Schweitzer Engineering Laboratories SEL-787 - Table 4.40 Data Reset Setting; Table 4.41 Setting Change Disable Setting; Port Settings (SET P Command)

4.92
SEL-787 Relay Instruction Manual Date Code 20081022
Protection and Logic Functions
Port Settings (SET P Command)
Data Reset
The RSTTRGT setting resets the trip output and front-panel TRIP LED,
provided there is no trip condition present. See Figure 4.44 for more details.
The RSTENRGY and RSTMXMN settings reset the Energy and Max/Min
Metering values respectively. You should assign a contact input (for example,
RSTTRGT := IN401) to each of these settings if you want remote reset. The
RSTDEM and RSTPKDEM settings reset demand and peak-demand. See
Figure 4.41 for the demand current logic diagram.
Access Control
The DSABLSET setting defines conditions for disabling all setting changes
from the front-panel interface. To disable setting changes from the front-panel
interface, assign, for example, a contact input (e.g., DSABLSET := IN402) to
the DSABLSET setting. When Relay Word bit DSABLSET asserts, you can
view the device settings from the front-panel interface, but you can only
change settings using serial port commands. Table 4.41 shows the settings
prompt, setting range, and factory default settings.
Port Settings (SET P Command)
The SEL-787 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 a 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 4.42 through
Table 4.46 for the serial port settings, also see appropriate Appendix for
additional information on the protocol (DNP, MODBUS, IEC-61850,
DeviceNet, Synchrophasors, and M
IRRORED BIT) of interest.
Table 4.40 Data Reset Setting
Setting Prompt Setting Range
Setting Name :=
Facto ry Defa ul t
RESET TARGETS SELOGIC RSTTRGT := 0
RESET ENERGY SEL
OGIC RSTENRGY := 0
RESET MAX/MIN SEL
OGIC RSTMXMN := 0
RESET DEMAND SEL
OGIC RSTDEM := 0
RESET PK DEMAND SEL
OGIC RSTPKDEM := 0
Table 4.41 Setting Change Disable Setting
Setting Prompt Setting Range
Setting Name :=
Facto ry Defa ul t
DISABLE SETTINGS SELOGIC DSABLSET := 0
NOTE: DISABLSET does not disable
the setting changes from the serial
ports.