Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

Page: 468 / 824

7.24
SEL-700G Relay Instruction Manual Date Code 20170814
Communications
SEL ASCII Protocol and Commands
CLOSE n Command (Close Breaker n)
The CLO n (CLOSE n) command asserts Relay Word bit CC n for 1/4 cycle
when it is executed. Relay Word bit CCn can then be programmed into the
CL n SEL
OGIC
control equation to assert the CLOSE n Relay Word bit, which
in turn asserts an output contact (for example, OUTxxx = CLOSE n) to close a
circuit breaker n (see Table 4.54 and Figure 4.130 through Figure 4.132 for
factory-default setting CL n and close logic). Select n = X or n = Y for
Breaker X or Breaker Y data, respectively.
To issue the CLO X command, enter the following.
Typing N <Enter> after the previous prompt aborts the command.
The CLO n command is supervised by the main board Breaker jumper (see
Table 2.15). If the Breaker jumper is not in place (Breaker jumper = OFF), the
relay does not execute the CLO n command and responds with the following.
COMMUNICATIONS Command
The COM x command (see Table 7.10) displays communications statistics for
the M
IRRORED
B
ITS
communications channels. For more information on
M
IRRORED
B
ITS
communications, see Appendix I: M
IRRORED
B
ITS
Communications.
The summary report includes information on the failure of ROKA or ROKB.
The
Last Failure
field displays the reason for the most recent channel error,
even if the channel was already failed. We define failure reasons as one of the
following error types:
➤
Device disabled
➤
Framing error
➤
Parity error
➤
Overrun
➤
Re-sync
➤
Data error
➤
Loopback
➤
Underrun
=>> CLO X <Enter>
Close Breaker X(Y,N)? Y <Enter>
=>>
=>> CLO X <Enter>
Command Aborted: No BRKR Jumper
=>>