5.6 Changing Event Settings
88
Hysteresis Hysteresis, which applies at the set percentage to the threshold for voltage, current,
power, and similar events or at the fixed value of 0.1 Hz to the threshold for fre-
quency and similar events, prevents the detection of an excessive number of events.
Normally it is recommended to u
se a setting of 1% to 2%.
Slide
(slide reference
voltage)
When the voltage value fluctuates gradually, allows dip and swell to be judged using
the fluctuating voltage values as a reference.
See: "Appendix 6 Terminology""Slide reference voltage" (p.A28)
SENSE
(Sense)
When the RMS voltage or RMS current continues to fluctuate in excess of the thresh-
old, generates an event when the value obtained by adding the set sense value and
t
he measured value is exceeded. You can track events to identify the status when
the RMS voltage or RMS current exceeds the threshold.
"Appendix 6 Terminology""Sense" (p.A28)
Max. recordable
events
Sets the number of events that can be recorded during one measurement. When the
repeat setting is enabled, the number of events is obtained by multiplying this setting
by the repeat count. Setting
[Max. recordable events] to [9999] disables waveform
comparison events. If an event occurs for 5 min. or more at a frequency of 3 times
per second or greater while
[Max. recordable events] is set to [9999], the resulting
event data may be incomplete.
Turning events on and off and adjusting thresholds
(applies to voltage, current, and power)
Setting Contents:( ∗ : Default setting)
OFF∗
Disables the event function for the selected setting.
ON
Sets the threshold at which to enable the event function for the
selected setting.
Select a setting
[OFF]
[ON]
or
Accept setting
Cancel
Set the threshold
See: "Reference graph for
use when setting
thresholds" (p.89)
Select the setting
to change it
• Sets the voltage swell, voltage dip, and voltage interruption threshold values as percentages
of nominal voltage (Uref)*. The converted voltage is displayed to the right of the percentage
setting.
*: The nominal voltage (Uref) is obtained by multiplying the nominal input voltage (Udin) by
the VT ratio. When the VT ratio is 1, the nominal voltage (Uref) is equal to the nominal
input voltage (Udin).
• Setting the voltage swell and voltage dip [S
lide] settings to [ON] causes the threshold to be
expressed as a percentage of the slide reference voltage.
• If the threshold value falls outside the valid setting range, "-----" will be displayed. Pressing
th
e ENTER key resets the value to the threshold upper limit.
To Next Page
Loading...
