Siemens SIPROTEC 7SK80 Manual page 276

Functions
2.19 Breaker Control
Figure 2-100
The configured interlocking causes are displayed on the device display. They are marked by letters explained
in the following table.
Table 2-19
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).
Switching Authority
The interlocking condition "Switching authority" serves for determining the switching authority. It enables the
user to select the authorized command source. The following switching authority ranges are defined in the fol-
lowing priority sequence:
• LOCAL
• DIGSI
• REMOTE
276
DIGSI dialog box for setting the interlocking conditions
Command types and corresponding messages
Interlocking Commands Abbrev.
L
S
Z
P
B
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
Display
L
A
Z
P
B