SEL-701-1 Monitor
Date Code 20011009
SEL
OGIC®
Control Equations and Monitor Logic
SEL
OGIC
Control Equations
B.12
SEL
OGIC
Control Equations
SEL
OGIC
control equations combine monitor protection and control elements with
logic operators to create custom protection and control schemes. This section shows
how to set the protection and control elements (Relay Word bits) in the SEL
OGIC
control equations.
SEL
OGIC
control equations are set with combinations of Relay Word bits to
accomplish such functions as:
Tripping circuit breakers.
Assigning contact inputs to functions.
Operating contact outputs.
You can use SEL
OGIC
control equations to create traditional or advanced custom
schemes.
SEL
OGIC
Control Equation Operators
Build SEL
OGIC
control equation settings using logic similar to Boolean algebra
logic, by combining Relay Word bits together using one or more of the six SEL
OGIC
control equation operators listed in
. These operators are processed in a
SEL
OGIC
control equation in the order shown in
Table B.3
SELOGIC Control Equation Operators
(listed in processing order)
Operator
Logic Function
/
Rising edge detect
\
Falling edge detect
( )
parentheses
!
NOT
*
AND
+
OR
Summary of Contents for SEL-701-1
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