Outputs For Signalling; Irf - ABB RELION SMU615 Applications Manual

1MRS758580 C
4.2.2

Outputs for signalling

SO output contacts can be used for signalling on start and tripping of the merging
unit. On delivery from the factory, the start and alarm signals from all the protection
stages are routed to signalling outputs.
Table 35: Output contacts X100:10-14
Terminal
X100:10
X100:11
X100:12
X100:13
X100:14
Output contacts of slot X110 are available with application configuration B.
Table 36: Optional high-speed output contacts X110:15-24 with BIO0007
Terminal
X110:15
X110:16
X110:19
X110:20
X110:23
X110:24
4.2.3

IRF

The IRF contact functions as an output contact for the self-supervision system of
the merging unit. Under normal operating conditions, the merging unit is energized
and the contact is closed (X100:3-5). When a fault is detected by the self-supervision
system or the auxiliary voltage is disconnected, the contact X100:3-5 drops off and
the contact X100:3-4 closes.
Table 37: IRF contact
Terminal
X100:3
X100:4
X100:5
SMU615
Application Manual
Merging unit's physical connections
Description
SO1, common
SO1, NC
SO1, NO
SO2, NO
SO2, NO
Description
HSO1, NO
HSO1, NO
HSO2, NO
HSO2, NO
HSO3, NO
HSO3, NO
Description
IRF, common
Closed; IRF, or U disconnected
aux
Closed; no IRF, and U
aux
connected
73