Direct Inputs And Outputs - GE L30 Instruction Manual

CHAPTER 5: SETTINGS
5.9.5.2 Graphical front panel
SETTINGS  INPUTS/OUTPUTS  RESETTING
 RESETTING

Some events can be programmed to latch the front panel LED event indicators, target messages, and/or graphical front
panel annunciator windows. Once set, the latching mechanism holds the latched indicators, messages, or windows in the
set state after the initiating condition has cleared until a
FlexLogic latches) to the reset state where the initiating condition has cleared. The
front panel RESET button, a remote device via a communications channel, or any selected operand. The Modbus execute
function 05h with operation code 1 command is also available to perform the same function as the front panel RESET key.
— The three sources of
RESET OPERAND
source of a command also activates its individual operand
RESET
identify the source of the command. Each of these three operands generates an event in the event record when activated.
The setting here selects the operand that activates the
RESET OPERAND
— Used to select a FlexLogic operand that when activated acknowledges/resets all annunciator
RESET ANNUNCIATOR
windows on the graphical front panel. The other methods to acknowledge/reset annunciator windows include:
• On the displayed page, press the RESET pushbutton with none of the annunciator windows selected to acknowledge/
reset all annunciator windows on that page
• To acknowledge/reset a specific annunciator window, use the Up, Down, Left and Right pushbuttons to select the
window, and press the RESET or ENTER pushbutton
• All annunciator windows can be reset remotely by programming a Virtual Input (for example Virtual Input 1) as the
input to the
RESET ANNUNCIATOR
(or function 10h with address 400h) is used to set the state of Virtual Input 1.
For the setting, the
RESET ANNUNCIATOR
command, operand source and manual source. Each individual source of a
its individual operand
RESET OP (OPRD)
operands generates an event in the event record when activated. The setting here selects the operand that activates the
operand. The RESET pushbutton on the front panel or the reset command from the software
RESET ANCTR OP (OPRD)
activates the
RESET ANCTR OP (MNUL)

5.9.6 Direct inputs and outputs

5.9.6.1 Overview
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. Note that failures of communications
channel 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 sent over both channels
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.
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
RESET OPERAND:

Off
RESET ANNUNCIATOR:

Off
command is received to return these latches (not including
RESET
commands each activates the
RESET
setting. Then the Modbus execute function 05h with operation code 1000h command
FlexLogic operand is activated by the two sources of
RESET ANCTR OP
or to identify the source of the command. Each of these two
RESET ANCTR OP (MNUL)
operand.
Range: FlexLogic operand
Range: FlexLogic operand
command can be sent from the
RESET
FlexLogic operand. Each individual
RESET OP
,
RESET OP (PUSHBUTTON) RESET OP (COMMS)
operand.
RESET OP (OPERAND)
RESET ANNUNCIATOR
INPUTS/OUTPUTS
, or to
RESET OP (OPERAND)
RESET
command also activates
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