7
Instruction Booklet
IB0191004EN
Effective June 2020
EAFR-110PLV current and arc light
sensor relay user manual
EATON
www.eaton.com
3.3 Push-button description
The EAFR-110PLV contains one single push-button (SET) that can be
used for all operational functions of the relay. The SET push-button
is used to initialize the auto-configuration of the system (see Section
3.3.1) and for resetting the indicators and latched output relays.
3.3.1 Auto configuration (system setup)
When all current circuits, sensors, and binary lines have been
connected, an auto-configuration procedure must be executed. The
initialization sequence is performed by pressing the SET button
for two seconds, and the EAFR-110PLV sensor LEDs and BI1/BI2
LEDs start blinking. The relay scans these inputs to see if they are
connected and, when an input is detected, the corresponding LEDs
are illuminated to mark that a connection was found. The inputs
without a connection continue blinking during the remaining three
seconds. After five seconds, all LEDs are turned off. During this
system setup, the dipswitch settings are also stored in non-volatile
memory.
All sensor inputs will remain operational even when not auto
configured. The auto configuration is only used for self-supervision
purposes.
ote:
N
To redo auto configuration for a relay containing less connections
(binary inputs/outputs or sensors) than in previous memorized set-up, a
dip-switch (anyone) must be moved back and forth prior to performing
auto-configuration. Timeout allowing new configuration is one minute.
Reconfiguration with more connections is allowed without moving a
dip-switch.
3.4 Reset
All LED indications and latched trip relays are reset by pressing the
SET button for one second. Otherwise, the latched trip relays will
remain activated until auxiliary power is disconnected. All LED indi-
cations will remain active until a reset is performed by the operator,
even in the case of disconnecting the auxiliary power supply (see
Section 3.7: Non-volatile memory).
3.5 Current threshold setting
The EAFR-110PLV relay has four current measurement inputs utilized
for three-phase and earth current measurement. Both phase current
and earth current measurements are utilized as the second trip
criteria in an arc protection system in order to avoid a trip caused by
natural light sources. Phase over-current threshold is typically set 50
% above the highest load current (In). Earth fault over-current is very
sensitive. Set points are set using potentiometers (see
Figure 3). An accurate setting is obtained by injecting the desired
set value using a relay test set to phase and earth current inputs of
the EAFR-110PLV, simultaneously adjusting the potentiometers until
phase and earth current indication LEDs are illuminated.
The setting range for the phase over-current stage is 0.5 to 6 xIn.
The setting range for earth fault over-current stage is 0.05 to 2 xIn.
Figure 3. EAFR-110PLV over-current setting potentiometers.
