The following figure shows the logical inputs and outputs of the Circuit-breaker function block.
[dwfuncls-140212-01.tif, 2, en_US]
Figure 8-5 Logical Inputs and Outputs of the Circuit-Breaker Function Blocks
Table 8-5 and Table 8-6 list the inputs and outputs with a description of their function and type. For inputs,
the effect of Quality = invalid on the value of the signal is described.
EXAMPLE
If the signal >Ready has the Quality = invalid, then the value is set to cleared. In problematic operating
states, the circuit breaker should signal that it is not ready for an Off-On-Off cycle.
Table 8-5 Inputs of the Circuit-Breaker Function Block
Signal Name Description Type Default Value if
Signal Quality =
invalid
>Ready
The signal >Ready indicates that the OFF-ON-OFF
cycle is possible with the circuit breaker.
This signal is used for the AREC standby status.
SPS Going
>Acquisition
blocking
The binary input activates acquisition blocking. You
can also set this binary input with an external toggle
switch.
SPS Unchanged
>Reset
AcqBlk&Subst
Acquisition blocking and the substitution of the circuit
breaker are reset with this input. If the input is acti-
vated, setting the acquisition blocking and the substi-
tution is blocked.
SPS Unchanged
>Reset switch
statist.
Among other things, the binary input sets the opera-
tion counter for the switch to the value 0.
SPS Unchanged
Control Functions
8.2 Switching Devices
SIPROTEC 5, Overcurrent Protection, Manual 1081
C53000-G5040-C017-8, Edition 07.2017
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