local communication module, LDCM. The parameter shall be set to 2 when
transmitting analog data from the local transformer module, TRM. When a merging
unit according to IEC 61850-9-2 is used instead of the TRM this parameter shall be set
to 5.
RemAinLatency: Remote analog latency; This parameter corresponds to the
LocAinLatency set in the remote IED.
MaxTransmDelay: Data for maximum 40 ms transmission delay can be buffered up.
Delay times in the range of some ms are common. It shall be noticed that if data arrive
in the wrong order, the oldest data will just be disregarded.
CompRange: The set value is the current peak value over which truncation will be
made. To set this value, knowledge of the fault current levels should be known. The
setting is not overly critical as it considers very high current values for which correct
operation normally still can be achieved.
MaxtDiffLevel: Allowed maximum time difference between the internal clocks in
respective line end.
5.1.3 Setting parameters
Table 263: LDCMRecBinStat1 Non group settings (basic)
Name
Values (Range) Unit Step Default Description
ChannelMode Disabled
Enabled
OutOfService
- - Enabled Channel mode of LDCM, 0=OFF, 1=ON,
2=OutOfService
TerminalNo 0 - 255 - 1 0 Terminal number used for line differential
communication
RemoteTermNo 0 - 255 - 1 0 Terminal number on remote terminal
CommSync Slave
Master
- - Slave Com Synchronization mode of LDCM,
0=Slave, 1=Master
OptoPower LowPower
HighPower
- - LowPower Transmission power for LDCM, 0=Low, 1=High
ComFailAlrmDel 5 - 500 ms 5 100 Time delay before communication error signal
is activated
ComFailResDel 5 - 500 ms 5 100 Reset delay before communication error
signal is reset
InvertPolX21 Disabled
Enabled
- - Disabled Invert polarization for X21 communication
1MRK504116-UUS C Section 5
Remote communication
849
Application manual
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