ABB Relion 650 Series Technical Manual page 251

1MRK 511 424-UEN B
Bay control REC650 2.2 IEC
Technical manual
and the source function. The compensation should be in the range
of 0 - 5ms.
When the switch has started moving, it issues a response to the SCSWI function
that the operation has started. If it does not start moving within tStartMove, the
command is deemed as failed, and a cause is raised on the L_CAUSE output and
sent to the SCSWI. The different causes it can identify are listed in order of priority
in table 1. The detection of the different ways of blocking is done while waiting for
movement of the switch, but the cause is not given until the tStartMove has
elapsed.
Table 114: Possible cause values from XLNPROXY
Cause Cause Description
No
8 Blocked-by-Mode
2 Blocked-by-switching-hierarchy
-24 Blocked-for-open-cmd
-25 Blocked-for-close-cmd
9 Blocked-by-process
5 Position-reached
-31 Switch-not-start-moving
-32 Persistent-intermediate-state
-33 Switch-returned-to-init-pos
-34 Switch-in-bad-state
-35 Not-expected-final-position
The L_CAUSE output keeps its output value until a new command sequence has
been started.
If the quality of the position or the communication becomes bad, the command
evaluation replaces the uncertain position value with intermediate position. Thus,
as long as the quality is bad, all commands will result in the cause Persistant-
intermediate-state, -32.
If the switch in the merging unit has the behaviour set to Test or Test
blocked, when the IED has the behaviour On or Blocked, all data from the
switch is regarded as invalid. Thus, any command will fail with the cause
PersistantiIntermediate-state, -32, and if selection is used for the switch, all
attempts to select the connected SCSWI will fail with the cause Select-failed, 3,
from the SCSWI.
Conditions
The BEH input is 5.
The LOC input indicates that only local commands are
allowed for the breaker IED function.
The BLKOPN is active indicating that the switch is
blocked for open commands.
The BLKCLS is active indicating that the switch is
blocked for close commands.
If the Blk input is connected and active indicating that the
switch is dynamically blocked. Or if the OPCAP input is
connected, it indicates that the operation capability of the
switch is not enough to perform the command.
Switch is already in the intended position.
Switch did not start moving within tStartMove.
The switch stopped in intermediate state for longer than
tIntermediate.
Switch returned to the initial position.
Switch is in a bad position.
Switch did not reach the expected final position.
Section 8
Control
245