Siemens SIPROTEC 7SD80 Manual page 224

Functions
2.18 Breaker Control
The following figure shows the configuration of the interlocking conditions using DIGSI.
Figure 2-88 DIGSI dialog box for setting the interlocking conditions
The configured interlocking causes are displayed on the device display. They are marked by letters explained
in the following table.
Table 2-15 Command types and corresponding messages
Interlocking Commands
Switching Authority
System interlocking
Zone controlled
SET = ACTUAL (switch direction check)
Protection blocking
Control Logic using CFC
For the bay interlocking a control logic can be structured via the CFC. Via specific release conditions the infor-
mation "released" or "bay interlocked" are available (e.g. object "52 Close" and "52 Open" with the data values:
ON / OFF).
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Abbrev.
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S
Z
P
B
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
Display
L
A
Z
P
B