U.4.15
Date Code 20090715 User’s Guide SEL-421 Relay
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 settings class. You can view or modify Global settings with a
communications terminal by entering SET G as shown in the ASCII
Command column of Table 4.5. The relay presents the Global settings
categories at the SET G command; no instance numbers follow SET G.
Table 4.5 Settings Classes and Instances
Class Description Instance Description
ASCII
Command
Access
Level
Global Relay-wide applications
settings
Global SET G P, A, O, 2
Group Individual scheme settings Group 1
•
•
•
Group 6
Group 1 settings
•
•
•
Group 6 settings
SET 1, SET S 1
•
•
•
SET 6, SET S 6
P, 2
Breaker
Monitor
Circuit breaker monitoring
settings
Breaker
Monitor
SET M P, 2
Port Communications port settings PORT F Front-panel port SET P F P, A, O, 2
PORT 1
•
•
•
PORT 3
PORT 1 settings
•
•
•
PORT 3 settings
SET P 1
•
•
•
SET P 3
PORT 5 Communications card
settings
SET P 5
Report Event report and SER
a
settings
a
SER is the Sequential Events Recorder; see SER (Sequential Events Recorder) on page A.3.34.
Report SET R P, A, O, 2
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
SEL
OGIC 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
b
•
•
•
Block 10
b
The SEL-421-1 and SEL-421-2 have only one block of automation SELOGIC control equations.
Block 1 automation
SEL
OGIC control equations
•
•
•
Block 10 automation
SEL
OGIC control equations
SET A 1
•
•
•
SET A 10
A, 2
DNP Direct Network Protocol data
remapping
DNP SET D P, A, O, 2
Output
SEL
OGIC
control
equations
Relay control output
settings and M
IRRORED BITS
communication transmit
equations
Output SET O O, 2
Alias Set aliases Analog
or digital
quantities
SET T P, A, O, 2
Courtesy of NationalSwitchgear.com
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