Sel 411L - Page 860

P.14.36
SEL-411L Relay Protection Manual Date Code 20151029
SELOGIC Control Equation Programming
SEL-311 and SEL-351 Series Users
In the SEL-300 series relays, SELOGIC control equation variables and timers
are connected. Each SEL
OGIC control equation variable is the input to a timer.
In the SEL-400 series, timers and SEL
OGIC control equation variables are
independent.
The SEL
OGIC control equation Boolean operators in the SEL-400 series are
different from those used in SEL-300 series relays. For example, if you wish
to convert programming from an SEL-300 series relay for the SEL-400 series,
you must convert the operators. Example 14.24 and Example 14.25
demonstrate conversion of several settings to the SEL-400 series setting.
EXAMPLE 14.24 Converting SEL-300 Series Relay SELOGIC
Control Equation Variables
If you have the following SEL
OGIC control equation in an SEL-300
series relay, convert it as shown below.
SV1 = IN201 + RB3 * LT4
In the SEL-400 series, use the line shown below.
PSV01 := IN201 OR RB03 AND PLT04 # Free-form example
In the example above, first convert the + and * operators in the
expression to the OR and AND operators. In the free-form example,
use a protection SEL
OGIC control equation variable for the result. In
the protection group settings example, use the input of a timer, as
shown in Table 14.25.
EXAMPLE 14.25 Converting SEL-300 Series Relay SELOGIC
Control Equation Timers
If you have the following SEL
OGIC control equation timer in an
SEL-300 series relay, convert it as shown below.
SV1 = IN201
SV1PU = 5.25
SV1DO = 3.5
OUT101 = SV1T
In the SEL-400 series, use the format shown below.
#
# Free-form programming conversion of timer
#
PCT01PU := 5.25 # Pickup of 5.25 cycles
PCT01DO := 3.5 # Dropout of 3.5 cycles
PCT01IN := IN201 # Use the timer to monitor IN201
In the output settings, set OUT201 as shown below:
OUT201 := PCT01Q
EXAMPLE 14.26 Converting SEL-300 Series Relay Latch Bits
If you have the following SEL
OGIC control equation latch programming
in an SEL-311 series relay, convert it as shown below.
SET1 = RB4
RST1 = RB5
OUT201 = LT1