The above blocking outputs are stored in a non-volatile memory.
Substitution
M13487-22 v5
The substitution part in SXCBR is used for manual set of the position and quality
of the switch. The typical use of substitution is that an operator enters a manual
value because that the real process value is erroneous for some reason. SXCBR
will then use the manually entered value instead of the value for positions
determined by the process.
It is always possible to make a substitution, independently of the
position indication and the status information of the I/O board.
When substitution is enabled, the other signals related to the
position follow the substituted position. The substituted values are
stored in a non-volatile memory. If the function is blocked or
blocked for update when the substitution is released, the position
value is kept the same as the last substitution value, but the quality
is changed to "questionable, old data", indicating that the value is
old and not reliable.
When the position of the SXCBR is substituted, its IEC 61850-8-1
data object is marked as “substituted", in addition to the substituted
quality, but the position quality of the connected SCSWI is not
dependent on the substitution indication in the quality, so it does not
show that it is derived from a substituted value.
Time diagrams
M13487-28 v5
There are two timers for supervising of the execute phase, tStartMove and
tIntermediate. tStartMove supervises that the primary device starts moving after the
execute output pulse is sent. tIntermediate defines the maximum allowed time for
intermediate position. Figure 181 explains these two timers during the execute
phase.
1MRK 505 394-UEN A Section 12
Control
Line differential protection RED650 2.2 IEC 375
Technical manual
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