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3. Operation and Configuration
3.1 LED Indicator Functions
The EAFR-110 contains 20 indication LEDs. A user defin-
able text list can be slid in under the label pocket for identi-
fying each LED function (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 a 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
will go into the protection mode in 50 ms even while the
LED test is being performed. During normal operation, only
the blue power LED is on.
All current measuring channels (IL1, IL2, AND IL3, and
Io) have indication LEDs. When any channel exceeds the
set threshold value, the indication LED is turned on until a
manual reset is performed. In an open CT condition, the
corresponding current channel indicator and the ERROR
LED will be blinking.
The sensor LEDs are off during the inactive condition. If the
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.
EAFR-110 Current and Arc Light Sensor Relay User Manual MN026007EN February 2016 www.eaton.com
3. Operation and Configuration
In the case of loose sensor wire or configuration mismatch
(new sensor attached without running auto-configuration
system setup, see Section 3.3.1) situation, the correspond-
ing LED for that sensor will start flashing and the ERROR
LED will activate.
The Binary I/O LEDs are indicating the I/O-line status. If any
of the lines become active for more than 1.5 ms, the corre-
sponding LED will illuminate (latch).
In a trip situation, the corresponding trip LED will illumi-
nate. Trip outputs are controlled by dipswitch settings (see
Section 3.6).
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 identifying the trip information in case the auxiliary
power is lost. When re-powering the relay after power sup-
ply loss, the actual LED status can be visualized from the
front of the relay.
3.2 LED Operation Quick Guide
Table 1 describes the function of each indicator LED on the
front of the EAFR-110 relay. Note that the use of sensor
channels differs between EAFR-110P and EAFR-110F ver-
sions. Sensor channels S4 and S5 are not in use in EAFR-
110F version.
5
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