Vimar Elvox EFA3, Connection And Operating Manual, Page: 5 / 8

5 EN
EFA3 PHOTOCELLS
External wall synchronised photocell.
Consisting of receiver (RX) and transmitter (TX) with modulated infrared rays.
N.B. Use for backscattering the installation on non-rigid surfaces subject to vibrations is forbidden.
TECHNICAL CHARACTERISTICS
:
- Supply voltage:
12-24Vac
12 – 28Vdc
- Max. absorption:
at 12 V: Rx 34 mA, Tx (min) 13 mA
at 24 V: Rx 53 mA, Tx (min) 15 mA
- Relay power: 1 A at 24 V d.c. / 120 V a.c.
- Answer time: < 30 ms.
- Operating temperature: -20° C ¸ +55° C
- Protection rating: IP55
- Max. range: 15 m
N.B The range may decrease by 50% when there are atmospheric phenomena: fog, rain, dust etc.
Dimensions (WxHxD): 58x87x44 mm
INSTALLATION:
1) Insert a flat screwdriver in the groove in the lower side of the cover (see Fig. 1).
2) Fix the bottom of the photocell to the wall, using 2 wall fixing plugs or 2 self-threading screws with diameter 3.9 mm for metal
fixing, aiming to obtain the best possible alignment.
CONNECTIONS
1) Make the electrical connection taking care to respect the polarity of the receiver and transmitter, when powered by contin-
uous current.
2) With two transmitters (TX) nearby, the ray of one could interfere with the other receiver, compromising correct operation.
To avoid this problem, if alternating current is available, it is possible to use the synchronism system which allows two pairs of
photocells to work alternately.
To enable the synchronism function, make the connections as shown in figure 4.
LED Meanings
LED TX, blue,signals the presence of power in the photocell transmitter, if not lit check the power polarity. The blue LED RX
signals the correct alignment of the photocell TX and RX, and goes out when the photocell is occupied
4) Having installed the photocell. Check the operations by breaking the beam (infra-red beam) several times; check that the
LED RX goes out and that the relay commutates.
5) Having completed the test, replace the front panel.