Operation and configuration

LED indicator functions

The EAFR-101C contains 16 indication LEDs .  A user definable text

pocket can be slid in under the label for identifying each LED func

tion (except POWER and ERROR LEDs) .  LEDs are located at the

front plate of the relay for clear viewing without a need for opening

doors .

During power up, the relay performs an LED test .  All LEDs are

turned on for two seconds and then off .  Only the blue POWER LED

will remain on .  After powered up, the relay goes into protection

mode in 50 ms even while the LED test is being performed .

During normal operation, the blue power LED is ON, as are any CB

open/close status LED’s for connected CB’s .

The sensor LEDs are off during the inactive condition .  If  a point arc

sensor is activated, the corresponding sensor channel LED will turn

on if the activation is longer than 1 .5 ms .  The sensor LED activation

function is latched (steady light) .  To clear the LED, the “SET” button

should be pressed .

In case of a loose sensor wire and binary input wires or configura

tion mismatch (new sensor attached without running auto-configu

ration system setup (see Section 3 .3 .1) situation, the corresponding

LED for that sensor will start flashing and the ERROR LED will

activate .

The Binary I/O LEDs indicate the I/O-line status .  If any of the lines

become active for more than 1 .5 ms, the corresponding LED will

turn on (latch) .

In a trip situation, the corresponding trip LED will turn on .  Trip

outputs are controlled by the dipswitch settings (see Section  3 .5) .

All activation and trip indication LEDs are latched, even if the

dipswitch setting is in the non-latched mode .  They have to be

cleared by pushing the “SET” button .

LED indications are stored in non-volatile EPROM memory for iden

tifying the trip information in case the auxiliary power is lost .  When

re-powering the relay after power supply loss, the actual LED status

can be visualized from the front of the relay