Non-Volatile Latches - GE G60 Instruction Manual

FLEXLOGIC

5.6.8 Non-volatile latches

SETTINGS  FLEXLOGIC  NON-VOLATILE LATCHES  LATCH 1(16)
 LATCH 1

The non-volatile latches provide a permanent logical flag that is stored safely and do not reset upon restart after the relay
is powered down. Typical applications include sustaining operator commands or permanently blocking relay functions,
such as Autorecloser, until a deliberate interface action resets the latch.
— This setting characterizes Latch 1 to be Set- or Reset-dominant.
LATCH 1 TYPE
— If asserted, the specified FlexLogic operands 'sets' Latch 1.
LATCH 1 SET
5
— If asserted, the specified FlexLogic operand 'resets' Latch 1.
LATCH 1 RESET
5-214
LATCH 1

FUNCTION: Disabled
LATCH 1 ID:

NV Latch 1
LATCH 1 TYPE:

Reset Dominant
LATCH 1 SET:

Off
LATCH 1 RESET:

Off
LATCH 1

TARGET: Self-reset
LATCH 1

EVENTS: Disabled
Figure 5-110: Non-volatile latch operation table (N = 1 to 16) and logic
Latch n type Latch n
set
Reset ON
Dominant
OFF
ON
OFF
Set ON
Dominant
ON
OFF
OFF
Range: Disabled, Enabled
Range: up to 20 alphanumeric characters
Range: Reset Dominant, Set Dominant
Range: FlexLogic operand
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
Latch n Latch n Latch n
reset 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
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS