10.31
Date Code 20080213 Instruction Manual SEL-351A Relay
Serial Port Communications and Commands
Command Explanations
Command TAR SH1 10 is executed in the following example:
=>TAR SH1 10 <Enter>
79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
=>
Note that the Relay Word row containing the SH1 bit is repeated 10 times. In
this example, the reclosing relay is in the Lockout State (79LO = logical 1),
and the shot is at shot = 2 (SH2 = logical 1). Command TAR 35 will report the
same data since the SH1 bit is in Row 35 of the Relay Word.
Command TAR ROW LIST is executed in the following example
(SEL-351A with 0.2 A nominal neutral channel):
TAR LIST or TAR ROW LIST Shows all the Relay Word bits in all of the rows.
Adding ROW to the command displays the Relay
Word Row number at the start of each line.
TAR R Clears front-panel tripping target LEDs TRIP, INST,
COMM, SOTF, 50, 51, 81, A, B, C, G, and N. Unlatches
the trip logic for testing purposes (see Figure 5.1).
Shows Relay Word Row 0.
Table 10.7 SEL-351A Word and Its Correspondence to TAR Command
TAR 0
(Front-Panel LEDs)
EN TRIP INST COMM SOTF 50 51 81
TAR 1
(Front-Panel LEDs)
ABCGNRSCYLO
TAR Command Description
NOTE: The TAR R command cannot
reset the latched Targets if a TRIP
condition is present.
Courtesy of NationalSwitchgear.com
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