2.20 Command Processing
197
7ST6 Manual
E50417-G1176-C251-A3
The plus sign indicated in the indication is a confirmation of the command execution:
The command output has a positive result, as expected. A minus sign means a neg-
ative, i.e. an unexpected result; the command was rejected. Figure 2-64 shows an
example in the operational indications command and feedback of a positively run
switching action of the circuit breaker.
The check of interlocking can be programmed separately for all switching devices and
tags that were set with a tagging command. Other internal commands such as over-
riding or abort are not tested, i.e. are executed independently of the interlockings.
Figure 2-64
Example of an operational indication for switching circuit breaker 52
Standard Interlock-
ing
The standard interlocking includes the checks for each switchgear which were set
during the configuration of inputs and outputs, see SIPROTEC 4 System Description.
An overview for processing the interlocking conditions in the relay is shown in Figure
2-65.
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