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1MRS 755310
Feeder Protection Relay
Technical Reference Manual
"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.
REF 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.
REF 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 I/O module has not been installed. Configuration set 2 includes
additional information, e.g. output contact events 6...8 (SO3...SO5) and digital input
events 3...5 (DI3...DI5), provided that the optional I/O 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.
REF 610
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