Schweitzer Engineering Laboratories SEL-421-4 - Page 1148

12.6
SEL-400 Series Relays Instruction Manual Date Code 20171006
Settings
Port Settings
After a group change, an automatic message will be sent to any serial port that
has setting AUTO := Y (see Table 12.7).
Active Setting: Nonvolatile State
Power Loss
The active setting group is retained if power to the relay is lost and then restored.
If a particular setting group is active (e.g., setting Group 5) when power is lost,
the same setting group is active when power is restored.
Settings Change
If individual settings are changed for the active setting group or one of the other
setting groups, the active setting group is retained, much like in the preceding
explanation.
If individual settings are changed for a setting group other than the active setting
group, there is no interruption of the active setting group, so the relay is not
momentarily disabled.
If the individual settings change causes a change in one or more SEL
OGIC control
equation settings SS1 through SS6, the active setting group can be changed, sub-
ject to the newly enabled SS1 through SS6 settings.
Port Settings
Table 12.4 Port Settings Categories
Settings Reference
Protocol Selection See Table 12.5.
Communications Settings See Table 12.6.
SEL Protocol Settings See Table 12.7.
Fast Message Read Data Access See Table 12.8.
IP Configuration See Table 12.9.
FTP Configuration See Table 12.10.
HTTP Server Configuration See Table 12.11.
Telnet Configuration See Table 12.12.
IEC 61850 Configuration See Table 12.13.
SV Receiver Configuration See Table 12.14
SV Transmitter Configuration See Table 12.15
DNP3 Protocol Settings See Table 12.16.
DNP3 Protocol LAN/WAN Settings See Table 12.17.
Phasor Measurement Configuration See Table 12.18.
M
IRRORED BITS Protocol Settings See Table 12.19.
RTD Protocol Settings See Table 12.20.
PMU Protocol Settings See Table 12.21.
Simple Network Time Protocol (SNTP) Selection See Table 12.22.