Signals - ABB RELION Series Technical Manual

1MRS758755 A
9.5.6
REC615 and RER615
Technical Manual
Load fault detections on busbar, such as overcurrent and earth-fault functions are
connected as grouped protection input to BLOCK. Auto mode OFF/ON is connected to
input BLOCK.
GUID-B9F3739B-FBA6-4F2D-AD69-02B026229C77 V1 EN
Figure 355: Signal scheme illustrating an automatic transfer switch and an
automatic reconnection operation caused by a temporary under-
voltage on the preferred bus 1 (all other excluded inputs are "FALSE"
during the sequence)

Signals

Table 676: ATSABTC Input signals
Name Type
BLOCK BOOLEAN
UN_U_BUS1 BOOLEAN
UN_U_BUS2 BOOLEAN
CB1_POSOPEN BOOLEAN
CB1_POSCLOSE BOOLEAN
CB2_POSOPEN BOOLEAN
CB2_POSCLOSE BOOLEAN
Default Description
0=False Blocking of function
0=False Under-voltage on bus 1
0=False Under-voltage on bus 2
0=False Circuit breaker open status for bus 1
0=False Circuit breaker close status for bus 1
0=False Circuit breaker open status for bus 2
0=False Circuit breaker close status for bus 2
Section 9
Control functions
671