11
Instruction Booklet
IB0191004EN
Effective June 2020
EAFR-110PLV current and arc light
sensor relay user manual
EATON
www.eaton.com
Figure 13. EAFR-01 sensor connection step 7.
8. After completing the system auto-configuration setting, close
both end side covers back (see Figure 14).
Figure 14. EAFR-01 sensor connection step 8.
9. A maximum amount of three arc sensors can be daisy-chained
to the same sensor input on the EAFR-101 relay (see Figure 15).
Figure 15. EAFR-01 sensor connection step 9.
Auto-configuration is a part of the self-supervision function which
ensures that all connections and sensors are fully functional and
ready to operate at all times.
5. System self-supervision
The EAFR-110PLV includes an extensive self-supervision feature.
Self-supervision includes both internal functions and external
connections. The self-supervision module monitors the power
supply, HW malfunctions, SW malfunctions, the binary input connec-
tions, and sensor problems. Dipswitch settings are also supervised
by comparing the actual values with stored non-volatile memory data
(see Section 3.3.1: Auto configuration [System setup]).
In a healthy condition, the POWER LED is on and the system failure
(SF) relay is energized. If the self-supervision function detects a
faulty condition or the power supply fails, the self-supervision relay
is released and the ERROR LED is illuminated.
If a fiber sensor failure occurs, the unit will go into Error mode.
The ERROR LED will turn on, the SF relay will release, and the
corresponding faulty fiber sensor channel LED will start blinking. In
this situation, the unit is still in protection mode, but with the faulty
fiber sensor channel blocked. If the error is resolved, the unit will
automatically clear the SF-status. This means that the SF relay will
energize and the ERROR LED will turn off. If one or more of the
sensors are disconnected, the healthy sensors remain in use and
unit remains operational accordingly. The EAFR-110PLV will remain
in the Error mode until the disconnected sensors are repaired.
If a dipswitch setting is changed after the auto-configuration func-
tion (see Section 3.3.1: Auto configuration [System setup]) has
been executed, the unit will go into SF-alarm mode. The configured
(stored) setting is however still valid and the unit is still operational.
The SF relay can be reset by pressing and holding the “SET” button
for two seconds.
5.1 Open CT monitoring
If there is a current flow of more than 0.2 x In, the relay assumes
that the switchgear is energized. In this case, phases IL1, IL2, and
IL3 are monitored and supervised for open connection (no current
flow).
If one or two of the three phases is 0 while the other(s) remain
above 0.2 x In, the relay will issue an open CT alarm.
When an open CT alarm is issued, the SF-relay is released, the
ERROR LED turned on, and corresponding IL1, IL2, and IL3 LEDs
starts blinking.
SET push button
