P.14.13
Date Code 20151029 Protection Manual SEL-411L Relay
SELOGIC Control Equation Programming
SEL
OGIC Control Equation Elements
SELOGIC Control
Equation Variables
SELOGIC control equation variables are Boolean storage locations. Each
variable equals either logical 1 or logical 0. This manual refers to these
variables and the relay displays these as 1 and 0, respectively. Think also of
the states 1 and 0 as True and False when you evaluate Boolean logic
statements. The quantities of SEL
OGIC control equation variables available in
the different programming areas are listed in Table 14.9.
Use the SEL
OGIC control equation variables in free-form logic statements in
any order you want. Use a SEL
OGIC control equation variable more than once
in free-form logic programming, and use SEL
OGIC control equation variables
as arguments in SEL
OGIC control equations. Example 14.4 illustrates
SEL
OGIC control equation variable usage. You can view the results of
protection and automation math variables using the METER command. Use
the MET PMV command to see all protection math variable results (PMV01–
PMV64). Similarly, use the MET AMV command to see all automation math
variable results (AMV001–AMV256).
EXAMPLE 14.4 SELOGIC Control Equation Variables
The equations below show free-form SEL
OGIC control equation
programming examples that use SEL
OGIC control equation variables.
Each line has a comment after the # that provides additional detail.
PSV01 := 1 # Set PSV01 to 1 always.
PSV09 := PSV54 AND ASV005 # Set to result of Boolean AND.
PSV02 := PMV05 > 5 # Set if PMV05 is greater than 5
You can use SELOGIC control equation variables more than once in
free-form programming. The SEL
OGIC control equations below use
ASV100 and ASV101 to calculate intermediate results.
# Remote control 1
Table 14.7 First Execution Bit Operation on Automation Settings Change
Name Description
AFRTEXA Relay sets on settings change and clears after each automation pro-
gramming block has been executed once.
AFRTEXP Relay sets on settings change. Relay clears after it enables protec-
tion and all automation programming blocks have been executed
once.
PFRTEX Relay sets on settings change. Relay clears after protection runs for
one cycle.
Table 14.8 First Execution Bit Operation on Protection Settings Change,
Group Switch, and Source Selection
Name Description
AFRTEXA Relay does not set.
AFRTEXP Relay sets when listed event occurs. Relay clears after it enables
protection and all automation programming blocks have been exe-
cuted once.
PFRTEX Relay sets when listed event occurs. Relay clears after protection
runs for one cycle.
Ta b l e 1 4.9 S E LOGIC Control Equation Variable Quantities
Type Quantity Name Range
Protection SELOGIC control equation variables 64 PSV01–PSV64
Automation SEL
OGIC control equation variables 256 ASV001–ASV256
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