SA9602F/SA9602J
The diagram below shows the behavior of the direction indication, DIR, when energy
reversal takes place. The timing period for the DIR signal to change state, t
DIR
, will
be defined by the time it takes for the integrater to count down from its value at the
time of energy reversal. This is determined by the energy consumption rate.
I
t
V
t
D IR
D R - 01 283
t
t D IR
The square wave signal on FMO indicates the polarity of the mains voltage.
V
t
FM O
t
t
M A IN S
D R -0 1 2 8 4
Due to comparator offsets, the FMO low to high transition can occur within a range
as shown above. The time between succesive low to high transitions will be equal
to the mains voltage period.
sames
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SAMES [ SAMES ]
