6-28
Reporting and Alarm Functions
BE1-951
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General protection settings.
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Fault reporting settings.
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Breaker Monitoring setttings.
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Alarm settings.
Files can be requested in ASCII or binary format but both file transfers use the same format. Binary file
transfer is much faster and consumes less disk space. ASCII format data is human readable and can be
analyzed by standard text editing software. Bestwave software for IBM compatible computers is available
from Basler Electric to convert binary files to ASCII format.
Configuration and data files can be downloaded using any standard communications program. The
download protocol may be XMODEM or XMODEM CRC format. For ease of reference, use the command
name for the name of the downloaded file.
RO Command Examples
1.
Initiate transfer of a configuration report for the end of fault number 123.
>RO-123B2.CFG (for binary format) or RO-123A2.CFG (for ASCII format)
2.
Initiate transfer of a data report for the end of fault number 123.
>RO-123B2.DAT (for binary format) or RO-123A2.DAT (for ASCII format)
SEQUENCE OF EVENTS RECORDER
A sequence of events recorder (SER) report is very useful in reconstructing the exact sequence and timing
of events during a power disturbance or even normal system operations. The SER tracks over 100 data
points by monitoring the internal and external status of the relay. Data points are scanned every quarter-
cycle. All changes of state that occur during each scan are time tagged to 1 millisecond resolution. A total
of 255 changes are stored in volatile memory; when the SER memory becomes full, the oldest record is
replaced by the latest one acquired.
The SER monitors the following points and conditions.
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Single-state events such as resetting demands or targets, changing settings, etc.
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Programmable logic variables
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Targets
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Relay trouble alarm variables
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Programmable alarm variables
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Output contact status
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Fault reporting trigger expressions
When a monitored event occurs or a monitored variable changes state, the SER logs the time and date of
the event, the event or variable name, and the state that the variable changed to. For user programmable
logic variables (contact sensing inputs, virtual switches, and virtual outputs), the user-programmed variable
name and state names are logged in the SER report instead of the generic variable name and state names.
For more information, refer to
Section 3, Input and Output Functions.
Retrieving SER Information
SER information is retrieved through SER Directory Reports, the New Events Counter, and by obtaining
specific SER Reports.
SER Directory Report. A directory report lists the number of events currently in memory and the time span
that the events cover. Directory reports are accessed using the RS (report SER) command.
New Events Counter. The new events counter tracks how many new entries have been logged to the SER
since the new events counter was reset to zero. After SER information is checked, the new events counter
can be reset. Then, the next time that the relay is checked, it’s easy to determine if there are new events that
haven’t been evaluated. One line of an SER directory report contains the new events counter information.
The new events counter is reset by obtaining write access to Reports and using the RS=0 command. The
new events counter can be viewed but not reset at HMI screen 4.2.
