Table of Contents
Advertisement
5 SETTINGS
PATH: SETTINGS
FLEXLOGIC
LATCH 1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The non-volatile latches provide a permanent logical flag that is stored safely and will not reset upon reboot after the relay
is powered down. Typical applications include sustaining operator commands or permanently block relay functions, such as
Autorecloser, until a deliberate interface action resets the latch. The settings element operation is described below:
•
LATCH 1 TYPE: This setting characterizes Latch 1 to be Set- or Reset-dominant.
•
LATCH 1 SET: If asserted, the specified FlexLogic operands 'sets' Latch 1.
•
LATCH 1 RESET: If asserted, the specified FlexLogic operand 'resets' Latch 1.
LATCH N
LATCH N
LATCH N
TYPE
SET
RESET
Reset
ON
OFF
Dominant
OFF
OFF
ON
ON
OFF
ON
Set
ON
OFF
Dominant
ON
ON
OFF
OFF
OFF
ON
Figure 5–48: NON-VOLATILE LATCH OPERATION TABLE (N = 1 to 16) AND LOGIC
GE Multilin
NON-VOLATILE LATCHES
LATCH 1
FUNCTION: Disabled
LATCH 1 TYPE:
Reset Dominant
LATCH 1 SET:
Off
LATCH 1 RESET:
Off
LATCH 1
TARGET: Self-reset
LATCH 1
EVENTS: Disabled
LATCH N
LATCH N
ON
OFF
ON
OFF
Previous
Previous
State
State
OFF
ON
OFF
ON
ON
OFF
ON
OFF
Previous
Previous
State
State
OFF
ON
D30 Line Distance Protection System
5.5.8 NON-VOLATILE LATCHES
LATCH 1(16)
Range: Disabled, Enabled
Range: Reset Dominant, Set Dominant
Range: FlexLogic operand
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5.5 FLEXLOGIC
5
5-121
Advertisement
Table of Contents
