Development and production of systems for measurement and control
5.5. Scope
PLA44 shows scope of measured signal for voltage and current in all four phases. It is possible to select displayed
phase or phases by pressing the button
SET
and selecting the appropriate phase or phases. Escaping back from the
phase selection is by pressing the button
ESC
.
In order to show or hide curve of the phase or phases on graph press button
SET
and select the phase or phases.
5.6. Events
PLA44 captures and records voltage and current events as well as voltage transients. Detail information and signal
waveform are displayed on the device screen and also web-server (if enabled).
5.6.1. List of events
Last 50 events of each type are captured in the nonvolatile memory with information about the start and end of the
event and graph of the event. On the device screen the event graph can be displayed with all detail information.
There are following type of events recorded in the PLA44 memory.
Type of event
Description
Interruption
Voltage interruption
DIP
Under voltage
SWELL
Over voltage
RVC
Rapid voltage changes
IMAX
Over current
On the screen of Events list it is possible filter events according to their type. Press button
Fn
(
Zoom
) to apply
appropriate filter on list of events.
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