Connection Diagram; Ref542Plus With Mechanical Binary I/O - ABB REF542plus Installation And Commissioning Manual

11.1 REF542plus with mechanical binary I/O

1VTA100004-en
REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning

11 Connection Diagram

Example of REF542plus base version with one mechanical binary I/O version 3.
Extension up to two additional mechanical binary I/O version 3 possible. Other
configurations of the analog input board available, e.g mixed configuration for
transformer and sensor connection.
DMS,2001-10-04 REF542 plus : Installation and Commissioning 73 / 80