ABB Relion 670 series - Establishing Connection and Verifying the LON Communication; Section 7 Establishing Connection and Verifying the LON Communication; Communication Via the Rear Ports; LON Communication

Section 7 Establishing connection and verifying
the LON communication
7.1 Communication via the rear ports
M12196-2 v1
7.1.1 LON communication
M12196-4 v6
LON communication is normally used in substation automation systems. Optical fiber is used within the
substation as the physical communication link.
The test can only be carried out when the whole communication system is installed. Thus, the test is a
system test and is not dealt with here.
M14804-3 v6
Control Center
IED IEDIED
Gateway
Star coupler
RER 111
Station HSI
MicroSCADA
IEC05000663-1-en.vsd
IEC05000663 V2 EN-US
Figure 8: Example of LON communication structure for a substation automation system
An optical network can be used within the substation automation system. This enables communication
with the IEDs through the LON bus from the operator’s workplace, from the control center and also from
other IEDs via bay-to-bay horizontal communication. For LON communication an SLM card should be
ordered for the IEDs.
The fiber optic LON bus is implemented using either glass core or plastic core fiber optic cables.
1MRK 504 165-UUS Rev. J Section 7
Establishing connection and verifying the LON communication
Transformer protection RET670 61
Commissioning manual
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