ABB Relion 670 Series Technical Reference Manual page 677

1MRK505222-UUS C
Technical reference manual
The blocking possibilities are:
• Block/deblock for open command. It is used to block operation for open
command. Note that this block signal also affects the input OPEN for immediate
command.
• Block/deblock for close command. It is used to block operation for close
command. Note that this block signal also affects the input CLOSE for immediate
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, signal from DO (Data Object) Behavior (IEC
61850). If DO Behavior is set to "blocked" 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
The substitution part in SXCBR is used for manual set of the position for 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 position values are blocked for updating and
other signals related to the position are reset. The substituted values are
stored in a non-volatile memory.
Time diagrams
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 338 explains these two timers during the execute phase.
Section 12
Control
671