Fabricante

PM9109BFA

MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE

South African Micro Electronic Systems 

PM9109BF

Values for RSH of less than 200µΩ should be avoided.

R1 = R2 = (IL/16µARMS) * RSH/2

Where

IL = Line current

RSH = Shunt resistor

Rbe3A,seRle3Bc,teRd6

saondthRa4t

set

the

the current for the voltage sense input. The values should

input current into the voltage sense input (virtual ground)

is set to 14µA.

Rco7nddeitfiionness

all

are

on-chip

set. R7

bias

may

baendvarreiefedrewnitcheinc±u1rr0e%ntsf.orWciathlibRra7ti=on2p4ukrΩp,osoepsti.mAunmy

change to R7 will affect the energy calculation quadratically.

XTAL is a colour burst TV crystal (f = 3.5795MHz) for the oscillator. The oscillator

frequency is divided down to 1.7897MHz on-chip and supplies the A/D converters

and the digital circuitry.

10. Demonstration Software

The accompanying diskette requires an IBM or compatible PC with MS-DOS

installed. This software, supplied on a 1.4M 3½" disk, will allow the user to read and

write settings from/to the demonstration unit.

Context sensitive help screen for each input field or command prompt are available

by invoking [alt] H or [F1] key.

An introduction is available by pressing the [F1] key immediately after installation.

INSTALLATION

1. Copy the file SA9109.exe to the directory from which to operate.

2. Connect the demonstration board to either COM1 or COM2 (default) of the

PC.

3. The demonstration board may now be connected to the load and the mains

supply attached as suggested in the Functional Description section of the

appropriate Application Note.

4. At the DOS prompt type SA9109 and carriage return [CR] to invoke the

programme.

10/18

sames

Share Link: