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PHOTOELECTRIC BARRIER MODEL 224AC 

IMPORTANT WARNINGS TO READ

BEFORE THE INSTALLATION

 

Photoelectric barriers are devices that give an electric signal when an object passes through their sensing area. 

They are made of high quality materials and they are severely tested before being traded. However, should they be used in an application whose failure could cause damages, the following indications have to be taken into account:

 THE PHOTOELECTRIC BARRIER CAN BE USED AS A SENSOR TO DETECT THE PRESENCE OF AN OBSTACLE IF THE SENSING BEAM GETS INTERRUPTED. IN NO CASE THIS DEVICE CAN SUBSTITUTE THE OBLIGATORY SAFETY DEVICES THAT MUST BE APPLIED ON ALL DANGEROUS EQUIPMENTS.

SHOULD THE BARRIER BE INSTALLED NEAR INVERTERS, SWITCHING SUPPLIERS OR SIMILAR, DO NOT FORGET THAT THESE DEVICES (IF NOT PROPERLY FILTERED) GIVE INTO THE POWER SUPPLY NET HIGH INTENSITY ELECTRIC DISTURBANCES THAT CAN INTERFERE WITH THE PHOTOELECTRIC BARRIER FUNCTIONING.

THEREFORE, IN THESE CASES, IT IS NECESSARY TO PROVIDE UPSTREAM THE EQUIPMENT WITH AN ADEQUATE NET FILTER.

CONNECTIONS

1) Do not exceed the voltage limits printed on the product label. For DC photoelectric sensors, use stable tension,

2) Do not connect the photoelectric sensors power supply cables down‑stream from other devices and make sure that they are directly connected to the mains.

3) If the power supply source is a switching voltage regulator, connect the FG (Frame Ground) terminal to the ground.

4) Connect to ground the FG (Frame Ground) terminal and all metallic parts of every Industrial machinery or not if a photoelectric sensor is used in it.

5) Do not use the photoelectric sensors near electromagnetic or high frequency fields.

6) The cables of photoelectric sensors must be separate from the power supply cables, from the engines cables, from the inverters cables, or from any other electromagnetic device because induction noise could cause malfunction or damage to the photoelectric sensors. Separate the wires of the photoelectric sensor from the above indicated cables and then insert the wires into an earthed metal conduit.

7) After making all operations mentioned In the above point 6), if Inductive interference exists, an adequate transient suppression filter must be used on the power supply line in proximity to the photoelectric sensors.

8) When a large distance by the connection wires to the sensor has to be covered, use conductors with a cross‑section of at least 0.50 mm2 and do not exceed the maximum distance of 100 m,

9) The output signal of a photoelectric sensor cannot be used during the "INITIAL ZERO SETTING" (not more than 300 mS, see detailed description on GENERAL CATALOG).

ASSEMBLY

1) For correct assembly and alignment, all the accessories supplied with the sensor must be used.

2) To regulate the sensitivity adjustment trimmer use a suitable screw‑driver without exerting excessive force.

3) Do not turn too much fixing screws or nuts to avoid electrical or mechanical damages.

4) Mounting photoelectric sensors side by side, leave an appropriate place between them to avoid mutual interference,

5) When installing two or more emitters and the receivers side by side, alternate the emitter with the receiver or install a light barrier to prevent reciprocal interferences, Avoid reflection coming from the side or back walls or objects,

6) Do not expose the photoelectric sensors to direct source of fluorescent light which could prevent the correct working. Do not exceed the immunity limits to external light.

7) Do not use organic solvents or corrosive liquids to clean the lenses of the photoelectric sensors. The optical parts must be cleaned with a soft cloth and then dried.

8) Do not use the sensors in open air without adequate protection.

9) Do not use the photoelectric sensors in dusty places, In presence of steam, gases, corrosive steams, corrosive liquids, rain or water jets, Do not let condensation form on the sensor lenses.

10) Do not exceed the Indicated temperature limits.

11) Do not subject the appliance to strong vibrations or to shocks which con damage the sensor or can harm its impermeability.

FURTHER INFORMATION

The manufacturer is not liable for the improper use of the product. Any use and/or application which are not provided for by this Instructions sheet must be previously and directly authorized by the manufacturer.

P41 PHOTOELECTRIC BARRIER FOR EXTERNAL APPLICATION

TECHNICAL CHARACTERISTICS

- Nylon-fibreglass housing for electronic components,

- Anti-Interference optical filter to improve the functioning in case of high luminosity.

- Quick installation housings for flat surfaces with minimal drilling working.

- Modulated emitter with (Ga-Al-As) infrared LED.

- Green LED on the emitter. If indicates that the receiver is supplied.

- Yellow LED on the receiver. It indicates that the receiver is supplied, Once the tuning is performed, it switches off.

- 12V AC-DC or 24V AC-DC power supply

- 1A 24V DC - 0.5 A 120V AC relay output according to UN18612 norms, connected to the internal terminal board,

- Maximum switching distance in optimal conditions: 30 meters.

- Protection degree: IP54

INSTRUCTIONS FOR MOUNTING AND ALIGNMENT

1) Fix the housing bottom to the wall using the suitable screws and dowells.

2) Insert the connection cable 'through the sleeve and the housing hole, then connect It to the terminal board according to the following Instructions.

3) Check that the emitter and receiver supply voltage corresponds to 12 or 24 Volts, that it Is the voltage printed on the device.

4) Insert the B projector in the location prepared on the A housing, then block with C projector fixing (see diagram),

5) Supply the emitter with power: the green LED must be always switched on,

6) Supply the receiver with power: the yellow LED must be switched on (once the tuning is performed, it switches off)

7) The alignment is achieved by orientating the optical groups one against the other, by pressing the projector surface (mounted on the ball joint) until the yellow LED on the receiver switches off.

8) Tighten the fixing screws of the mobile equipments both of the emitter and of the receiver.

9) Check that the device is functioning using the suitable pierced TEST STRIP,

10) Close the housing offer inserting the D gasket into the A housing groove; fix the E front protection through the suitable screws and insert the F optical protection filter.

11) WARNING: during the installation consider that in case of poor visibility due to fog, rain or other, the functioning distance can be highly reduced.

12) All the provided accessories must be installed.

13) The photoelectric barrier must be periodically tested by specialized technicians to prevent or to identify any possible failure, Particularly:

- Check the optical parts and make sure that they are always clean. 

- Verify the relay triggering and check also the electrical contacts.

- Check the emitter-receiver alignment.

- Check the fixing screws and that all the equipment does not bear mechanical vibrations,

14) The non-observance of the above norms can cause the device failure.
 

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Revised: September 06, 2010 .
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