Schweitzer Engineering Laboratories SEL-421-4, Instruction Manual

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3.25
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Basic Relay Operations
Making Simple Settings Changes
Example 3.2 Leaving a Note in the Relay
For this example, assume you are testing a line, but you will be away for a
few days. You want to leave your colleague, Marius, a note telling him where
you left the drawings and settings. Use the Notes function in the relay to
leave the note, as shown in
Figure 3.18 . All relevant procedures in this sec-
tion assume that you have successfully established communication with the
relay. In addition, you must be familiar with relay access levels and pass-
words to change the default access level passwords. Furthermore,
Step 1
below applies to all relevant tests, and is not repeated for each test.
Step 1. Prepare to control the relay at Access Level 2.
a. Using a communications terminal, type ACC <Enter> .
b. Type the Access Level 1 password and press <Enter> .
You will see the Access Level 1 => prompt.
c. Type 2AC <Enter> .
d. Type the correct password to go to Access Level 2.
You will see the Access Level 2 =>> prompt.
Step 2. Access the Notes settings.
a. Type SET N <Enter> to access the Notes settings.
b. At the Line 1 settings
?
prompt, type the Line 1 text shown
in Figure 3.18 (as many as 70 characters without wrap), and
press <Enter> .
The relay verifies that this is a valid entry, then responds
with the next line prompt
2:
followed by the settings
?
prompt.
Step 3. At the Line 2 settings
?
prompt, type the Line 2 text shown in
Figure 3.18 .
Because there are more than 70 characters, the relay rejects the entry.
Re-enter the text, but keep the number of characters at 70 or
fewer.
Step 4. After the last entry, type END <Enter> .
This tells the relay that you have completed the setting change.
Step 5. Type Y <Enter> at the prompt
Save settings (Y,N)
to save
the settings.