Schweitzer Engineering Laboratories SEL-421-4 - Page 924

4.28
SEL-400 Series Relays Instruction Manual Date Code 20171006
Front-Panel Operations
Front-Panel Menus and Screens
Active Group
Perform the following steps to change the active setting group:
Step 1. Select the
ACTIVE GROUP option of the SET/SHOW submenu screen
(shown in Figure 4.29) to change the settings group.
The relay performs a password validation test at this point to confirm
that you have Breaker Access Level authorization or above.
Step 2. If access is allowed, and all the results of SEL
OGIC control equations
SS1–SS6 are not logical 1 (asserted), then the relay displays the
EDIT
ACTIVE GROUP
screen in Figure 4.31
The relay shows the active group and underlines the group number
after
NEW GROUP =.
Step 3. Use the Up Arrow and Down Arrow pushbuttons to increase or decrease
the
NEW GROUP number.
Step 4. Once you have selected the new active group, press ENT to change the
relay settings to this new settings group.
Date/Time
Another submenu item of the SET/SHOW first screen (Figure 4.29) is the DATE/
TIME
screen shown in Figure 4.32. By default, the relay generates date and time
information internally; you can also use external high-accuracy time modes with
time sources such as a GPS receiver.
Figure 4.30 Sample Settings Input Screens
Character or String or
SELOGIC control equations
RID
?
A B C D E F G H I J
K L M N O P Q R S T
U V W X Y Z 0 1 2 3
4 5 6 7 8 9 - . ( )
^ & *
_
+ - / ; :
`
< > , { } [ ] |
ACCEPT BACKSPACE
Relay Identifier (40
Basic Alphanumeric
CTRW
?
CURRENT TRANSFORMER
0 1 2 3 4 5
6 7 8 9 - .
A B C D E F
G H I J K L
M N O P Q R
S T U V W X
Y Z
ACCEPT BACKSPACE
Setting Options
51S1O
SELECT AN OPTION
51S1 Op. Qty. (IAn,IB
IAL
IBL
ICL
IMAXL
I1L
3I2L
310L
IA1
IB1
Figure 4.31 Changing the ACTIVE GROUP
EDIT ACTIVE GROUP
ACTIVE GROUP = 3
NEW GROUP = 3
SET/SHOW
PORT
GLOBAL
GROUP
ACTIVE GROUP = 3
DATE/TIME