• Block/deblock for open command. It is used to block operation for open
command.
• Block/deblock for close command. It is used to block operation for close
command.
• Update block/deblock of positions. It is used to block the updating of position
values. Other signals related to the position will be reset.
• Blocking of function, BLOCK. If BLOCK signal is set, it means that the
function is active, but no outputs are generated, no reporting, control
commands are rejected and functional and configuration data is visible.
The above blocking outputs are stored in a non-volatile memory.
Substitution
M16494-21 v7
The substitution part in SXSWI 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 the real process value is erroneous of some reason. SXSWI 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 SXSWI 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
M16494-26 v6
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 142 explains these two timers during the execute
phase.
Section 9 1MRK 505 384-UEN A
Control
300 Breaker protection REQ650 2.2 IEC
Technical manual
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