ABB REF615 Applications Manual page 73

1MRS756378 D
REF615
Application Manual
A071360 V3 EN
Figure 31: Circuit breaker control
The ENA_CLOSE input, that is, enable the closing of the circuit breaker, in the
breaker control function block CBXCBR is a combination of the status of the Master
Trip. The open operation is always enabled.
If the ENA_CLOSE signal is completely removed from the breaker
control function block CBXCBR with SMT, the function assumes
that the breaker close commands are allowed continuously.
A071362 V3 EN
Figure 32: Alarm indication
The signal outputs from the IED have been connected to give dedicated information
on:
• start of any protection function SO1 (X100:10-12)
• operation (trip) of any protection function SO2 (X100:13-14).
Section 3
REF615 variants
67