Non-Volatile Latches - GE G60 Instruction Manual

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 HMI action resets the latch. The settings, logic, and element operation are 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 5–35: 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
G60 Generator Management Relay
5.4.8 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
SETTING
SETTING
LATCH 1 FUNCTION:
LATCH 1 TYPE:
Disabled=0
Enabled=1 RUN
SETTING
LATCH 1 SET:
Off=0 SET
SETTING
LATCH 1 SET:
Off=0 RESET
5.4 FLEXLOGIC™
5
FLEXLOGIC OPERANDS
LATCH 1 ON
LATCH 1 OFF
842005A1.CDR
5-69