• Check the IEC61850 and DNP3 communication status in internal event list in Main
menu/Diagnostics/IED Status/General.
• In case of persistent faults originating from IED's internal faults such as component
breakdown, contact ABB for repair or replacement actions.
8.1.3.1 Checking the communication link operation
There are several different communication links on the product. First check that all
communication ports that are used for communication are turned on.
1. Check the front communication port RJ-45.
1.1. Check that the uplink LED is lit with a steady green light.
The uplink LED is located on the LHMI above the RJ-45 communication port
on the left. The port is used for direct electrical communication to a PC
connected via a crossed-over Ethernet cable.
1.2. Check the communication status of the front port via the LHMI in Main
menu/Test/Function status/Communication/DOSFRNT:1/Outputs.
Check that the LINKUP value is 1, that is, the communication is working.
When the value is 0, there is no communication link.
2. Check the communication status of the rear port X1 via the LHMI in Main menu/
Tests/Function status/Communication/DOSLAN1:1/Outputs.
The X1 communication port on the rear side of the IED is for optical Ethernet via LC
connector.
• Check that the LINKUP value is 1, that is, the communication is working.
When the value is 0, there is no communication link.
8.1.3.2 Checking the time synchronization
• Select Main menu/Diagnostics/IED status/General and check the status of the time
synchronization on Time Synch.
The Time synch value is Normal when the synchronization is in order.
Note that the time synchronization source has to be activated.
Otherwise the value is always Normal.
8.1.4 Running the display test
To run the display test, either use the push buttons or start the test via the menu.
Section 8 1MRK 505 293-UUS A
Troubleshooting
126
Commissioning manual
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