ABB REL 551-C1*2.5 - Remote End Data Communication; Application; Setting Parameters; Fibre Optical Module

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Remote end data communication Chapter 9
Data communication
1 Remote end data communication
1.1 Application
The remote terminal communication modules can be used either for differential line protection
applications or for binary signal transfer of up to 32 signals in both directions between, for ex-
ample, distance protections. The following hardware modules are available:
• V35/36 contra-directional and co-directional
•X.21
• RS530/422 contra-directional and co-directional
•G.703
• Short-range galvanic module
• Fibre optical communication module
• Short-range fibre optical module
1.2 Setting parameters
Path in local HMI-tree: Configuration/TerminalCom/RemTermCom
Table 121: Setting parameters for remote terminal communication
1.3 Fibre optical module
1.3.1 Application
The fibre optical communication module DCM-FOM can be used both with multi-mode and sin-
gle-mode fibres.The communication distance can typically be 40-60 km for single mode fibre
and typically 15-20 km for multi-mode fibre, and even further with high quality fibre. This in-
terface can also be used for direct connection with communication equipment of type FOX
512/515 from ABB.
Parameter Range Default Unit Description
TerminalNo 0-255
Step: 1
0 - Select number for this terminal
RemoteTermNo 0-255
Step: 1
0 - Select number for remote terminal
CommSync Master, Slave Master - Select Master or Slave for communica-
tion synchronisation
BitRate 56 kb/s,
64kb/s
56 kb/s Select bitrate for Codir communication
OptoPower Low, High Low - Select High or Low opto power
Format 2.0, 2.2/2.3 2.2/2.3 - Line differential telegram format