GE UR Series L90, Instruction Manual, Page: 481 / 846

GE Multilin L90 Line Current Differential System 5-343
5 SETTINGS 5.8 INPUTS/OUTPUTS
5
5.8.8 REMOTE OUTPUTS
a) DNA BIT PAIRS
PATH: SETTINGS

INPUTS/OUTPUTS

REMOTE OUTPUTS DNA BIT PAIRS

REMOTE OUPUTS DNA- 1(32) BIT PAIR
Remote outputs (1 to 32) are FlexLogic operands inserted into GSSE/GOOSE messages that are transmitted to remote
devices on a LAN. Each digital point in the message must be programmed to carry the state of a specific FlexLogic oper-
and. The above operand setting represents a specific DNA function (as shown in the following table) to be transmitted.
b) USERST BIT PAIRS
PATH: SETTINGS

INPUTS/OUTPUTS

REMOTE OUTPUTS UserSt BIT PAIRS

REMOTE OUTPUTS UserSt- 1(32) BIT PAIR
Remote outputs 1 to 32 originate as GSSE/GOOSE messages to be transmitted to remote devices. Each digital point in the
message must be programmed to carry the state of a specific FlexLogic operand. The setting above is used to select the
operand which represents a specific UserSt function (as selected by the user) to be transmitted.
For more information on GSSE/GOOSE messaging, refer to Remote Inputs/Outputs Overview in the Remote
Devices section.
5.8.9 DIRECT INPUTS/OUTPUTS
a) DESCRIPTION
The relay provides eight direct inputs conveyed on communications channel 1 (numbered 1-1 through 1-8) and eight direct
inputs conveyed on communications channel 2 (on three-terminal systems only, numbered 2-1 through 2-8). The user must
program the remote relay connected to channels 1 and 2 of the local relay by assigning the desired FlexLogic operand to
be sent via the selected communications channel.
This relay allows the user to create distributed protection and control schemes via dedicated communications channels.
Some examples are directional comparison pilot schemes and transfer tripping. It should be noted that failures of communi-
cations channels will affect direct input/output functionality. The 87L function must be enabled to utilize the direct inputs.
Direct input and output FlexLogic operands to be used at the local relay are assigned as follows:
• Direct input/output 1-1 through direct input/output 1-8 for communications channel 1.
• Direct input/output 2-1 through direct input/output 2-8 for communications channel 2 (three-terminal systems only).
On the two-terminal, two channel system (redundant channel), direct outputs 1-1 to 1-8 are send over both chan-
nels simultaneously and are received separately as direct inputs 1-1 to 1-8 at channel 1 and direct inputs 2-1 to 2-8
at channel 2. Therefore, to take advantage of redundancy, the respective operands from channel 1 and 2 can be
ORed with FlexLogic or mapped separately.

REMOTE OUTPUTS

DNA- 1 BIT PAIR
DNA- 1 OPERAND:
Off
Range: FlexLogic operand
MESSAGE
DNA- 1 EVENTS:
Disabled
Range: Disabled, Enabled
Table 5–31: IEC 61850 DNA ASSIGNMENTS
DNA IEC 61850 DEFINITION FLEXLOGIC OPERAND
1 Test IEC 61850 TEST MODE
2 ConfRev IEC 61850 CONF REV

REMOTE OUTPUTS

UserSt- 1 BIT PAIR
UserSt- 1 OPERAND:
Off
Range: FlexLogic operand
MESSAGE
UserSt- 1 EVENTS:
Disabled
Range: Disabled, Enabled
NOTE
NOTE