ABB Relion 620 Series - Page 1031

Figure 549: Logic diagram of auto-initiation sequence detection
Automatic initiation can be selected with the Auto initiation Cnd setting to be the
following:
• Not allowed: no automatic initiation is allowed
• When the synchronization fails, the automatic initiation is carried out when the
auto wait time elapses and the reclosing is prevented due to a failure during the
synchronism check
• When the circuit breaker does not close, the automatic initiation is carried out
if the circuit breaker does not close within the wait close time after issuing the
reclose command
• Both: the automatic initiation is allowed when synchronization fails or the circuit
breaker does not close.
The
Auto init parameter defines which INIT_X lines are activated in the
auto-initiation. The default value for this parameter is "0", which means
that no auto-initiation is selected.
1MRS757644 H Control functions
620 series
Technical Manual
1031