43
First-In First-Out(FIFO) mode: When the 8 groups data is full, the next trigger condition
comes, the new waveform data will starts from the
fi
rst group, and cover the original data
of the
fi
rst group, record by loop.
Fill and Hold mode: When the 8 groups data is full, it does not respond to any waveform
triggering condition. Only when all the waveform data is reset to emptied, waveform
capturing function will be normal. When the waveform data is emptied, new waveform data
starts from the 1st group.
Note: Since the amount of each waveform group data is large, it takes more time to
write into the
fl
ash memory. Therefore, waveform capture only responds to one triggering
condition at one time. During the process of writing data into the
fl
ash memory, it does not
respond to new triggering condition. After the process of memory writing, it will respond to
new waveform triggering condition. The waveform data will not be lost when the power is
o
ff
.
4.11.7 Waveform capture triggering condition
4.11.7.1 Manual triggering
Manually trigger one group waveform capture can be operating the corresponding register
or from the meter front.
DI triggering waveform capture is only suitable for the DI input on the meter itself, and the
DI waveform capture function is only valid when the DI function is set to waveform capture.
This setting can also be operating via meter front.
The modbus address assigns two bits for the DI channel. When they are set as “00”, it
means DI triggering Disabled, “01”means DI triggering will be implemented when DI state
changes from OFF to ON, “10”means DI triggering will be implemented when DI state
changes from ON to OFF, “11“means DI triggering will be implemented when DI state has
any change.
As mentioned in voltage sag event logging, when voltage sag triggering waveform is
enabled, both event logging and waveform capture will be implemented at the same time
once a voltage sag happens.
As mentioned in voltage swell event logging, when voltage swell triggering waveform is
enabled, both event logging and waveform capture will be implemented at the same time
once a voltage swell happens.
4.11.7.2 DI triggering
4.11.7.3 Voltage sag triggering
4.11.7.4 Voltage swell triggering