12
Instruction Booklet
IB0191004EN
Effective June 2020
EAFR-110PLV current and arc light
sensor relay user manual
EATON
www.eaton.com
6. Connections
Figure 16. EAFR-110PLV terminals at the rear plate.
6.1 Outputs
6.1.1 Trip relays T1 and T2
The EAFR-110PLV relay has integrated trip relays T1 and T2 for trip-
ping the circuit-breakers. T1 and T2 relays are normally open type
(NO).
6.1.2 Trip relays T3 and T4
Trip relays T3 and T4 are not utilized in the EAFR-110PLV, and are
reserved for future use.
6.1.3 High speed outputs (HSO1 and HSO2)
The EAFR-110PLV contains two high speed semiconductor outputs:
HSO1 and HSO2. These outputs may be utilized either for direct
tripping of a circuit breaker or as heavy duty signaling outputs. Due
to the high current carrying capacity, HSO1 and HSO2 are capable of
supplying current or light information to a maximum of 20 EAFR-100
series units without a need for signal amplifiers. HSO1 operation is
dependent on the configuration select dipswitches. For details see
Section 3.6.
6.1.4 Binary output BO1
One binary output is available (+24 Vdc). The binary output function
can be configured using the dipswitches (see Section 3.5: Dipswitch
settings).
ote:
N
The binary output is polarity sensitive (see Section 7: Wiring diagram).
6.1.5 System failure relay SF
The system failure relay (SF) is a form C type (NO/NC) and is ener-
gized in the healthy condition. Whenever the EAFR-110PLV detects
a system error or disconnection of the auxiliary power supply, the
contact changes its state. The state of the SF relay remains the
same until the relay returns to a healthy condition and the SF relay is
energized again.
6.2 Inputs
6.2.1 Current measurement inputs
The EAFR-110PLV has four CT inputs for three-phase current and
earth current measurement. Both phase current and earth current
inputs may be configured to 1 or 5 amps nominal current input
using dipswitches (see Section 3.6: Dipswitch settings). For setting
current threshold levels refer to Section 3.5: Current threshold
setting. An open circuit detection feature is included, for more
details, refer to Section 5.1: Open CT monitoring.
6.2.2 Arc sensor channels S1, S2, S3, S4, and S5
The EAFR-110PLV has four arc point sensor channels (S1, S2, S3,
and S4). A maximum three arc point sensors (type EAFR-01) may be
connected to each channel.
S5 is a fiber optic I/O that is used as a fiber optic loop sensor input
on other versions of the EAFR-110. The EAFR-110PLV uses the TX
output of S5 for controlling the Arc Quenching Device. The relay
sends a continuous light pulse to the arc quenching device for self-
supervision purposes.6.2.3 Binary Inputs (BI1 and BI2)
The EAFR-110PLV contains two binary inputs (BI1 and BI2). The
function of binary inputs is selected using the dipswitches accord-
ing to standard arc configurations applications (see Section 3.6).
Typically, binary inputs are utilized for receiving the arc light informa-
tion from the EAFR-101 and EAFR-102 units, and receiving the over-
current information from the other EAFR-110PLV devices.
The inputs are activated by connecting a dc signal exceeding the
specified nominal threshold level of the corresponding input. The
threshold level is 24Vdc. The actual activation of the binary input
occurs at 80% of the specified nominal threshold value (i.e.: 19Vdc).
6.3 Auxiliary voltage
The auxiliary power supply voltage is (110-220) Vac / (125-250) Vdc.
After powering up, the relay protection is active and operational
within 50 ms.
