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5. System Self-supervision
5. System Self-supervision
The EAFR-110 includes an extensive self-supervision fea-
ture. Self-supervision includes both internal functions and
external connections. The self-supervision module monitors
the power supply, HW malfunctions, SW malfunctions, the
binary input connections, 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 sys-
tem 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 ener-
gize 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-110
will remain in the Error mode until the disconnected sen-
sors are repaired.
If a dipswitch setting is changed after the auto-configuration
function (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.
16
EAFR-110 Current and Arc Light Sensor Relay User Manual MN026007EN February 2016 www.eaton.com
6. Connections
Figure 22. EAFR-110P Terminals at the Rear Plate.
EAFR-110P
X3
12
11
10
9
8
7
6
5
4
3
2
1
0.5
6.0
x In
0.05
2.0
T1/T2:
Latch
HSO:
Latch
S1:
TBD
N/A
Trip Relay:
Fast
CBFP:
100ms
Phase Sensor: 1A
Gnd Sensor:
1A
SW2
NL = Non Latch
X2
X1
15
14
+
+
+
13
12
11
10
9
8
7
6
5
4
3
+
2
1
I> set
GND
RX
S5
TX
Ig> set
NL
S1 Channel L
L+C
NL
S2 Channel L
L+C
TBD
S3/S4 Chan L
L+C
Arc Config: A
B
CBFP
150ms
Config.
5A
Select
5A
SW1
L = Light
C = Current
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