3
3. Operation and Configuration
EAFR-102 Arc Fiber Loop Sensor Relay User Manual
MN026006EN February 2016 www.eaton.com
3. Operation and Configuration
3.1 LED Indicator Functions
The EAFR-102 contains 11 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).
LED’s are located at the front plate of the unit for clear
viewing without a need for opening doors.
During power up, the unit performs a LED test. All LEDs
are turned on for two seconds and then off. Only the blue
POWER LED will remain on. After power up, the unit will
go into protection mode in 50 ms, even while the LED test
is being performed. During normal operation, only the blue
POWER LED is ON.
The fiber sensor LEDs are off during the inactive condi-
tion. If an arc fiber 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 a case where a fiber sensor connection drops off or a
configuration mismatch situation is detected by system self-
supervision function (new sensor connected without run-
ning auto-configuration system setup [see Section 3.3.1]),
the corresponding LED for that loop sensor will start flash-
ing and the ERROR LED will activate.
The binary I/O LEDs are indicating the I/O-lines 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 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 unit after power sup-
ply loss, the actual LED status can be visualized from the
front of the unit.
3.2 LED Operation Quick Guide
Table 1. LED Operation Quick Guide.
LED
Off
Steady On
Blinking
Action if Abnormal
POWER - Blue
Auxiliary supply
disconnected.
Auxiliary power con-
nected.
N/A
Check the power source.
ERROR - Red
System healthy.
System failure.
Configuration mismatch. Protection partly
operational.
Verify system condition. See Sections 11:
Troubleshooting Guide and 5: System Self-
supervision.
T1, T3, T4 - Red
Normal status.
Trip relays T1, T3, T4
activated.
N/A
Check the reason for trip. Clear the fault and
reset indications by pushing SET button.
T2, T4 - Red
Normal status.
Trip relays T2, T4 acti-
vated.
N/A
Check the reason for trip. Clear the fault and
reset indications by pushing SET button.
S1 - Amber
Normal status.
Fiber sensor channel
activated.
Fiber sensor drops off or system set-up
not performed.
Check why sensor activated or check the sen-
sor continuity or perform system set-up (see
Section 3.3.1: Auto Configuration [System
Setup]).
S2 - Amber
Normal status.
Fiber sensor channel
activated.
Fiber sensor drops off or system set-up
not performed.
Check why sensor activated or check the sen-
sor continuity or perform system set-up (see
Section 3.3.1: Auto Configuration [System
Setup]).
S3 - Amber
Normal status.
Fiber sensor channel
activated.
Fiber sensor drops off or system set-up
not performed.
Check why sensor activated or check the sen-
sor continuity or perform system set-up (see
Section 3.3.1: Auto Configuration [System
Setup]).
QD - Amber
Normal status.
Quenching device channel
activated.
Fiber connection to quenching system
drops off or system set-up not performed.
Check the fiber connection and/or the system
configuration.
BI1 - Amber
Normal status.
Binary input 1 activated.
Binary input 1 lost connection.
Check the binary input wiring.
BI2 - Amber
Normal status.
Binary input 2 activated.
Binary input 2 lost connection.
Check the binary input wiring.
BO1 - Amber
Normal status.
Binary Output activated.
N/A
