Siemens SIPROTEC 7SS523 V3.2 Manual page 246

Control During Operation
6.3.5.2 Reset Blocking of Isolator Fault
from the PC
with DIGSI
6.3.6 Trigger Initial Start and Restart
230
Depending on the setting of the parameter ISOL Malfunct (6302/CU), there are dif-
ferent options of how the blocking will behave (Kapitel 5.5.1.9, Seite 145).
The function is acknowledged by applying "Reset IsoMalBl" or via binary input
">Reset IsoMalBl" (BI-FNo. 7/CU) in the central unit.
To reset the blocking of the isolator fault at the central unit (PC linked to central unit)
proceed as follows:
Click Control in the navigation window.(see Figure 6-23, page 229).
Double-click Reset blocking of isolator fault in the function selection. The reset-
ting of the blocking can be protected by the password for the parameter set. If you
have activated this password you will be prompted to enter it before the command
is first executed since a connection was established. A dialog box opens for this
purpose.
Enter the correct password in the box named Password and then click OK. If the
password is wrong, you will receive an error message. When the password is cor-
rect, the blocking will be reset.
Note
If the parameter ISOL Malfunct (6302/CU) is set to alarm only, the function
Reset blocking of isolator fault is not available.
In case of an initial start will be cleared
- fault records
- fault annuciation buffer
- operational event buffer
- alarm list buffer
The device settings are contained in the parameter set and these are not changed in
case of an initial start.
The restart, to the contrary, is equivalent to switching 7SS52 V4 off and on. In case of
a restart operational annunciations, fault events, fault records, and the setting are
retained. Annunciations that are subject to general interrogation are retrieved and the
connection to the bay units is re-established.
Caution!
Executing the commands Reset or Resume will clear all device buffers and Oscillo-
graphic Records. Before initial start you may want to back-up the settings and buffer
contents by means of the DIGSI Device Configuration.
7SS52 V4 Manual
C53000-G1176-C182-1