Primary Objects Incorrect Visualization - ABB REF 542plus Operator's Manual

1MRS755869
16.3.
Multifunction Protection and Switchgear Control Unit
Operator's manual

Primary objects incorrect visualization

The primary object status is usually acquired by REF 542plus with 2 distinct
contacts, one that is closed when the object is closed and another one that is opened
when the object is opened.
The primary object is visualized in open position with a dotted line when both
contacts are opened (REF 542plus has no voltage at both contact inputs).
Fig. 16.3.-1 REF 542plus has no voltage at both inputs indicating the primary object
position
The primary object is visualized both in open and close positions when both
contacts are closed (REF 542plus has voltage at both its contact inputs).
Fig. 16.3.-2 REF 542plus has voltage at both inputs indicating the primary object
position
Solution:
Check the wiring of the primary object. Verify that REF 542plus connectors are
properly inserted and tightened.
REF 542plus REF 542plus
A051444
A051445
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