Schweitzer Engineering Laboratories SEL-751 - Figure 7.5 IRIG-B Input Via EIA-232 Port 3 (SEL Communications Processor as Source); Figure 7.6 IRIG-B Input Via EIA-232 Port 3 (SEL-2401;2404;2407 Time Source); Figure 7.7 IRIG-B Input Via Fiber-Optic EIA-232 Port 2 (SEL-2030;2032 Time Source)

7.7
Date Code 20170927 Instruction Manual SEL-751 Relay
Communications
Communications Interfaces
You cannot use B01–B02 input or Port 2 if you use Port 3.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG1.
Figure 7.5 IRIG-B Input Via EIA-232 Port 3 (SEL Communications
Processor as Source)
You cannot use B01–B02 input or Port 2 if you use Port 3.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG1.
Figure 7.6 IRIG-B Input Via EIA-232 Port 3 (SEL-2401/2404/2407 Time
Source)
Option 3: Port 2 (Fiber-Optic Serial Port)
You can use the optional fiber-optic serial Port 2 to bring IRIG-B input to the
relay as shown in Figure 7.7 and Figure 7.8.
You cannot use B01–B02 input or Port 3 input if you use Port 2 for IRIG-B input.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG2.
Figure 7.7 IRIG-B Input Via Fiber-Optic EIA-232 Port 2 (SEL-2030/2032
Time Source)
SEL-2401
SEL-2404
or
SEL-2407
DB9
Port 3
EIA-232 + IRIG
(or fiber-optic equivalent)
SEL Cable
C273A
(Figure 7.6)
SEL-751
DB9
SEL-2030
or
SEL-2032
SEL-2401
SEL-2404
or
SEL-2407
SEL-751
DB9
BNC
IED
(Any EIA-232
serial application)
SEL Cable
C292A
SEL Cable
C953
BNC-T Connector (3-way)
SEL Part #240-1802
DB9
IRIG-B
Port 3
SEL-2812MT
SEL-2030
SEL-2032
EIA-232 Port
with IRIG
DB9
Fiber-Optic Cables
SEL C805 or SEL C807
Port 2
Set switch to EIA-232 for IRIG-B
from SEL-2030 or SEL-2032
ST Connectors
SEL-751