Schweitzer Engineering Laboratories SEL-421-4 - Page 1093

9.29
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Reporting
Sequential Events Recorder (SER)
overflow, diagnostic restarts, and SER autoremoval/reinsertion. The relay stores
the latest 1000 SER entries to nonvolatile memory. Figure 9.14 is a sample SER
report.
The SER report contains the following:
➤ Standard report header
➢ Relay and terminal identification
➢ Date and time of report
➤ SER number
➤ SER date and time
➤ Relay element or condition
➤ Element state
In the SER report, the oldest information has the highest number. The newest
information is always #1. When using a terminal you can order the positions of
the SER records in the SER report.
Viewing the SER Report
The relay displays the SER records in ASCII and binary formats.
Access the SER report from the communications ports and communications
cards in Access Level 1 and higher. You can independently clear/reset already
viewed SER data at each communications port (with the SER CV or SER RV
command) so that users at other ports (SCADA, Engineering, for example) can
retrieve complete SER reports. The SER CV or SER RV command will not clear
any SER data that has been recorded, but not viewed, on a particular serial port.
To clear all SER data on a serial port, use the SER C or SER R command.
To clear all SER data from all serial ports, use the SER CA or SER RA com-
mand, available only from Access Levels P, A, O, and 2. This procedure would
normally be used after relay commissioning or testing.
Use an ASCII terminal or QuickSet to examine SER records. You can use the
SER command to view the SER report by date, date range, SER number, or SER
number range. The relay labels each new SER record with a unique number.
Figure 9.14 Sample SER Report
Relay 1 Date: 03/16/2001 Time: 13:09:29.341
Station A Serial Number: 2001001234
FID=SEL-411L-R101-V0-Z001001-D20010315
# DATE TIME ELEMENT STATE
6 03/15/2001 00:00:00.004 Power-up Group 1
5 03/15/2001 00:00:00.022 Relay Enabled
4 03/15/2001 00:30:00.021 GROUND O/C 1 LINE 1 51S1 PICKED UP
3 03/15/2001 00:30:03.221 GROUND O/C 1 LINE 1 51S1 TIMEOUT
2 03/15/2001 00:32:00.114 GROUND O/C 1 LINE 1 51S1 RESET
1 03/15/2001 00:32:00.114 GROUND O/C 1 LINE 1 51S1 DROPOUT
#
6
5
4
3
2
1
ELEMENT
Power-up
Re
l
ay
GROUND O
/
C 1 LINE 1
G
R
O
UND
O/C
1 LINE 1
GROUND O/C 1 LINE 1
GROUND O/C 1 LINE 1
SER
Number
Relay Element
or Condition