Configuration
5-12 7SA522 Manual
C53000-G1176-C119-2
− TTrip Log Buffer in the Device,
− SSystem Interface,
− CCFC, Information is processed by CFC Program of the User-definable Logic.
− CM Control of switchgears if a switch plant is indicated in the Control Menu of
the device
5.2.3 Control Commands for switching devices
Control commands are output indications which are specially configured for the trans-
mission of control signals to power plant switching devices (circuit breakers, isolators,
etc.). Once the type of a command has been established, DIGSI
®
4 reserves a corre-
sponding number of output relay contacts. For this, the corresponding output relays
are numbered consecutively. This must be observed when wiring the relays to the cor-
responding power plant to be controlled.
Table 5-1 shows the most important command types. The following Figures 5-5
through 5-9 show time diagrams, control settings, and the order of relay positioning for
frequently used command types.
For double commands, the first output relay is selected using DIGSI
®
4. The other out-
put relays will be automatically selected by DIGSI
®
4. In the sequence of output relays,
each TRIP command is placed before the associated CLOSE command. For
commands with feedback indications, DIGSI
®
4 reserves another line in the configu-
ration matrix for the switching device feedback indications. Here, the OPEN position
feedback is placed before the CLOSED position feedback as well.
For Figures 5-5 through 5-9, the following abbreviations apply:
− C+ Relay contact for closing
− C– Relay contact for tripping
− CC Relay contact is common
− CCC Relay contact is common to a bus
− L+; L– Control voltage
Table 5-1 Most important command types
Single Command with
Single Output
With 1 relay without feedback
with feedback
&B6
&)B6
Double Command with
Single Outputs
With 2 relays without feedback
with feedback
&B'
&)B'
Double Command with Single
Outputs plus Common Output
With 3 relays without feedback
with feedback
&B'
&)B'
Double Command with Double
Outputs
With 4 relays without feedback
with feedback
&B'
&)B'
Double Command with Double
(Close) and Single (Trip)
Outputs
With 3 relays without feedback
with feedback
&B'
&)B'
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