GE 850 - Page 472

7–52 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
LOSS OF COMMUNICATIONS CHAPTER 7: MONITORING
Figure 7-29: Loss of Communications logic diagram
894175A1.cdr
RUN
SETPOINTS
BLOCK
:
Off = 0
Comms Status
Inactive
A
N
D
Operate Output Relay 1 (TRIP)
LED: TRIP
O
R
O
R
A
N
D
A
N
D
SETPOINT
FUNCTION:
Disabled = 0
Trip
Alarm
Latched Alarm
PICKUP DELAY
LED : ALARM
RESET
Command
A
N
D
S
R
LATCH
LED: PICKUP
SETPOINTS
Do Not Operate, Operate
OUTPUT RELAYS
Configurable
Loss of Comms PKP
FLEXLOGIC OPERANDS
Loss of Comms OP
FLEXLOGIC OPERANDS
Set
Dominant