Iec 60870-5-103 Remote Communication Protocol - ABB REM 610 Technical Reference Manual

1MRS 755537
4.1.13.
Motor protection Relay
Technical Reference Manual

IEC 60870-5-103 remote communication protocol

REM 610 supports the IEC 60870-5-103 remote communication protocol
(henceforward referred to as the IEC_103) in the unbalanced transmission mode.
The IEC_103 protocol is used to transfer measurand and status data from the slave
to the master. However, the IEC_103 protocol cannot be used to transfer disturbance
recorder data.
The IEC_103 protocol can be used only through the rear connection of the relay on
the optional communication module. Connecting REM 610 to a fibre-optic
communication bus requires a fibre-optic communication module. The
line-idle state of the fibre-optic communication module can be selected either via the
HMI or the SPA bus. According to the IEC_103 standard, however, the line-idle
state is "light on". To ensure communication, the line-idle state should be the same
for both the master and the slave device. The connection topology can be selected to
be either loop or star, the default being loop, and either via the HMI or the SPA bus.
The selected line-idle state and connection topology apply irrespective of which rear
communication protocol is active.
REM 610 will use the SPA bus protocol as default when the optional communication
module is in use. The protocol selection is memorized and will therefore always be
activated when the rear connection is in use. The baud rate can be selected either via
the HMI or the SPA bus. According to the IEC_103 standard, however, the baud rate
is 9.6 kbps. When the IEC_103 protocol is active, event masks are not in use.
Consequently, all events in the selected configuration set will be included in the
event reporting.
REM 610 is provided with two different selectable configuration sets, of which
configuration set 1 is used by default. Configuration set 1 is intended to be used
when the optional RTD module has not been installed. Configuration set 2 includes
additional information, e.g. temperature protection events and digital input events
3...5, provided that the optional RTD module has been installed. Function type and
information number have been mapped into configuration sets according to the
IEC_103 standard to the extent that these have been defined by the standard. If not
defined by the standard, the type of function and/or the information number have/
has been mapped into a private range.
The tables below indicate the information mapping of the corresponding
configuration sets. The column GI indicates whether the status of the specified
information object is transmitted within the general interrogation cycle. The relative
time in messages with the type identification 2 is calculated as a time difference
between the occurred event and the event specified in the column Relative time. The
measurand multiplied by the normalize factor is proportional to the rated value.
Therefore, the maximum value of each measurand is the normalize factor multiplied
by the rated value.
REM 610
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