Direct Inputs And Outputs - GE L30 Instruction Manual

5.8 INPUTS AND OUTPUTS
b) USERST BIT PAIRS

PATH: SETTINGS INPUTS/OUTPUTS
 REMOTE OUTPUTS
 UserSt- 1 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, see the Remote Inputs/Outputs Overview in the Remote
Devices section.
NOTE
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.
5
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
NOTE
ORed with FlexLogic or mapped separately.
b) DIRECT INPUTS

PATH: SETTINGS INPUTS/OUTPUTS
 DIRECT INPUTS

5-254

REMOTE OUTPUTS UserSt BIT PAIRS
UserSt- 1 OPERAND:
Off
UserSt- 1 EVENTS:
MESSAGE
Disabled
 
DIRECT DIRECT INPUTS
DIRECT INPUT 1-1
DEFAULT: Off
DIRECT INPUT 1-2
MESSAGE
DEFAULT: Off
DIRECT INPUT 1-8
MESSAGE
DEFAULT: Off
DIRECT INPUT 2-1
MESSAGE
DEFAULT: Off
DIRECT INPUT 2-2
MESSAGE
DEFAULT: Off
DIRECT INPUT 2-8
MESSAGE
DEFAULT: Off
L30 Line Current Differential System

REMOTE OUTPUTS UserSt- 1(32) BIT PAIR
Range: FlexLogic operand
Range: Disabled, Enabled

5.8.9 DIRECT INPUTS AND OUTPUTS

Range: Off, On
Range: Off, On
↓
Range: Off, On
Range: Off, On
Range: Off, On
↓
Range: Off, On
5 SETTINGS
GE Multilin