ABB RELION REX640 Technical Manual page 1361

1MRS759142 C
REX640
Technical Manual
GUID-97160556-2161-43F8-BA3E-F154663D9753 V1 EN
Figure 722: Condition for enabling the close request (CL_REQ) for CBXCBR
When the open command is given from communication, via LHMI or activating the
AU_OPEN input, it is processed only if OPEN_ENAD is TRUE. OP_REQ output is also
available.
GUID-1C6BE671-532C-43B2-A8C2-40472003888E V1 EN
Figure 723: 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 or from LHMI) 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 or from LHMI) and CLOSE_ENAD signal is TRUE. When the TRIP
input is "TRUE", CB closing is not allowed.
Section 9
Control functions
1355