Section 19 Remote communication19.1 Binary signal transfer IP12423-1 v219.1.1 IdentificationM14849-1 v3Function description IEC 61850 identification IEC 60617identificationANSI/IEEE C37.2device numberBinary signal transfer,receiveBinSignRec1_1BinSignRec1_2BinSignReceive2- -Binary signal transfer,transmitBinSignTrans1_1BinSignTrans1_2BinSignTransm2- -19.1.2 Application IP16245-1 v1M12844-3 v4The IEDs can be equipped with communication devices for line differentialcommunication (not applicable for RER670) and/or communication of binarysignals between IEDs. The same communication hardware is used for bothpurposes.Communication between two IEDs geographically on different locations is afundamental part of the line differential function.Sending of binary signals between two IEDs is used in teleprotection schemes andfor direct transfer trips. In addition to this, there are application possibilities, forexample, blocking/enabling functionality in the remote substation, changing settinggroup in the remote IED depending on the switching situation in the localsubstation and so on.If equipped with a 64kbit/s LDCM module, the IED can be configured to sendeither 192 binary signals or 3 analog and 8 binary signals to a remote IED. Ifequipped with a 2Mbps LDCM module, the IED can send 9 analog channels and192 binary channels to a remote IED. For line differential, the number of binarysignals is limited to 8 because the line differential communication is included in thesame telegrams.Link forwarding GUID-DD3CF47C-A202-4416-954A-EFC0F8BEBCB7 v1If it is not possible to have a communication link between each station, the solutionhas been to set the protection up in a slave-master-slave configuration. This meansthat in Figure 164, only IED-B has access to all currents and, therefore, this is the1MRK 505 393-UEN B Section 19Remote communicationLine differential protection RED650 2.2 IEC 393Application manual
