Table 16:
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
.
8.2.1.5
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 of the switching
devices are uncertain. The interlocking function uses this information for
evaluation, which means that also the interlocking conditions are uncertain.
To ensure that the interlocking information is correct at the time of operation, a
unique reservation method is available in the IEDs. With this reservation method,
the bay that wants the reservation sends a reservation request to other bays and then
waits for a reservation granted signal from the other bays. Actual position
1MRK 511 423-UEN A
Section 8
Control
Bay control REC650 2.2 IEC
119
Application manual
