ABB RELION Series Technical Manual page 649

1MRS758755 A
REC615 and RER615
Technical Manual
• The SYNC input must be TRUE if the particular CBB requires information about
the synchronism
• All AR initiation inputs that are defined protection lines (using the Control line
setting) are inactive
• The circuit breaker is open
• The circuit breaker is ready for the close command, that is, the CB_READY input
is TRUE. This is indicated by active READY output.
If at least one of the conditions is not fulfilled within the time set with the Auto wait
time parameter, the autoreclose sequence is locked.
The synchronism requirement for the CBBs can be defined with the Synchronisation
set setting, which is a bit mask. The lowest bit in the Synchronisation set setting is
related to CBB1 and the highest bit to CBB7. For example, if the setting is set to "1",
only CBB1 requires synchronism. If the setting is it set to "7", CBB1, CBB2 and
CBB3 require the SYNC input to be TRUE before the reclosing command can be
given.
A070873 V1 EN
Figure 336: Initiation during discrimination time - AR function goes to lockout
The discrimination time starts when the close command CLOSE_CB has been given.
If a start input is activated before the discrimination time has elapsed, the AR function
goes to lockout. The default value for each discrimination time is zero. The
discrimination time can be adjusted with the Dsr time shot 1...4 parameter.
Section 9
Control functions
643