FOTO9S2A
FOTO9S2AST
ENGLISH
ISFT9S2AEU_04_02.doc
3
1. GENERAL
DESCRIPTION
The 2 beam photocell amplifier FOTO9S2A together with the special probes (CR9MS, CR9MSD, CR20MS, etc..)
ensures maximum safety in automated access, e.g. lifts, robber-proof revolving doors, automatic doors, industrial
counterweighted doors etc… It can be used either positioning the probes directly on the opening or inside one or more
safety ribs. It conforms with the European reference standards (Electromagnetic compatibility 89/336/CEE) and is built
with “Redundant Electronics. The FOTO9S2A is also available in a box version for external use IP56 equipped with
cable conduits (mod. FOTO9S2AST).
The amplifier has:
•
An SW1 two contact Dip-Switch for enabling the individual beams (lever position ON),
•
Two red LEDs indicating the beam state
LED on = beam interrupted or disabled / LED off = beam aligned and uninterrupted
•
A TR1 potentiometer for adjusting beam attenuation
cursor completely to the right = minimum capacity / cursor completely to the left = maximum capacity
The table below shows the maximum capacity of a CR9MS probe in function of TR1 Trimmer cursor position.
TR1 Trimmer Cursor Position
Capacity CR/9MS [mt]
Anticlockwise end of stroke
9
7/8 7.5
6/8 6
5/8 5
4/8 4
3/8 3
2/8 2.5
1/8 2
Clockwise end of stroke
1.5
•
An output activated when one of the beams is interrupted.
•
A green LED indicating the state of the output (LED on = Exit not active, LED off = exit active)
•
A TEST button to check correct amplifier functioning. If the beams are aligned (red LEDs off), by pressing the button
the transmission train of impulses on the individual beams is disabled, so if the amplifier is working correctly the red
LEDs will remain lit for the whole time the button is held down.
•
A Test input on the terminal board. If the FOTO9S2A receives, on the TEST input, an impulse of a minimum
duration of 70msec it signals correct functioning by activating the output.
2. MAIN
FEATURES
•
Multiplex synchronised system for high immunity to disturbance
•
Redundant electronics
•
Management of 2 beams
•
1 relay output in N.O. / N.C. exchange corresponding to interruption of one of the two beams with an intervention
time of 50msec
•
Easy installation and alignment of the probes, thanks to the “Intensity Attenuation” of infrared rays function by means
of a trimmer.
•
Can be coupled with the Prastel probe models: CR9MS, CR9MS9, CR9MSD, CR9MSP, CRFC, CR20MS.
•
Conformity with reference European Directives: Electromagnetic Compatibility (EMC) 89/336/CEE
3. TECHNICAL
CHARACTERISTICS
Supply
12
÷
24 Vac/dc
±
10%
Power absorbed
Current absorbed
Max. 1 W a 12Vac Max.1.5W a 24Vac
Max 60mA (2 beams enabled)
I.R wavelength.
850 nm
Range
0,1 ÷ 20 m nominal (depending on probes used).
Relay outputs (contact clean in exchange)
N.A. / N.C.
Relay intervention time
50 ms
Reset time
0,5 s
Working temperature
-20
°
C
÷
+55
°
C
Size
110 X 75 X 35 mm FOTO9S2A, 110 X 55 X 75 mm FOTO9S2AST
Weight
400 g FOTO9S2A, 500 g FOTO9S2AST
The FOTO9S2A device must be installed inside another casing that features an IP rating of at least X4. The inside of the casing must be accessible
by means of appropriate tools.
The photocell is an auxiliary device for the detection of persons and/or objects and must therefore be used in conjunction with a security device.
The photocell must be subjected to periodical checks at least once every 6 months.
FOTO9S2A
