ABB RELION REX640 Technical Manual page 100

Basic functions
More details about the active internal fault are found on the Relay Status page.
On the LHMI, the internal fault state is indicated with a red LED. More information
about the fault and recovery options can be accessed by tapping More Information.
Figure 26: Internal fault state indicated with red LED
More Information shows all active faults and the corresponding fault codes. In
addition, a recovery procedure is described.
Figure 27: More information about the fault
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REX640
Technical Manual