FT25B
ENGLISH
ISFT25B_03_06.doc
1. GENERAL
DESCRIPTION
In the photocell FT25B the transmitter can be powered with two 3.6V 2.7Ah Lithium-Tionyle Chloride batteries or with an external power
supply at 12-24 VACDC, selectable with a jumper.
The photocell has two terminals in which the output contact of a safety device (e.g. a rubber edge) can be connected, and it is
particularly suitable to be used in sliding gates, mounted on the moving wing, allowing to connect the edge safety device without long
cables or self-winding cables.
Battery life is more than 15 months.
The photocell is manufactured in compliance with the European directive 98/336/EEC (EMC).
2. APPLICATIONS
In sliding gates or other kinds of installations where cables cannot be used or must be reduced (e.g. in existing installations where a
safety device must be added)
3.
MAIN TECHNICAL FEATURES
Power supply (TX)
2 x 3.6V 2.7Ah Lithium-Tionyle Chloride batteries
or external 12 ÷ 24 V ac/dc
Power supply (RX)
12 ÷ 24 V ac/dc
Consumption (TX)
< 500 µA
Consumption (RX)
30 mA
Enclosure ABS
Size / Weight
110 x 50 x 25 mm 200g
Degree of insulation
IP 45
Infrared wavelength
950 nm
Relay contact capacity
0,5 A @ 24 V ac/dc
Infrared beam range
25 m nominal (8 m in external use )
Working temperature
-20 +70° C
Intervention time
< 40 ms
Restore time
< 120 ms
4.
RECEIVER TERMINAL BLOCKS
1
+12 ÷ +24 VAC/DC
Power supply 12 - 24 V ac/dc
2
0 V
Common supply
3
N.C.
Relay contact normally closed
4
C
Common relay contact
5
N.A.
Relay contact normally open
5.
TRANSMITTER TERMINAL BLOCKS
1
+12 ÷ +24 VAC/DC
Power supply 12 - 24 V ac/dc
2
0 V
Common supply
6. INSTALLATION
-
Mount the photocell by using the supplied templates (fig.2)
-
Connect the wires as described in paragraphs 4 and 5 and select the source of power supply with the relevant jumper (J2, fig 1B):
POSITION A: external power supply 12-24 VAC/DC
POSITION B: battery
-
Connect the output contact of the safety edge (or other safety devices) to the relevant terminals (J1, fig. 1B). If this option is not
used, don’t remove the existing short-circuit.
-
Align the beam with the receiver using the relevant adjustment screws “A” (fig. 2) on the receiver and transmitter.
-
Measure with a voltmeter the voltage at the receiver test-points (fig.3). This value varies in accordance with various parameters,
among which the distance between the photocells. The higher the voltage value at the test-points, the better the alignment.
Optimum voltage should be between 0,5 and 0,6 VDC.
-
Interruption of the infrared beam generates opening of the normally closed contact of the relay on the receiver and lighting up of
the red LED.
1 2 3 4 5
Fig. 1A
(RX)
1 2
J1: Terminals
for safety edge
contact
J2: Power supply
selection
Fig. 1B
(TX)
B
A
