P54x/EN GS/La4 Getting Started
(GS) 3-14
MiCOM P543, P544, P545 & P546
GS
1.8.6 Setting changes
1. To change the value of a setting, go to the relevant cell in the menu, then press the enter
key
to change the cell value. A flashing cursor on the LCD shows the value can be
changed. If a password is required to edit the cell value, a password prompt appears.
2. To change the setting value, press the or keys. If the setting to be changed is a
binary value or a text string, select the required bit or character to be changed using the
and keys.
3. Press to confirm the new setting value or the clear key to discard it. The new setting
is automatically discarded if it is not confirmed in 15 seconds.
4. For group settings and disturbance recorder settings, the changes must be confirmed
before they are used by the relay.
To do this, when all required changes have been entered, return to the column heading level
and press the key. Before returning to the default display the following prompt appears.
Update settings
Enter or clear
5. Press
to accept the new settings or press to discard the new settings.
Note: If the menu time-out occurs before the setting changes have been
confirmed, the setting values are also discarded.
Control and support settings will be updated immediately after they are entered, without the
‘Update settings’ prompt.
1.9 Front communication port user interface
The front
communication port is provided by a 9-pin female D-type connector located under
the bottom hinged cover. It provides EIA(RS)232 serial data communication and is intended
for use with a PC locally to the relay (up to 15 m distance) as shown in Figure 6. This port
sup
ports the Courier communication protocol only. Courier is the communication language
developed by ALSTOM Grid to allow communication with its range of protection relays. The
front port is particularly designed for use with the relay settings program MiCOM S1 Studio
which runs on Windows
TM
2000 or XP.
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