R.9.25
Date Code 20111215 Reference Manual SEL-421 Relay
ASCII Command Reference
Description of Commands
If the device supports IEC 61850 ICD or CID files and the IEC 61850 protocol
is enabled, the ID command will display the following additional information.
➤ iedName: the IED name (e.g., SEL-421_OtterTail)
➤ type: the IED type (e.g., SEL-421)
➤ configVersion: the CID file configuration version (e.g., ICD-
421-R100-V0-Z001001-20060512
The optional Ethernet card provides support for IEC 61850 in the SEL-421.
You must first use the POR 5 command to establish a transparent session to
the Ethernet card, then issue the ID command to view the IEC 61850 ID data.
A sample ID command response from the optional Ethernet card (with
IEC 61850 enabled) is shown in Figure 9.2.
"FID=SEL-2702-R100-V2-Z000000-D20060524","08DA"
"BFID=SLBT-2701-R102-V0-Z000000-D20051107","095B"
"CID=9689h","02C5"
"DEVID=ETHERNET PROCESSOR WITH IEC 61850 AND DNP","0CBE"
"PARTNO=2702C4P","0413"
"CONFIG=000000","0383"
"iedName=SEL_421_OtterTail","05BC"
"type=SEL_421","04A4"
"configVersion=ICD-421-R117-V0-Z001001-D20060524","0698"
Figure 9.2 Sample ID Command Response from Ethernet Card
IRIG
The IRIG command directs the relay to use the next available demodulated
IRIG-B time code to update the relay internal clock. For information on the
IRIG time mode, see IRIG-B on page U.4.71.
The IRIG command was originally provided in the SEL-421 as a testing aid.
The IRIG command was used to update the relay internal clock with the
IRIG-B time value without waiting for the 30-second confirmation time delay.
There is no longer a 30-second confirmation time delay—the relay uses the
IRIG time source as soon as it determines that the signal is valid, a process
that may take several seconds. Once the IRIG signal is verified, the relay clock
is updated once per second. The IRIG command is still available, but is no
longer necessary. To check IRIG status, use the TIME Q command instead—
see TIME Q Descriptions on page U.4.75.
If the relay has no valid IRIG-B time code at the rear panel, or if the TIME Q
command reports a relay time source other than IRIG or HIRIG, the relay
responds to the IRIG command with the following error message,
IRIG-B
DATA ERROR
. See the TIME command for more information.
LOOPBACK
Use the LOOPBACK command to instruct the relay to receive the transmitted
M
IRRORED BITS communications data on the same serial port. See SEL
M
IRRORED BITS Communications on page R.5.15 for more information on
M
IRRORED BITS communications.
Tabl e 9. 67 IRI G Comma nd
Command Description Access Level
IRIG Lock the relay internal clock to the IRIG-B
time code input.
1, B, P, A, O, 2
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