FUNCTION CHARACTERISTICS
29
NA011 - 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)
• One red LED 4, no latched, tagged for binary input state visualization 52b (CB position)
• One red LED 5, no latched, tagged for binary input state visualization 79
.
[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>>
79 State
CB OPEN
CB CLOSED
Note 1
The slow flashing (4 Hz) of LED 5 shows the status of reclosing is in progress, while the fast flashing (10 Hz) shows the status of failed reclosure
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