ABB RED650 Technical Manual page 372

Section 12
Control
366
All switches in open position:
All switches in closed position:
At least one switch in open position and the
other(s) in closed position:
Any switch in intermediate position:
Any switch in bad state:
The time stamp of the output multi-phase position from switch control will have
the time stamp of the last changed phase when it reaches the end position. When it
goes to intermediate position or bad state, it will get the time stamp of the first
changed phase.
In addition, there is also the possibility that one of the one-phase switches will
change position at any time due to a trip. Such situation is here called pole
discordance and is supervised by this function. In case of a pole discordance
situation, that is, the positions of the one-phase switches are not equal for a time
longer than the setting tPoleDiscord, an error signal POLEDISC will be set.
In the supervision phase, the switch controller function evaluates the "cause"
values from the switch module circuit breaker (SXCBR). At error the "cause" value
with highest priority is shown.
Blocking principles
The blocking signals are normally coming from the bay control function (QCBAY)
and via the IEC 61850 communication from the operator place.
The different blocking possibilities are:
• Block/deblock of command. It is used to block command for operation of
position.
• Blocking of function, BLOCK. If the 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 different block conditions will only affect the operation of this
function, that is, no blocking signals will be "forwarded" to other
functions. The above blocking outputs are stored in a non-volatile
memory.
Dependence on operator place
For the commands from a communication protocol, such as IEC 61850-8-1 and
DNP, and through the inputs L_SEL, L_OPEN and L_CLOSE, the operator place is
evaluated, and only the commands from enabled operator places are accepted, see
Table 189. Commands through the inputs L_SEL, L_OPEN and L_CLOSE are
always from the local operator place. For commands through the inputs AU_OPEN
1MRK 505 394-UEN A
switch control position = open
switch control position = closed
switch control position = intermediate
switch control position = intermediate
switch control position = bad state
GUID-AB327F15-AF44-4ACC-8FA5-2A52AE4AE090 v3
Line differential protection RED650 2.2 IEC
M13484-37 v5
Technical manual