Schweitzer Engineering Laboratories SEL-421-4 - Page 1260

14.54
SEL-400 Series Relays Instruction Manual Date Code 20171006
ASCII Command Reference
Command Description
TAR R
The TAR R command has two functions. Use this command to reset any latched
relay targets resulting from a tripping event. Also employ the TAR R command
to reset to Row 0 the memorized target row that the relay reports when you issue
a simple TAR command.
TAR X
Use the TAR X command to view a different target row in the Relay Word bit
table than the target row in the target row repeat memory. This function is useful
for relay testing. See Testing With Relay Word Bits on page 10.7 for more infor-
mation.
You can place the X option at any position in the TAR command.
TEC
Enter the TEC (time-error calculation) command to display the present time-
error estimate and the status of the time-error control equations, and to modify
the time-error correction value.
NOTE: Not all SEL-400 series relays
support the TEC command.
Use the TEC n command to preload the time-error correction value, TECORR. If
the value n is within range, the relay will prompt you with
Are you sure (Y/
N)?
. If the prompt is acknowledged, the relay sets analog quantity TECORR = n,
and asserts Relay Word bit PLDTE for approximately 1.5 cycles. The relay then
displays the new TECORR value, along with the remaining TEC command data.
The TECORR value does not affect the TE (time-error) estimate until the
LOADTE SEL
OGIC equation asserts.
Ta b l e 1 4.1 26 TAR R C o m m a n d
Command Description Access Level
TAR R Reset latched targets and return memorized row to Row 0. 1, B, P, A, O, 2
Ta b l e 1 4.1 27 TAR X Co m m and
Command
a
a
Parameter k is the repeat count from 1–32767.
Description Access Level
TAR n X Display target Row n, but do not memorize Row n. 1, B, P, A, O, 2
TAR X n k Display target Row n and repeat for k times, but do not
memorize Row n. The repeat count k must follow the
row number.
1, B, P, A, O, 2
TAR name X Display the target row with the element name name, but
do not memorize the row number.
1, B, P, A, O, 2
TAR name X k Display the target row with the element name name and
repeat for k times, but do not memorize the row number.
The repeat count k can be at any position in the com-
mand after TAR.
1, B, P, A, O, 2
Ta b l e 1 4.1 28 T EC Comm a n d
Command Description Access Level
TEC Display time-error data. 1, B, P, A, O, 2
TEC n Preload time-error correction value n,
where –30.000 <= n <= 30.000.
B, P, A, O, 2