Schweitzer Engineering Laboratories, Inc.
SEL-487B Data Sheet
13
based on the connected topology. This limits the number
of settings and makes converting an existing system to
TiDL easy. Figure 23 shows a sample TiDL topology.
The SEL-487B Instruction Manual shows all supported
topologies.
Figure 23
Sample Topology
Flexible Control Logic and Integration
Features
Use the SEL-487B control logic to replace the
following:
➤
Traditional panel control switches
➤
RTU-to-relay wiring
➤
Traditional latching relays
➤
Traditional indicating panel lights
Eliminate traditional panel control switches with 32 local
control points. Set, clear, or pulse local control points
with the front-panel pushbuttons and display. Program
the local control points to implement your control
scheme via SEL
OGIC
control equations. Use the same
local control points for functions such as taking a
terminal out of service for testing.
Eliminate RTU-to-relay wiring with 96 remote control
points. Set, clear, or pulse remote control points via serial
port commands. Incorporate the remote control points
into your control scheme via SEL
OGIC
control equations.
Use remote control points for SCADA-type control
operations (e.g., trip, settings group selection).
Replace traditional latching relays for such functions as
remote control enable with 32 latching control points.
Program latch set and latch reset conditions with
SEL
OGIC
control equations. Set or reset the latch control
points via control inputs, remote control points, local
control points, or any programmable logic condition. The
relay retains the states of the latch control points after
powering up following a power interruption.
Replace traditional indicating panel lights and switches
with either of these HMIs:
➤
Standard HMI: 16 latching target LEDs and 8 pro-
grammable pushbuttons with LEDs.
➤
Expanded HMI option: 24 tricolor latching target
LEDs and 12 programmable pushbuttons.
Define custom messages to report analog and Boolean
power system or relay conditions on the large format
LCD. Control displayed messages via SEL
OGIC
control
equations by driving the LCD display via any logic point
Port
6A
6B
6C
6D
6E
6F
6G
Analogs
I01, I02, I03,V01, V02, V03
I04, I05, I06
I07, I08, I09
I10, I11, I12 (optional)
I13, I14, I15 (optional)
I16, I17, I18 (optional)
I19, I20, I21 (optional)
I01, I02, I03
V0,
V1,
V2
Feeder 1
I04, I05, I06
Feeder 2
I07, I08, I09
Feeder 3
I10, I11, I12
Feeder 4
SEL Axion
SEL Axion
SEL Axion
SEL Axion
I13, I14, I15
Line 1
I16, I17, I18
Line 2
I19, I20, I21
Line 3
SEL Axion
SEL Axion
SEL Axion
SEL Relay
Control House
Substation Yard
