PM9109BF 데이터 시트보기 (PDF) - South African Micro Electronic Systems

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PM9109BF

MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE

South African Micro Electronic Systems 

PM9109BF

Slope

The output frequency at SDO (fp) may be adjusted during cali

bration according to the formula:

fp = 11.16

x

FOSC x

3.5795E6

II IV

IR2

x

40062.5

Ks

where

FOSC =

Oscillator frequency (2MHz --- 4MHz)

II

=

IV

=

IR

=

KS

=

Input current for current sensor input

(16µA at rated line current)

Input current for voltage sensor input

(14µA at rated line voltage)

Reference current (Typically 50µA)

Slope constant (1025 --- 16384)

(Default 11389)

For default rated conditions the output frequency on SDO will be 3.5Hz. The

display is incremented after every 64th pulse on SDO as shown in the block

diagram below.

40062.5*

Pulses / s

DR-00 93 8

1/K s

1 / 64

Display

Increment

fp

USEFUL NOTES:

1.

A context sensitive help screen is available throughout the programme

and is invoked by using [F1] or [ALT]-H.

2.

Hot key features are available for a number of functions and can be

identified for use by the highlighted character of the field. For example,

[ALT]C for COMMS field.

3.

To exit from the programme [Esc] or [Alt]-X

12/18

sames

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