Section 14 Troubleshooting14.1 Checking the self supervision signals IP1474-1 v114.1.1 Checking the self supervision function IP1473-1 v114.1.1.1 Determine the cause of an internal failure M11657-2 v1This procedure describes how to navigate the menus in order to find the cause of aninternal failure when indicated by the flashing green LED on the HMI module.Procedure1. Display the general diagnostics menu.Navigate the menus to:Diagnostics/IED status/General2. Scroll the supervision values to identify the reason for the failure.Use the arrow buttons to scroll between values.14.1.2 Self supervision HMI data IP1472-1 v114.1.2.1 General IED status GUID-A84F3903-8A70-47D6-8613-AD7FF8BA3AEC v1The following table shows the general IED status signals.M11656-1 v2Table 44:Signals from the General menu in the diagnostics tree.Indicated result Possible reason Proposed actionInternal fail Off No problem detected. None.Internal fail On A failure has occurred. Check the rest of the indicated results to findthe fault.Internal warning Off No problem detected. None.Internal warning On A warning has beenissued.Check the rest of the indicated results to findthe fault.Time synch Ready No problem detected. None.Time synch Fail No time synchronization. Check the synchronization source forproblems.If the problem persists, contact your ABBrepresentative for service.Real time clock Ready No problem detected. None.Real time clock Fail The real time clock hasbeen reset.Set the clock.Table continues on next page1MRK 505 378-UEN A Section 14TroubleshootingLine differential protection RED670 2.2 IEC 283Commissioning manual
