Elvox EFA2 Manual Para El Conexionado Y El Uso página 3

1. General Description
The EFA2 photocells are fitted with a transmitter that can be powered by two 3V6 2.7 Ah lithium Thionyl chloride batteries or with an external 12/24 Vac/dc
power supply, selectable with a jumper. The optical unit (emitter diode + lens) of the transmitter and of the receiver can be oriented in three different directions
so it can be adapted to different installation situations.
The photocell has two terminals for the connection of a free contact of an external safety device (safety edge) and two terminals for the connection of a resistive
edge. The photocell is particularly suited for use on sliding gates, mounted on the mobile part it can be connected to a wire or resistive safety edge, without
having to lay cables or use re-wind cables.
The battery life-span is more than 15 months. In compliance with European reference standards (Electromagnetic Compatibility 89/336/CEE).
2. Main technical features
Power supply Transmitter
Power supply Receiver
Consumption Transmitter
Consumption Receiver
Container
Dimensions/weight
Protection rating
Infra-red wavelength
Relay contact range
Infra-red beam range
Operating temperature
Intervention time with triggering of photo-
cell beam
Intervention time with triggering of safety
edge connected to terminal strip
Reset time
3. Receiver terminal strip
1 +V
Power supply 12 - 24 Vac/dc
2 - V
Relay contact normally open or closed depending on NO/NC
N.C./N.A.
3
selection jumper
4 C
5 LOW BAT Flat battery Normally open contact
6 LOW BAT
4. Transmitter terminal strip
1 +12 ÷ +24 Vac/dc
2 0 V
EDGE
3
4 EDGE
5 EDGE 8K2
EDGE 8K2
6
5. Installation
- Fix the photocell using the supplied drilling template (fig. 2)
- Make connections as indicated in the previous paragraphs and select the
transmitter power supply with the specific jumper (J1, Fig. 1B):
POSITION A: external power supply 12-24 Vac/dc
POSITION B: battery powered
- Select the same operating frequency on the receiver and on the transmit-
ter with the specific jumpers (J2, fig 1A & 1B):
Frequency 1: Jumper disabled
Frequency 2: Jumper enabled
- Connect to the specific terminal strip (terminals 3 & 4, Fig. 1B) the safety
edge or external safety device contact to the transmitter. If this option
is not used, jump terminals 3 and 4.
- Connect to the specific terminal strip (terminals 5 & 6, Fig. 1B) the con-
tacts of the 8K2 resistive edge external to the transmitter. If this option
is not used, do NOT jump terminals 5 and 6.
- Select on the receiver the logic of the NO or NC output contact with jum-
per J3.
- Position on the transmitter the probe in the position from the three possi-
bilities most suitable to the alignment.
EN
2 3V6 2.7 Ah Lithium Thionyl chloride
batteries
Alternatively 12 - 24 Vac/dc
< 500 μA
30 mA
ABS
110 x 50 x 25 mm 200g
IP 45
950 nm
0.5 A @ 24 Vac/dc
25 m nominal (8 m outdoor )
-20 +55° C
< 40 ms
< 60 ms
< 150 ms
Power supply 12 - 24 Vac/dc
Common power supply
Terminal for safety edge free contact
(jump if not used)
Terminal for 8K2 resistive edge
(DON'T jump if not used)
- Align the beam to the receiver by adjusting the specific fixing screws "A"
(fig. 2) supplied, both on the receiver and the transmitter.
- With a voltmeter, measure the tension value on the receiver test-point.
(Fig. 2). This value varies according to various parameters, among which
the distance between the photocells. The higher the tension value on
the test-point the better is the alignment. The ideal measure should be
between 0.5 and 0.6 VDC.
- Check that the interruption of the infra-red beam causes the opening of
the normally closed contact of the relay on the receiver and the lighting
up of the red LED.
6. Flat battery signal
The flat battery situation is signalled optically by the transmitter to the re-
ceiver.
The receiver closes the free LOW BAT contact available in the terminal strip
and activates an intermittent buzzer.
The flat battery indication is given one week before the battery is completely
flat.
Once the batteries have been replaced, switch the receiver OFF then back
ON to deactivate the LOWBAT contact and the buzzer.
However, this will happen automatically after 15 minutes.
J2: Frequency Selection
J3: NO/NC contact selection
Fig. 1A (RX)
J1: Power supply selection
J2: Frequency Selection
Fig. 1B (RX)
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