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7. Connections
EAFR-102 Arc Fiber Loop Sensor Relay User Manual
MN026006EN February 2016 www.eaton.com
A maximum 40 m (131 ft.) length of fiber sensor for types
EAFR-06 and EAFR-08 and a maximum 50 m (164 ft.) length
of fiber sensor type EAFR-07 can be connected to each
channel. For details on sensors refer to Section 4: Arc
Sensors.
7.2.2 Binary Inputs BI1 and BI2
The EAFR-102 contains two binary inputs: BI1 and BI2. BI1
is always reserved for the second trip criteria signal. In the
most typical application, the EAFR-102 is receiving over-
current information from the Eaton EAFR-110 device. Over-
current information may also come from another device
(e.g.: an Eaton upstream protection relay). Alternately, any
other signal (such as under-voltage, or similar) can be used
as the second trip criteria along with the light information.
otee:
N
When the EAFR-102 receives an over-current signal
from a non-Eaton EAFR-110 device, the actual opera-
tion time depends on the operation time of the exter-
nal device and so total operational time cannot be
specified or guaranteed.
BI2 can be used for receiving a trip signal or arc light signal.
The function of the BI2 is configured using dipswitches (see
Section 3.5: Dipswitch Settings).
The inputs are activated by connecting a dc signal exceed-
ing the specified nominal 24 Vdc threshold level of the cor-
responding input. The actual activation of the binary input
occurs at 80% of the specified nominal threshold value (i.e.:
19 Vdc).
7.3 Auxiliary Voltage
The auxiliary power supply voltage is (110-220) Vac / (125-
250) Vdc.
After powering up, the unit protection is active and opera-
tional within 50 ms.
