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SA9607MSA

Single Phase Power/Energy Metering IC with Tamper Detection

South African Micro Electronic Systems 

SA9607M

Earth loop tamper indication (ELT)

If the power measurments from both current channels differ

by more than 12.5%, (indicating a earth loop tamper condition),

the ELT output is set to zero. The SA9607M continues to

generate output pulses from the larger of the two measured

powers in this condition. The ELT output is active low.

Direction indication (DIRO)

The SA9607M provides information about the energy flow

direction on pin DIRO.

A logic 1 on pin DIRO indicates reverse energy flow. Reverse

energy flow is defined as the condition where the voltage

sense input and current sense input are out of phase (greater

than 90 degrees).

Positive energy flow, when voltage sense and current sense

input are in phase, is indicated on pin DIRO a logic 0.

The DIRO pin may be used to drive a LED in order to indicate

reverse energy.

Signal

Output

DIRO

Value Description

1 Reverse energy flow

0 Forware energy flow

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