FUNCTION CHARACTERISTICS
25
NA016 - Manual - 05 - 2022
LED indicators
Eight LEDs are available.
• One green LED “ON”: if turned on it means that the device is properly working, if flashing the inter-
nal self-test function has detected an anomaly.
• One yellow LED “START” tagged for START of one or more protective elements. (I>, I>>, I>>>, IE>,
IE>>)
• One red LED “TRIP” tagged for TRIP of one or more protective elements (I>, I>>, I>>>, IE>, IE>>).
• One red LED 1, latched, tagged for TRIP of one or more protective elements I>, I>>, I>>>
• One red LED 2, latched, tagged for TRIP of one or more protective elements IE>, IE>>
• One red LED 3, no latched, tagged for binary input state visualization 52a (CB position)
[1]
• One red LED 4, no latched, tagged for binary input state visualization 52b (CB position)
[1]
• One red LED 5, no latched, tagged for binary input state visualization TCS.
[1]
FUNCTIONS
LED
START TRIP 1 2 3 4 5
Start I>
Trip I>
Start I>>
Trip I>>
Start I>>>
Trip I>>>
Start IE>
Trip IE>
Start IE>>
Trip IE>>
Trip TCS
CB OPEN
CB CLOSED
Note 1 The LEDs 3, 4 (CB position) and 5 (TCS) are enabled only when the logger is enabled
Start
79 (79 State)
CB CLOSED (52b)
CB OPEN (52a)
50-51 (I>, I>>, I>>> elements)
50N-51N (IE>, IE>> elements)
Trip
Open CB
Close CB
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