ABB Relion 670 Series Applications Manual page 575

1MRK 511 401-UEN Rev. K
Section 22
22.1 Binary signal transfer
22.1.1 Identification
Function description
Binary signal transfer,
receive
Binary signal transfer,
2Mbit receive
Binary signal transfer,
transmit
Binary signal transfer,
2Mbit transmit
22.1.2 Application
The IEDs can be equipped with communication devices for line differential communication
(not applicable for RER670) and/or communication of binary signals between IEDs. The same
communication hardware is used for both purposes.
Sending of binary signals between two IEDs is used in teleprotection schemes and for direct
transfer trips. In addition to this, there are application possibilities, for example, blocking/
enabling functionality in the remote substation, changing setting group in the remote IED
depending on the switching situation in the local substation and so on.
If equipped with a 64kbit/s LDCM module, the IED can be configured to send either 192 binary
signals or 3 analog and 8 binary signals to a remote IED. If equipped with a 2Mbps LDCM
module, the IED can send 9 analog channels and 192 binary channels to a remote IED.
This functionality is mainly used for the line differential protection. However, it can be used in
other products as well.
LDCM is preferably intended to be used in binary mode. However, in case the LDCM module is
used in the analog mode, then the only available pre-processing SMAI blocks will be either in
3ms or 8ms cycle. Connecting the remote currents to either of these two types of SMAI blocks
might impact the performance of protection functions. Namely, all functions that are running
in the same cycle as the used processing SMAI block for the remote currents may experience
extra time delays in the operation due to the impact of LDCM buffering and transmission
delays. Thus, the application of LDCM in analog mode shall be used with caution.
Important to know when connecting LDCM to SMAI function block with 3 or 8 ms cycle time.
Bay control REC670
Application manual
Remote communication
IEC 61850 identification IEC 60617
BinSignRec1_1
BinSignRec1_2
BSR2M_305
BSR2M_312
BSR2M_322
BSR2M_306
BSR2M_313
BSR2M_323
BinSignTrans1_1
BinSignTrans1_2
BST2M_305
BST2M_312
BST2M_322
BST2M_306
BST2M_313
BST2M_323
© Copyright 2017 Hitachi Power Grids. All rights reserved
ANSI/IEEE C37.2
identification device number
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Section 22
Remote communication
IP12423-1 v2
M14849-1 v4
IP16245-1 v1
M12844-3 v5
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