Controlling Device Functions
219
7SS52 V4 Manual
C53000-G1176-C182-1
Click Device → Trigger test fault recording... on the menu bar. The window
Fault Record Length opens (Figure 6-14, page 219).
Enter the desired fault record length and click OK. The fault recording starts. The
fault record length must be within the specified limits.
Figure 6-14 Fault Record Length dialog box in DIGSI
6.3.2 Blocking
6.3.2.1 Blocking the TRIP Command
The TRIP commands can be blocked for the entire protection or busbar-selectively.
With the TRIP command blocked all device-internal protection functions (central unit,
bay unit) remain active. However, a TRIP command is not initiated i.e., the TRIP com-
mand relays configured in the bay units are not activated. This is useful e.g., during
the commissioning phase.
Blocking the TRIP
command -
entire protection
The blocking of the TRIP command for the entire protection is blocked with the tagging
“TRIP blocking“ (FNo. 10441/CU) or via a binary input “>TRIP blocking“
(FNo. 10440/CU). The blocking is indicated by the annunciation “TRIP blocked“
(FNo. 10442/CU).
Blocking the TRIP
command -
busbar-selectively
The busbar-selective blocking of the TRIP command can be done at the central unit
for the connected bay units as well as at the bay units directly via DIGSI, binary input
or local operation
The blocking via the central unit is done via “$03 BlkTrip” (FNo. 177.1337/CU)
or a binary input “>Blk Trip $03” (FNo. 177.1336/CU) is indicated by the annun-
ciation "$03 BlkdTrip" (FNo. 177.1338/CU) or "TRIP blocked" (FNo. 10442/
CU).
The blocking via the bay unit is done via “>Blk.BB TRIP” (FNo. 7629/BU) or
“>Blockage” (FNo. 4201/BU) is indicated by the annunciation "BB TRIP block"
(FNo. 7657/BU).
The system will always be reset when the blocking is deactivated in order to complete-
ly terminate the processes triggered by tests and checks (e.g. CBF).
Note
You can also trigger the fault recording via the operator panel of the central unit. If you
want to know more on this topic, please read the System Description /1/.
To Next Page
Loading...
