ABB RELION SMU615 Technical Manual page 232

Control functions
Figure 133: Condition for enabling the close request (CL_REQ) for CBXCBR
When the open command is given from communication, by activating the AU_OPEN
input, it is processed only if OPEN_ENAD is TRUE. OP_REQ output is also available.
Figure 134: Condition for enabling the open request (OP_REQ) for CBXCBR
OPEN and CLOSE outputs
The EXE_OP output is activated when the open command is given (AU_OPEN, via
communication) and OPEN_ENAD signal is TRUE. In addition, the protection trip
commands can be routed through the CBXCBR function by using the TRIP input.
When the TRIP input is TRUE, the EXE_OP output is activated immediately and
bypassing all enabling or blocking conditions.
The EXE_CL output is activated when the close command is given (AU_CLOSE, via
communication) and CLOSE_ENAD signal is TRUE. When the TRIP input is "TRUE", CB
closing is not allowed.
232
ENA_CLOSE
AU_CLOSE
Communication
SYNC_OK
SYNC_ITL_BYP
POSCLOSE
TRIP
Operation timeout elapses
ENA_OPEN
AU_OPEN
Communication
POSCLOSE
Operation timeout elapses
AND
SET
OR
RESET
OR
AND
OR
OR
1MRS758407 C
SR CL_REQ
SET
SR OP_REQ
RESET
Technical Manual
SMU615