Sel 751A - Port Settings (SET P Command); Table 4.51 Time Synchronization Source Setting; Table 4.52 Front-Panel Serial Port Settings; Table 4.53 Ethernet Port Settings

4.108
SEL-751A Relay Instruction Manual Date Code 20100129
Protection and Logic Functions
Port Settings (SET P Command)
Port Settings (SET P Command)
The SEL-751A provides settings that allow you to configure the parameters
for the communications ports. See Section 2: Installation for a detailed
description of port connections. On the base unit: Port F (front panel) is an
EIA-232 port; Port 1 is an optional Ethernet port(s); Port 2 is an optional fiber-
optic serial port; and Port 3 (rear) is optionally an EIA-232 or EIA-485 port.
On the optional communications card, you can select Port 4 as either EIA-485
or EIA-232 (not both) with the COMMINF setting. See Table 4.52 through
Table 4.56 for the port settings, also see appropriate Appendix for additional
information on the protocol (DNP, MODBUS, IEC-61850, DeviceNet,
Synchrophasors, and M
IRRORED BITS) of interest.
PORT F
PORT 1
Table 4.51 Time Synchronization Source Setting
Setting Prompt Setting Range
Setting Name :=
Factory Defau lt
IRIG TIME SOURCE IRIG1, IRIG2 TIME_SRC := IRIG1
Table 4.52 Front-Panel Serial Port Settings
Setting Prompt Setting Range
Setting Name :=
Factory Defau lt
PROTOCOL SEL, MOD, EVMSG,
PMU
PROTO := SEL
SPEED 300–38400 bps SPEED := 9600
DATA BITS 7, 8 bits BITS := 8
PARITY O, E, N PARITY := N
STOP BITS 1, 2 bits STOP := 1
PORT TIME-OUT 0–30 min T_OUT := 5
SEND AUTOMESSAGE Y, N AUTO := N
HDWR HANDSHAKING Y, N RTSCTS := N
MODBUS SLAVE ID 1–247 SLAVEID := 1
Table 4.53 Ethernet Port Settings (Sheet 1 of 2)
Setting Prompt Setting Range
Setting Name :=
Factory Defau lt
IP ADDRESS zzz.yyy.xxx.www IPADDR := 192.168.1.2
SUBNET MASK 15 characters SUBNETM := 255.255.255.0
DEFAULT ROUTER 15 characters DEFRTR := 192.168.1.1
Enable TCP Keep-Alive (Y, N) ETCPKA := Y
TCP Keep-Alive Idle Range 1–20 sec KAIDLE := 10
TCP Keep-Alive Interval Range 1–20 sec KAINTV := 1
TCP Keep-Alive Count Range 1–20 KACNT := 6
IMPORTANT: Upon relay initial
power up or Port 1 setting changes or
Logic setting changes, the user may
have to wait up to two minutes before
an additional setting change can
occur. Note that the relay is functional
with protection enabled, as soon as
the ENABLED LED comes ON (about 5—10
seconds from power up).