GE Industrial Solutions Entellisys System User Manual - Manual (Page 120)

Sequence of events, fault reports, and waveform capture records 120
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9.2 Viewing the SOE
The default SOE view displays events of the default CPU in the order in which they were logged.
In this mode, it is possible for events to be slightly out of chronological order due to the relative
locations of devices within the system that may be generating them. To sort the events in
another order, click on the heading of any column to sort them accordingly. Navigation buttons
are provided on the screen to move between pages of events. The screen is not refreshed
automatically so as not to interrupt navigation through the list. Instead, a refresh button is
provided at the top of the screen to update the list at the user's discretion.
If a protection or circuit breaker operation event occurs, a Fault Report and Waveform Capture
associated with the event are available. To view either of these, highlight the event and click
either the View Fault Data or Waveform button located at the top of the screen.
The fault report consists of a table of all circuit breakers in the system. For each circuit breaker,
the report shows the RMS current recorded by the circuit breaker's Messenger over the course
of the half cycle just prior to the occurrence of the event.
9.3 Waveform capture configuration
Use the Waveform Capture configuration utility (from the User Settings menu, click Metering &
Waveforms) to set the following parameters:
• Trigger Mode – In the default Automatic Overwrite mode, waveforms are overwritten in the
CPU memory on a FIFO basis. In Protected mode, waveforms stop being captured once the
waveform buffer capacity has been reached, as discussed below. It is necessary to manually
clear the waveforms from memory using the Clear Waveforms button on this screen to
resume capture in this mode.
• Pre-Trigger Setting – Selects the amount of pre-trigger information contained in each
waveform, from 0 to 119 half-cycles worth of data.
• Force Trigger – Forces a waveform capture to occur. It is necessary to press the Refresh
button to update the information on the screen to reflect the new capture.