3.17
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Basic Relay Operations
Making Simple Settings Changes
Note that some settings classes have only one instance and you do not specify the
instance designator when accessing these classes. An example is the Global set-
tings class. You can view or modify Global settings with a communications ter-
minal by entering SET G as shown in the ASCII Command column of Table 3.4 .
The relay presents the Global settings categories at the SET G command; no
instance numbers follow SET G. Conversely, the Port settings command has five
instances (PORT F, PORT 1, PORT 2, PORT 3, and PORT 5). To access the
PORT 1 settings, type SET P 1 <Enter>. If you do not specify which port to set,
the relay defaults to the active port (the port you are presently using).
The Group settings can have the optional one-letter acronym S attached to the
command; you can enter SET 1 or SET S 1 for Group 1 settings, SET 2 or
SET S 2 for Group 2 settings, etc. If you do not specify which group to set, the
relay defaults to the present active group. If Group 6 is the active group, and you
type SET <Enter>, for example, you will see the settings prompts for the
Group 6 settings.
Alias Settings
Although the relay provides extensive programming facilities and opportunity for
comments, troubleshooting customized programs is sometimes difficult. Aliases
provide an opportunity to assign more meaningful names to the generic variable
names in order to improve the readability of the program.
Front Panel Front-panel HMI settings Front Panel SET F P, A, O, 2
Protection
SEL
OGIC
control equations
Protection-related SEL
OGIC
control equations
Group 1
•
•
•
Group 6
Group 1 protection SELOGIC
control equations
•
•
•
Group 6 protection
SEL
OGIC control equations
SET L 1
•
•
•
SET L 6
P, 2
Automation
SEL
OGIC control
equations
Automation-related SEL
OGIC
control equations
Block 1
•
•
•
Block 10
Block 1 automation
SEL
OGIC control equations
•
•
•
Block 10 automation
SEL
OGIC control equations
SET A 1
•
•
•
SET A 10
A, 2
DNP3 Direct Network Protocol data
remapping
Map 1
•
•
•
Map 5
SET D 1
•
•
•
SET D 5
P, A, O, 2
Output SEL
OGIC
control equations
Relay control output settings
and MIRRORED BITS commu-
nication transmit equations
Output SET O O, 2
Bay Bay control settings Bay SET B P, 2
Alias Set aliases Analog or digi-
tal quantities
SET T P, A, O, 2
Notes Freeform programming to
leave notes in the relay
Notes 100 lines SET N P, A, O, 2
Table 3.4 SEL-451 Settings Classes and Instances (Sheet 2 of 2)
Class Description Instance Description ASCII Command Access Level
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