Checking The Communication Link Operation; Checking The Time Synchronization; Running The Display Test; Diagnosing The Ied Status Via The Lhmi Hint Menu - Hitachi Relion 670 Series Operation Manual

Section 9
Troubleshooting
9.1.4.1

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.
1.2. Check the communication status of the front port via the LHMI in Main menu/Diagnostics/
2. Check the communication status of the rear ports via the LHMI in Main menu/Diagnostics /
Communication/Ethernet status /Access points
The communication ports on the rear side of the IED are for optical Ethernet via ST connectors.
•
9.1.4.2

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.
9.1.5

Running the display test

You can run the display test in either of the following ways:
• Select Main menu /Test /LED test .
•
Press simultaneously
All the LEDs are tested by turning them on simultaneously. The display shows a set of patterns so
that all the pixels are activated. After the test, the display returns to normal state.
9.1.6

Diagnosing the IED status via the LHMI hint menu

In order to help the user, there is an LHMI page labeled 'Hints'. This page is located under Main menu/
Diagnostics/IED status/Hints. For each activated hint there is a headline. From the headline view, an
explanation page can be entered, giving the user more information and hints about the particular topic.
For example, if there is a configuration to use IEC 61850 9–2 analog data, but no data arrives on the
access point, then the IED will use substituted data and most protection functions will be blocked. This
condition will be indicated with a sub-menu under Hints, where details about this condition are shown.
The Hint menu is a way to assist the user in troubleshooting.
82
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.
Communication /Ethernet status/Front port /FRONTSTATUS:1.
Check that the LinkStatus value is 1, that is, the communication is working. When the value is
0, there is no communication link.
Check that the LinkStatus value is 1, that is, the communication is working. When the value is
0, there is no communication link.
Note that the time synchronization source has to be activated. Otherwise the value is always
Normal .
and
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