13.38
SEL-400 Series Relays Instruction Manual Date Code 20171006
SELOGIC Control Equation Programming
SEL-311 and SEL-351 Series Users
Example 13.23 Converting SEL-351 Series Relay SELOGIC Control Equation
Variables
If you have the following SELOGIC control equation in an SEL-351 series
relay, convert it as shown below.
In an SEL-400 series relay, use the line shown below.
PSV01 := IN101 OR RB03 AND PLT04 # Freeform example
In the example above, first convert the + and * operators in the expression to
the OR and AND operators. In the freeform example, use a protection
SEL
OGIC control equation variable for the result. In the protection group set-
tings example, use the input of a timer, as shown in Table 13.21.
Example 13.24 Converting SEL-351 Series Relay SELOGIC Control Equation Timers
If you have the following SELOGIC control equation timer in an SEL-351
series relay, convert it as shown below.
In an SEL-400 series relay, use the format shown below.
#
# Freeform programming conversion of timer
#
PCT01PU := 5.25 # Pickup of 5.25 cycles
PCT01DO := 3.5 # Dropout of 3.5 cycles
PCT01IN := IN101 # Use the timer to monitor IN101
In the output settings, set OUT101 as shown below:
OUT101 := PCT01Q
Example 13.25 Converting SEL-351 Series Relay Latch Bits
If you have the following SELOGIC control equation latch programming in
an SEL-351 series relay, convert it as shown below.
SV1 = IN101
SV1PU = 5.25
SV1DO = 3.50
OUT101 = SV1T
SET1 = RB4
RST1 = RB5
OUT101 = LT1
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