ABB REB670 Series, Applications Manual

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may be used by other functions in the same way as the corresponding outputs of the SXCBR
and SXSWI function.
When a command has been issued from the connected SCSWI function, the XLNPROXY
function awaits the response on it from the represented switch through the inputs POSVAL
and OPOK. While waiting for the switch to start moving, it checks if the switch is blocked for
the operation. When the switch has started moving and no blocking condition has been
detected, XLNPROXY issues a response to the SCSWI function that the command has started.
If OPOK is used, this response is given when XLNPROXY receives the signal.
If no movement of the switch is registered within the limit
tStartMove, the command is
considered failed, and the cause of the failure is evaluated. In the evaluation, the function
checks if the state of the represented switch is indicating that the command is blocked in any
way during the command, and gives the appropriate cause to the SCSWI function. This cause is
also shown on the output L_CAUSE as indicated in the following table:
Table 44: Possible cause values from XLNPROXY
Cause No Cause Description Conditions
8 Blocked-by-Mode The BEH input is 5.
2 Blocked-by-switching-
hierarchy
The LOC input indicates that only local commands
are allowed for the breaker IED function.
-24 Blocked-for-open-cmd The BLKOPN is active indicating that the switch is
blocked for open commands.
-25 Blocked-for-close-cmd The BLKCLS is active indicating that the switch is
blocked for close commands.
9 Blocked-by-process 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.
5 Position-reached Switch is already in the intended position.
-31 Switch-not-start-moving Switch did not start moving within tStartMove.
-32 Persistent-intermediate-state The switch stopped in intermediate state for longer
than tIntermediate.
-33 Switch-returned-to-init-pos Switch returned to the initial position.
-34 Switch-in-bad-state Switch is in a bad position.
-35 Not-expected-final-position Switch did not reach the expected final position.
The OPCAP input and output are used for the CBOpCap data of a XCBR
respectively SwOpCap for a XSWI. The interpretation for the command
following is controlled through the setting
SwitchType.
12.3.6 Reservation function (QCRSV and RESIN)
M16609-3 v4
The purpose of the reservation function is primarily to transfer interlocking information
between IEDs in a safe way and to prevent double operation in a bay, switchyard part, or
complete substation.
For interlocking evaluation in a substation, the position information from switching devices,
such as circuit breakers, disconnectors and earthing switches can be required from the same
bay or from several other bays. When information is needed from other bays, it is exchanged
over the station bus between the distributed IEDs. The problem that arises, even at a high
speed of communication, is a space of time during which the information about the position
Section 12 1MRK 505 370-UEN D
Control
292 Busbar protection REB670
Application manual