Non-Volatile Latches - GE N60 Instruction Manual

Network stability and synchrophasor measurement system ur series
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5.5 FLEXLOGIC

PATH: SETTINGS
FLEXLOGIC
 LATCH 1
5
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
Dominant
OFF
ON
OFF
Set
ON
Dominant
ON
OFF
OFF
Figure 5–55: NON-VOLATILE LATCH OPERATION TABLE (N = 1 to 16) AND LOGIC
5-158


NON-VOLATILE LATCHES

LATCH 1
FUNCTION: Disabled
LATCH 1 TYPE:
MESSAGE
Reset Dominant
LATCH 1 SET:
MESSAGE
Off
LATCH 1 RESET:
MESSAGE
Off
LATCH 1
MESSAGE
TARGET: Self-reset
LATCH 1
MESSAGE
EVENTS: Disabled
LATCH N
LATCH N
ON
OFF
OFF
ON
OFF
OFF
Previous
Previous
State
State
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
Previous
Previous
State
State
ON
OFF
ON
N60 Network Stability and Synchrophasor Measurement 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 SETTINGS
GE Multilin

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