13.11
Date Code 20171006 Instruction Manual SEL-400 Series Relays
SELOGIC Control Equation Programming
SEL
OGIC Control Equation Elements
command. Use the TAR PSVnn command or the TAR ASVnnn command to
view the Relay Word row containing the protection or automation Boolean bit
specified by the number nn. You can also view the status of Boolean bits through
the relay LCD front-panel display by selecting
RELAY ELEMENTS from the Main
Menu and scrolling through the rows of Relay Word bits.
SELOGIC Control Equation Math Variables
SELOGIC control equation math variables are math calculation storage results. As
with protection and automation SEL
OGIC control equation Boolean variables,
there are separate storage areas for protection and automation math calculations.
The quantities of SEL
OGIC control equation math variables available in the
SEL-400 series relays are shown in Tab le 13.6.
Use math variables in freeform programming to store the results of math calcula-
tions as arguments in math calculations and comparisons. Example 13.5 illus-
trates SEL
OGIC control equation math 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 13.4 SELOGIC Control Equation Boolean Variables
The equations below show freeform SELOGIC control equation program-
ming examples that use SEL
OGIC control equation Boolean 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 SEL
OGIC control equation variables more than once in freeform
programming. The SEL
OGIC control equations below use ASV100 and
ASV101 to calculate intermediate results.
# Remote control 1
ASV100 := RB14 AND ALT01 # Supervise remote control with ALT01
ASV101 := RB15 AND PLT07 # Supervise remote control with PLT07
ASV201 := ASV100 OR ASV101 # Store desired control in ASV201
# Remote control 2
ASV100 := RB18 AND ALT09 # Supervise remote control with ALT09
ASV101 := RB19 AND PLT13 # Supervise remote control with PLT13
ASV202 := ASV100 OR ASV101 # Store desired control in ASV202
Ta b l e 1 3. 6 SELOGIC Control Equation Math Variable Quantities
Type Typical Quantity Name Range
Protection SELOGIC control equation
math variables
64 PMV01–PMV64
Automation SEL
OGIC control equa-
tion math variables
256 AMV001–AMV256
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