4.26
SEL-400 Series Relays Instruction Manual Date Code 20171006
Front-Panel Operations
Front-Panel Menus and Screens
Figure 4.29 shows an example of entering the SEL-451 setting CTRW (Terminal
W CT ratio) from the front panel. At the
MAIN MENU, select the SET/SHOW item and
press ENT. The LCD screen displays the
SET/SHOW screen as shown in
Figure 4.29. You can use the navigation pushbuttons to select the relay settings
class (
PORT, GROUP, and GLOBAL) or to change the ACTIVE GROUP or the DATE/
TIME
. For this example, select the GROUP class.
Next, select the particular instance of the settings class. For the
PORT settings
class, the instances are
PORT 1, PORT 2, PORT 3, PORT F, and PORT 5. For the
GROUP class, the instances are the numbered groups from 1 through 6 and M, the
breaker monitor (see the
GROUP screen in Figure 4.29). The class GLOBAL, the set-
ting
ACTIVE GROUP = n (where n is a number from 1 to 6), and the settings for
DATE/TIME have no settings instance screens. In the GROUP screen, move the high-
light box to 3 and press ENT.
Proceed to selecting the settings category. The
GROUP submenu in Figure 4.29 is
an example of settings Group 3 categories. Once you have highlighted the set-
tings category, pressing ENT causes the relay to display the particular settings in
that category. The
LINE CONFIGURATION screen in Figure 4.29 shows the settings
that you can set in the line configuration settings category.
To edit or examine a setting, use the Up Arrow and Down Arrow pushbuttons to
highlight that setting, then press ENT. The relay displays a settings entry screen
with the existing setting value (see the
SET CTRW screen in Figure 4.29). If the
prompt for the selected setting does not fit on the line, the relay scrolls the setting
prompt across the screen.
Enter the setting name using a method similar to the method described in Relay
Elements (Relay Word Bits) on page 4.19. Place characters in the element name
field (with the block cursor) using the navigation pushbuttons.
If the data you entered are valid (within settings range checks), the front-panel
display returns to the settings category screen that shows each setting and corre-
sponding present value (see the
LINE CONFIGURATION screen of Figure 4.29). If
the data you entered are invalid, the relay displays an error message screen, then
returns to the particular settings entry screen so you can attempt a valid settings
entry (see the
CTRW screen of Figure 4.29).
When finished entering the new settings data, press ESC. The relay prompts you
with a
Save Settings screen. Using the navigation pushbuttons, answer YES to
make the settings change(s), or
NO to abort the settings change(s).
ACTIVE GROUP Active settings group number 1–6
DATE/TIME Date and time settings
Table 4.9 Settings Available From the Front Panel (Sheet 2 of 2)
Class/Setting Description
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