Schweitzer Engineering Laboratories SEL-751 - Table

7.27
Date Code 20170927 Instruction Manual SEL-751 Relay
Communications
Communications Protocols
CLOSE Command (Close Breaker)
The CLO (CLOSE) command asserts Relay Word bit CC for 1/4 cycle when
it is executed. Relay Word bit CC can then be programmed into the CL
SEL
OGIC control equation to assert the CLOSE Relay Word bit, which in turn
asserts an output contact (e.g., OUT102 = CLOSE) to close a circuit breaker
(see Table 4.69 and Figure 4.80 for factory-default setting CL and close
logic).
To issue the CLO command, enter the following.
Typing N <Enter> after the previous prompt aborts the command.
The main board breaker jumper (see Tabl e 2.17) supervises the CLO
command. If the breaker jumper is not in place (breaker jumper = OFF), the
relay does not execute the CLO command and responds with the following.
When setting EN_LRC := Y (see Table 9.4), the Relay Word bit LOCAL
supervises the CLO command. If the LOCAL bit is asserted (LOCAL = 1),
the relay does not execute the CLO command and responds with the
following:
The Relay Word bit LOCAL is determined by the LOCAL SEL
OGIC control
equation (see Table 9.4).
COMMUNICATIONS Command
The COM x command (see Table 7.10) displays communications statistics for
the M
IRRORED BITS communications channels. For more information on
M
IRRORED BITS communications, see Appendix J: MIRRORED BITS
Communications. The summary report includes information on the status of
Relay Word bits ROKA and ROKB that indicates if received data are valid.
621.0,621.0,621.0,128.3,115.5,128.3,121.9,121.9,128.3,24.9,50.5,51.3,51.3,51.3,57.8,51.3,57.8,57.8,0,0,0,0,0,0,0,0,0,0,0,0,0
,0,0, ,"038000000000","1B73"
621.0,621.0,621.0,115.5,121.9,134.8,121.9,121.9,128.3,24.9,50.5,51.3,44.9,64.2,51.3,51.3,57.8,57.8,0,0,0,0,0,0,0,0,0,0,0,0,0
,0,0, ,"038000000000","1B74"
621.0,621.0,621.0,121.9,115.5,147.6,121.9,121.9,128.3,24.9,50.5,51.3,51.3,57.8,64.2,51.3,57.8,57.8,0,0,0,0,0,0,0,0,0,0,0,0,0
,0,0, ,"038000000000","1B79"
621.0,621.0,621.0,134.8,128.3,121.9,121.9,121.9,128.3,24.9,50.5,51.3,44.9,70.6,44.9,51.3,57.8,57.8,0,0,0,0,0,0,0,0,0,0,0,0,0
,0,0, ,"038000000000","1B7F"
=>>
Figure 7.20 CEV HIF Command Response (Continued)
=>>CLO <Enter>
Close Breaker (Y,N)? Y <Enter>
=>>
=>>CLO <Enter>
Command Aborted: No Breaker Jumper
=>>
=>>CLO <Enter>
Command Aborted: Device in Local Control
=>>