ABB RELION 611 Series Technical Manual page 403

1MRS757454 D
611 series
Technical Manual
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Figure 185: Enabling and blocking logic for CLOSE_ENAD and OPEN_ENAD
signals
Opening and closing operations
The opening and closing operations are available via communication, binary inputs or
LHMI commands. As a prerequisite for control commands, there are enabling and
blocking functionalities for both opening and closing commands (CLOSE_ENAD and
OPEN_ENAD signals). If the control command is executed against the blocking or if
the enabling of the corresponding command is not valid, CBXCBR generates an error
message.
When close command is given from communication, via LHMI or activating the
AU_CLOSE input, it is carried out (the EXE_CL output) only if CLOSE_ENAD is
TRUE.
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Figure 186: 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.
Section 8
Control functions
397