GE 850 - Page 237

CHAPTER 5: DEVICE, SYSTEM, INPUT AND OUTPUT SETPOINTS SYSTEM
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 5–75
Figure 5-17: Disconnect Switch State Detection logic diagram
SETPOINT
89a CONTACT FlexLogic operand =1, Off = 0
SETPOINT
89b CONTACT FlexLogic operand =1, Off = 0
FlexLogic operand
(SW1 89a state)
FlexLogic operand
(SW1 89b state)
AND AND
XOR
PKP
S R
LED: ALARM
LATCH
OR
AND
OR
OR
ANDAND
FLEXLOGIC OPERANDS
SW1 CLOSED
FLEXLOGIC OPERANDS
SW1 OPENED
FLEXLOGIC OPERANDS
SW1 DISCREPANCY
OR
FLEXLOGIC OPERANDS
SW1 NOT CONFIGURED
SETPOINT
ALARM DELAY
t
Positive
Edge
SETPOINT
RESET ALARM FlexLogic operand, Off = 0
FLEXLOGIC OPERANDS
SW1 INTERMITTENT
FLEXLOGIC OPERAND
89a CONTACT
FLEXLOGIC OPERAND
89b CONTACT
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