Sel 751A - Setting Entry Error Messages; Table 6.4 SET Command Editing Keystrokes; Table 6.5 SET Command Format

6.5
Date Code 20100129 Instruction Manual SEL-751A Relay
Settings
Setting Entry Error Messages
When you issue the SET command, the relay presents a list of settings one at
a time. Enter a new setting or press <Enter> to accept the existing setting.
Editing keystrokes are listed in Tab l e 6. 4.
The relay checks each entry to ensure that the entry is within the setting range.
If it is not in range, an
Out of Range message is generated, and the relay
prompts you for the setting again.
When all the settings are entered, the relay displays the new settings and
prompts you for approval to enable them. Press Y <Enter> to enable the new
settings. The relay is disabled for as long as five seconds while it saves the
new settings. The ALARM Relay Word bit is set momentarily, and the
ENABLED LED extinguishes while the relay is disabled.
To change a specific setting, enter the command shown in Table 6.5 .
Setting Entry Error Messages
As you enter relay settings, the relay checks the setting entered against the
range for the setting as published on the relay setting sheet. If any setting
entered falls outside the corresponding range for that setting, the relay
immediately responds
Out of Range and prompts you to reenter the setting.
In addition to the immediate range check, several of the settings have
interdependency checks with other settings. The relay checks setting
interdependencies after you answer
Y to the Saves Settings? prompt, but
before the settings are stored. If any of these checks fail, the relay issues a
self-explanatory error message, and returns you to the settings list for a
correction.
Table 6.4 SET Command Editing Keystrokes
Press Key(s) Results
<Enter> Retains the setting and moves to the next setting.
^ <Enter> Returns to the previous setting.
< <Enter> Returns to the previous setting category.
> <Enter> Moves to the next setting category.
END <Enter> Exits the editing session, then prompts you to save the settings.
<Ctrl+X> Aborts the editing session without saving changes.
Table 6.5 SET Command Format
SET n m s TERSE
where:
n is left blank or is D, G, L, F, R, M, or P to identify the class of settings.
m is blank (1) or is 1, 2, or 3 when n = G or L for group settings.
m is left blank or is F, 1, 2, 3, or 4 when n = P.
s is the name of the specific setting you wish to jump to and begin setting.
If s is not entered, the relay starts at the first setting (e.g., enter 50P1P to
start at Phase Overcurrent Trip level setting).
TERSE instructs the relay to skip the settings display after the last setting.
Use this parameter to speed up the SET command.
If you wish to review the settings before saving, do not use the TERSE
option.