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Active Infrared Beam Detector' troubleshooting

2020.12.22

During the use of active infrared beam detector, we have sorted out some frequently-occurring faults, which can be eliminated by referring to the following steps to facilitate on-site maintenance:

A.If Power on,but power LED off.
Possible cause:
1.No voltage on power cable;
2.Broken circuit or short circuit;
3.Beyond specified voltage;
4.Power cable exceeds the specified length;
Remedy:Check the PSU,voltage,cables and connectors

B.When beam is blocked,the alarm LED does not indicate,nor does the alarm relay switch.
Possible cause:
1.There is reflection or cross-talk from other transmitters;
2.Walk speed set too long;
3.Alarm output cable is shorted or damaged;
Remedy:
1.Change beam path or change TX/RX frequency channel;
2.Ensure all beams all blocked;
3.Change walk-speed setting;
4.Check RX terminal and output cable;

C.When beam is not blocked,alarm LED indicates activation
Possible cause:
1.Beam is out of alignment;optical axis does not overlap;
2.There are objects between TX and RX;
3.Frequency is incorrect;
4.The cover is dirty or capped by snow,frost and ice;
5.TX is faulty or OFF;
Remedy:
1.Adjust optical axis;
2.Check objects between TX and RX;
3.Ensure the frequency of TX and RX is the same;
4.Clean cover or user heater;
5.Check the voltage or wiring of TX;

D.False alarm
Possible cause:
1.Bad wiring and fluctuant power voltage;
2.Randomly blocked,like birds,paper or leaves;
3.The beams base is unstable;
4.Out of alignment;
Remedy:
1.Check power,current and wiring;
2.Change installation location;
3.Strengthen installation base;
4.Re-align;

About Us

Shenzhen Alean Security Equipment Co., Ltd. has been a leading manufacturer in security field of China. Our product range includes IR perimeter barrier, smart home alarm system, and burglar alarm products, the products & company are certified by CE,RoHS,CCC and ISO9001:2015.

Contact Us

Add: 3rd Floor, Building 7, Jiayiyuan Tech park, Huaning Rd, Dalang Sub-district, Longhua Town, Shenzhen 518000 P.R. China

Tel:+86-755-82823131
Fax:+86-755-82823628
Email:info@alean.cn