Establishing Connection And Verifying The Lon Communication; Communication Via The Rear Ports; Lon Communication - Hitachi Relion RES670 Commissioning Manual

1MRK 511 409-UUS Rev. K
Section 7
7.1

Communication via the rear ports

7.1.1

LON communication

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.
IED
IEC05000663 V2 EN-US
Figure 8:
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.
Phasor measurement unit RES670
Commissioning manual
Establishing connection and verifying
the LON communication
Station HSI
MicroSCADA
Star coupler
RER 111
IED
Example of LON communication structure for a substation automation system
© 2017 - 2022 Hitachi Energy. All rights reserved

Establishing connection and verifying the LON communication

Control Center
Gateway
IED
IEC05000663-1-en.vsd
Section 7
M12196-2 v1
M12196-4 v6
M14804-3 v6
47