Signal Name Description Type Default Value if
Signal Quality =
invalid
External health
The binary input External health reflects the
circuit-breaker status (EHealth).
This input will be set by the CFC using the BUILD_ENS
block. In turn, BUILD_ENS can query binary inputs that
represent the conditions OK, Warning, or Alarm (as
a result of the function Trip-circuit supervision).
ENS Unchanged
Position
The signal Position can be used to read the circuit-
breaker position with double-point indication.
DPC Unchanged
If the quality of the input signal assumes the status Quality = invalid, then the standby status (EHealth) of the
Circuit-breaker function block is set to
Warning
.
Table 6-6 Outputs of the Circuit-Breaker Function Block
Signal Name Description Type
Definitive trip
Protection has finally been tripped. SPS
Alarm suppression
The signaling contact for external alarm inhibition is suppressed during
the runtime of automatic reclosing (optional) as well as during the
command output of switching commands.
SPS
Op.ct.
The information counts the number of switching cycles of the circuit
breaker.
INS
Trip/open cmd.
This logic output is responsible for the command output Off. SPS
Close command
This logic output is responsible for the command output On. SPS
Command active
The binary output Command active is responsible for signaling a
running command (relay active or selected switching device (SEL)).
SPS
CB open hours
The statistical value counts the hours the circuit breaker is open. INS
Operating hours
The statistical value counts the hours where at least one phase current is
greater than the Current thresh. CB open parameter.
INS
Control
It is the task of the controls to execute command checks and establish communication between the command
source and the circuit breaker. Using the control settings, you specify how the commands are to be processed
(see also chapter 6.3.1 Command Checks and Switchgear Interlocking Protection).
Through the function SBO (Select Before Operate, reservation
17
), the switching device is reserved prior to the
actual switching operation, thus it remains locked for additional commands. Feedback monitoring provides
information about the initiator of the command while the command is in process, that means, informing
whether or not the command was implemented successfully. These 2 options can be selected individually in
the selection of the control model, so that 4 combinations in total are available (see the following table).
The control makes the following settings available (see next table).
Parameters
Default Setting Possible Parameter Values
(_:4201:101) Control model SBO w. enh.
security
18
direct w. normal secur.
SBO w. normal secur.
direct w. enh. security
SBO w. enh. security
(_:4201:102) SBO time-out 30.00 s
0.01 s to 1800 s
(Increment: 0.01 s)
17
In the IEC 61850 standard, reservation is described as Select before Operate (SBO).
18
This default setting is the standard control model for a switching command in an IEC 61850-compliant system.
Control Functions
6.2 Switching Devices
312 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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