Section 7 Establishing Connection And Verifying The Lon Communication; Communication Via The Rear Ports; Lon Communication - ABB RET650 2.1 IEC Commissioning Manual

1MRK 504 160-UEN -
Section 7
7.1
7.1.1
Transformer protection RET650 2.1 IEC
Commissioning manual
Establishing connection and verifying the LON communication
Establishing connection and verifying the

LON communication

Communication via the rear ports

LON communication
LON communication is normally used in station 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.
MicroSCADA
IED
IEC05000663 V2 EN
Figure 9: Example of LON communication structure for a station automation
system
An optical network can be used within the station 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.
Station HSI
Star coupler
RER 111
IED
Control Center
Gateway
IED
IEC05000663-1-en.vsd
Section 7
47