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Remote Inputs - GE UR Series Instruction Manual

Line differential relay.
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5.7 INPUTS / OUTPUTS
The L90 provides an additional method of sharing digital point state information among different relays: Direct messages.
Direct messages are only used between UR relays inter-connected via dedicated type 7X communications modules, usu-
ally between substations. The digital state data conveyed by direct messages are 'Direct Inputs' and 'Direct Outputs'.
b) DIRECT MESSAGES
Direct messages are only used between UR relays containing the 7X UR communications module (for example, the L90).
These messages are transmitted every one-half of the power frequency cycle (10 ms for 50 Hz and 8.33 ms for 60 Hz) This
facility is of particular value for pilot schemes and transfer tripping. Direct messaging is available on both single channel
and dual channel communications modules. The inputs and outputs on communications channel No. 1 are numbered 1-1
through 1-8, and the inputs and outputs on communications channel No. 2 are numbered 2-1 through 2-8.
Settings associated with Direct Messages are automatically presented in accordance with the number of
channels provided in the communications module in a specific relay.
NOTE
c) LOCAL DEVICES: DEVICE ID FOR TRANSMITTING GOOSE MESSAGES
In a UR relay, the device ID that identifies the originator of the message is programmed in the
ÖØ
ÖØ
INSTALLATION
d) REMOTE DEVICES: DEVICE ID FOR RECEIVING GOOSE MESSAGES
ÖØ
PATH: SETTINGS
INPUTS/OUTPUTS
REMOTE DEVICE
Sixteen Remote Devices, numbered from 1 to 16, can be selected for setting purposes. A receiving relay must be pro-
5
grammed to capture messages from only those originating remote devices of interest. This setting is used to select specific
remote devices by entering (bottom row) the exact identification (ID) assigned to those devices.
ÖØ
PATH: SETTINGS
INPUTS/OUTPUTS
REMOTE INPUT 1
Remote Inputs which create FlexLogic™ operands at the receiving relay, are extracted from GOOSE messages originating
in remote devices. The relay provides 32 Remote Inputs, each of which can be selected from a list consisting of 64 selec-
tions: DNA-1 through DNA-32 and UserSt-1 through UserSt-32. The function of DNA inputs is defined in the UCA2 specifi-
cations and is presented in the UCA2 DNA ASSIGNMENTS table in the Remote Outputs section. The function of UserSt
inputs is defined by the user selection of the FlexLogic™ operand whose state is represented in the GOOSE message. A
user must program a DNA point from the appropriate operand.
Remote Input 1 must be programmed to replicate the logic state of a specific signal from a specific remote device for local
use. This programming is performed via the three settings shown above.
selects the number (1 to 16) of the Remote Device which originates the required signal, as previously
REMOTE IN 1 DEVICE
assigned to the remote device via the setting
selects the specific bits of the GOOSE message required.
the local relay has just completed startup or the remote device sending the point is declared to be non-communicating.
For more information on GOOSE specifications, see REMOTE INPUTS/OUTPUTS OVERVIEW in the
REMOTE DEVICES section.
NOTE
5-156
setting.
RELAY NAME
ÖØ
REMOTE DEVICES
1
REMOTE DEVICE
Remote Device 1
ÖØ

REMOTE INPUTS

REMOTE IN
Remote Device
REMOTE IN
MESSAGE
PAIR: None
REMOTE IN
MESSAGE
STATE: Off
REMOTE IN
MESSAGE
EVENTS: Disabled
REMOTE DEVICE NN ID
L90 Line Differential Relay
Ö
REMOTE DEVICE 1(16)
Range: up to 20 alphanumeric characters
1 ID:
Ö
REMOTE INPUT 1(32)
Range: 1 to 16 inclusive
1 DEVICE:
1
Range: None, DNA-1 to DNA-32, UserSt-1 to UserSt-32
1 BIT
Range: On, Off
1 DEFAULT
Range: Disabled, Enabled
1
(see REMOTE DEVICES section).
REMOTE IN 1 DEFAULT STATE
5 SETTINGS
Ö
SETTINGS
PRODUCT SETUP
5.7.7 REMOTE INPUTS
REMOTE IN 1 BIT PAIR
selects the logic state for this point if
GE Power Management

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L90

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