Schweitzer Engineering Laboratories SEL-251 - Access Level 2 Commands; Close; COPY M N

Date Code 970103 Communications 3-19
SEL-251, -2, -3 Instruction Manual
Access Level 2 Commands
While all commands are available from Access Level 2, the commands below are available only
from Access Level 2. Remember, the relay pulses the ALARM contacts closed for one
second after any Level 2 access attempt.
CLOSE
The CLOSE command asserts the CLOSE output relay when jumper JMP104 is installed on the
main board, the circuit breaker status input (52A, !52A, 52AR, or !52AR) indicates an open
circuit breaker, and the TRIP outputs are not asserted. The CLOSE output relay then remains
closed until the circuit breaker status input indicates that the circuit breaker has closed or until
the close failure timer (CFT) expires.
To close the circuit breaker with this command, type CLOSE <ENTER>. The relay responds
with the message: "Close BREAKER (Y/N) ?" Y <ENTER> yields a second prompting string:
"Are you sure (Y/N) ?" Type Y <ENTER> to assert the CLOSE output relay if the TRIP output
and 52A input are not asserted. The relay transmits the message "Breaker CLOSED" when the
breaker closes or if it is already closed (as determined by 52A input state). Typing N <ENTER>
after either of the above messages aborts the closing operation with the message "Aborted."
=>>CLOSE <ENTER>CLOSE <ENTER>
Close BREAKER (Y/N) ? Y <ENTER>
Are you sure (Y/N) ? Y <ENTER>
Breaker CLOSED
=>>
After CLOSE command execution, if the response is "Breaker OPEN" instead of "Breaker
CLOSED," the circuit breaker status input (52A, !52A, 52AR, or !52AR) did not indicate circuit
breaker closure.
COPY m n
COPY m n copies settings and logic from setting group m to group n (m and n equal any
combination of 1, 2, 3, 4, 5, or 6).
Usually, there are only a few setting or logic differences between groups. If you enter one setting
group with the SET command, you can copy it to other groups with the COPY command. Use
SET to modify copied setting groups.
COPY command execution clears the event report buffer. If n is the active setting group, the
ALARM output contact closes momentarily.
=>>COPY 4 6COPY 4 6
Are you sure (Y/N) ? Y <ENTER>Y <ENTER>
Please wait...
Settings copied
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