GE T35 UR Series, Instruction Manual

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5-128 T35 Transformer Protection System GE Multilin
5.5 FLEXLOGIC 5 SETTINGS
5
5.5.7 NON-VOLATILE LATCHES
PATH: SETTINGS

FLEXLOGIC

NON-VOLATILE LATCHES

LATCH 1(16)
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.
Figure 5–44: NON-VOLATILE LATCH OPERATION TABLE (N = 1 to 16) AND LOGIC

LATCH 1

LATCH 1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
LATCH 1 TYPE:
Reset Dominant
Range: Reset Dominant, Set Dominant
MESSAGE
LATCH 1 SET:
Off
Range: FlexLogic operand
MESSAGE
LATCH 1 RESET:
Off
Range: FlexLogic operand
MESSAGE
LATCH 1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
LATCH 1
EVENTS: Disabled
Range: Disabled, Enabled
842005A3.CDR
LATCH 1 FUNCTION: LATCH 1 TYPE:
LATCH 1 SET:
LATCH 1 RESET:
RUN
SET
RESET
SETTING
SETTING
SETTING
SETTING
FLEXLOGIC OPERANDS
Off=0
Off=0
Enabled=1
LATCH 1 ON
LATCH 1 OFF
LATCH N
TYPE
LATCH N
SET
LATCH N
RESET
LATCH N
ON
LATCH N
OFF
Reset
Dominant
ON OFF ON OFF
OFF OFF Previous
State
Previous
State
ON ON OFF ON
OFF ON OFF ON
Set
Dominant
ON OFF ON OFF
ON ON ON OFF
OFF OFF Previous
State
Previous
State
OFF ON OFF ON