GE L90 Instruction Manual page 167

5 SETTINGS
The and settings represent the MMS domain name (IEC 61850 logical device) where all IEC/MMS logical
IED NAME LD INST
nodes are located. Valid characters for these values are upper and lowercase letters, numbers, and the underscore (_)
character, and the first character in the string must be a letter. This conforms to the IEC 61850 standard. The
variable string and can be composed of ASCII characters. This string appears within the PhyName of the LPHD node.
The
IEC/MMS TCP PORT NUMBER
setting determines whether or not the "UR" MMS domain will be available. This domain contains a large num-
NON-IEC DATA
ber of UR-series specific data items that are not available in the IEC 61850 logical nodes. This data does not follow the IEC
61850 naming conventions. For communications schemes that strictly follow the IEC 61850 standard, this setting should be
"Disabled".
The feature should be set to "Disabled" when IEC 61850 client/server functionality is not required. IEC
SERVER SCANNING
61850 has two modes of functionality: GOOSE/GSSE inter-device communication and client/server communication. If the
GOOSE/GSSE functionality is required without the IEC 61850 client server feature, then server scanning can be disabled
to increase CPU resources. When server scanning is disabled, there will be not updated to the IEC 61850 logical node sta-
tus values in the L90. Clients will still be able to connect to the server (L90 relay), but most data values will not be updated.
This setting does not affect GOOSE/GSSE operation.
Changes to the
IED NAME
NOTE
The main menu for the IEC 61850 logical node name prefixes is shown below.

PATH: SETTINGS PRODUCT SETUP

IEC 61850 LOGICAL NODE NAME PREFIXES
 IEC 61850 LOGICAL
 NODE NAME PREFIXES
MESSAGE
MESSAGE
The IEC 61850 logical node name prefix settings are used to create name prefixes to uniquely identify each logical node.
For example, the logical node "PTOC1" may have the name prefix "abc". The full logical node name will then be
"abcMMXU1". Valid characters for the logical node name prefixes are upper and lowercase letters, numbers, and the
underscore (_) character, and the first character in the prefix must be a letter. This conforms to the IEC 61850 standard.
Changes to the logical node prefixes will not take effect until the L90 is restarted.
The main menu for the IEC 61850 MMXU deadbands is shown below.

PATH: SETTINGS PRODUCT SETUP
 MMXU DEADBANDS

MESSAGE
MESSAGE
MESSAGE
The MMXU deadband settings represent the deadband values used to determine when the update the MMXU "mag" and
"cVal" values from the associated "instmag" and "instcVal" values. The "mag" and "cVal" values are used for the IEC 61850
buffered and unbuffered reports. These settings correspond to the associated "db" data items in the CF functional con-
GE Multilin
setting allows the user to change the TCP port number for MMS connections. The
setting, setting, and GOOSE dataset will not take effect until the L90 is restarted.
LD INST
 
COMMUNICATIONS
 PIOC LOGICAL NODE
 NAME PREFIXES
 PTOC LOGICAL NODE
 NAME PREFIXES

 PTRC LOGICAL NODE
 NAME PREFIXES
 
COMMUNICATIONS
 MMXU1 DEADBANDS

 MMXU2 DEADBANDS

 MMXU3 DEADBANDS

 MMXU4 DEADBANDS

L90 Line Current Differential System
IEC 61850 PROTOCOL

IEC 61850 PROTOCOL MMXU DEADBANDS
5.2 PRODUCT SETUP
is a
LOCATION
INCLUDE
5
5-37