Automation; Flexible Control Logic And Integration Features; Standard Protocols; Eliminates External Timers - Sel -2414 Manual

Automation

Flexible Control Logic and Integration Features

The SEL-2414 is equipped with as many as four inde-
pendently operated serial ports: one EIA-232 port on the
front, one EIA-232 or EIA-485 port on the rear, one
fiber-optic port, and one EIA-232 or EIA-485 port option
card. The device does not require special communica-
tions software. Use any system that emulates a standard
terminal system for engineering access to the device.
Establish communication by connecting computers,
modems, protocol converters, printers, an SEL commu-
nications processor, SCADA serial port, and an RTU for
local or remote communication. Apply an SEL commu-
nications processor as the hub of a star network, with
point-to-point fiber or copper connection between the
hub and the SEL-2414. Included communications proto-
cols are listed below.

Standard Protocols

Modbus RTU
SEL ASCII
SEL Compressed ASCII
SEL Fast Meter
SEL Fast Operate
SEL Fast SER
SEL Fast Message
SEL M B
IRRORED ITS
SEL-2414 logic improves integration in the following
ways.
Replaces Traditional Panel Control Switches
Eliminate traditional panel control switches with opera-
tor control pushbuttons or the 32 local bits, available
through the menu system. Program the four conveniently
sized operator pushbuttons to control fan banks and fan
lockout. Set, clear, or pulse local bits with the front-panel
pushbuttons and display. Program the local bits into your
control scheme with SEL
OGIC
local bits to perform functions such as breaker trip/close.
Replaces Traditional Indicating Panel Lights
Replace traditional indicating panel lights with 32 pro-
grammable displays. Define custom messages (e.g., Fan
On, Fan Off) to report transformer or device conditions
on the front-panel display. Use advanced SEL
trol equations to control which messages the device dis-
plays. Figure 8 shows an example.
Schweitzer Engineering Laboratories, Inc.
control equations. Use the
con-
OGIC
Replaces Traditional Temperature Gauges
Replace traditional temperature gauges that show the
temperature, and the maximum and minimum tempera-
ture since last reset. The SEL-2414 Max/Min metering
records and time stamps the maximum and minimum
temperatures and transformer thermal model quantities.
Replaces Traditional Latching Relays
Replace as many as 32 traditional latching relays for
such functions as "remote control enable" with latch bits.
Program latch set and latch reset conditions with
SEL control equations. Set or reset the nonvolatile
OGIC
latch bits using optoisolated inputs, remote bits, local
bits, or any programmable logic condition. The latch bits
retain their state when the device loses power.

Eliminates External Timers

Eliminate external timers for custom protection or con-
trol schemes with 32 general purpose SEL
equation timers. Each timer has independent time-delay
pickup and dropout settings. Program each timer input
with any desired element (e.g., time qualify a current ele-
ment). Assign the timer output to control scheme logic.
Eliminates RTU-to-Device Wiring
Eliminate RTU-to-Device wiring with 32 remote bits.
Set, clear, or pulse remote bits using serial port com-
mands. Program the remote bits into your control scheme
with SEL control equations. Use remote bits for
OGIC
SCADA-type control operations such as trip and close.
Define custom messages to report
station or device conditions with
user-configured display points.
Figure 8 Define Custom Messages to Report Station or
Device Conditions
9
control
OGIC
FAN RUNNING
SWITCH OPEN
CONTROL ENABLE
XFMR OVERLOAD
SEL-2414 Data Sheet