5–72 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
SYSTEM CHAPTER 5: DEVICE, SYSTEM, INPUT AND OUTPUT SETPOINTS
Figure 5-16: Breaker State Detection logic diagram
SETPOINT
52a CONTACT
FlexLogic operand =1, Off = 0
SETPOINT
52b CONTACT
FlexLogic operand =1, Off = 0
FlexLogic operand
(BKR 52a state)
FlexLogic operand
(BKR 52b status)
AND AND
XOR
30 ms
S
R
PB LED: BREAKER CLOSED
PB LED: BREAKER OPENED
LED: ALARM
LATCH
OR
AND
OR
OR
RESET
(command)
ANDAND
FLEXLOGIC OPERANDS
BKR 1 Closed
FLEXLOGIC OPERANDS
BKR 1 Opened
FLEXLOGIC OPERANDS
BKR 1 Unkwn State
OR
At least one contact programmed
(to Trip and Close output relays)
TARGET MESSAGE
BKR 1 NOT CONFIGURED
FLEXLOGIC OPERANDS
BKR 1 Configured
892740A2.cdr
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