Light Curtains

Safety light curtains are also known as safety light barriers or safety light screens. These optoelectronic devices are used to detect people present in the vicinity of moving machinery. Light curtains can be used as an alternative to mechanical barriers and other forms of traditional machine guarding. Set of light curtains contains transmitter head and receiver head. A transmitter generates an infra-red light between the two heads which acts as a detection zone. A movement detected within the detection zone initials the machine stopping procedure and automatically disconnect all hazardous machinery. To reactivate the machinery, an operator has to press reset button that is positioned outside of the danger area. Some models are equipped with an auto-reset option that automatically starts machinery once the detection zone is free of obstacles. A response time of all light curtains is just a fraction of a second, it means that no other barrier type can compare to that.

Selecting the right light curtains
Maximum scanning distance and beam resolution are 2 important attributes that determine the right device for you. A distance between transmitter and receiver can be various from 0 to 20m and the choice depends on the type of machinery that is used in conjunction with the curtain.
Beam resolution determines detection capability, light curtains with 14 mm beam resolution are able to detect small body parts such as a finger, 20 mm ones are suitable for palm detection. Beam resolution of 20 mm and above are ideal for hand, head or full body detection. Typical beam resolution values are between 14mm to even 70 mm.
The physical size of curtains is also important. Some model can be small as hand but the other ones are even 2.5 m long.

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Description Price Range Series Beam Resolution Component Type Safety Type SIL IEC 61508 PL EN ISO 13849-1 Number of Beams Protective Height Minimum Scanning Distance Maximum Scanning Distance Maximum Response Time Supply Voltage Application
RS Stock No. 127-8334
Mfr. Part No.XUSL4E30H016N
HK$8,589.74
1 Pair
Pair(s)
Preventa XUSL4E 30mm Receiver, Transmitter 4 3 E 8 160mm 0m 4 m, 12 m 4 ms 24 V dc Hand
RS Stock No. 127-8305
Mfr. Part No.XUSL2E30H031N
HK$7,153.53
1 Pair
Pair(s)
Preventa XUSL2E 30mm Receiver, Transmitter 2 1 C 16 310mm 0m 4 m, 12 m 6 ms 24 V dc Hand
RS Stock No. 127-8315
Mfr. Part No.XUSL4E14F016N
HK$10,798.67
1 Pair
Pair(s)
Preventa XUSL4E 14mm Receiver, Transmitter 4 3 E 15 160mm 0 m, 1 m 3 m, 6 m 4 ms 24 V dc Finger
RS Stock No. 127-8310
Mfr. Part No.XUSL2E30H026N
HK$7,080.74
1 Pair
Pair(s)
Preventa XUSL2E 30mm Receiver, Transmitter 2 1 C 13 260mm 0m 4 m, 12 m 6 ms 24 V dc Hand
RS Stock No. 127-8312
Mfr. Part No.XUSL2E30H016N
HK$5,619.91
1 Pair
Pair(s)
Preventa XUSL2E 30mm Receiver, Transmitter 2 1 C 8 160mm 0m 4 m, 12 m 4.5 ms 24 V dc Hand
RS Stock No. 127-8327
Mfr. Part No.XUSL4E14F046N
HK$14,255.03
1 Pair
Pair(s)
Preventa XUSL4E 14mm Receiver, Transmitter 4 3 E 45 460mm 0 m, 1 m 3 m, 6 m 7.5 ms 24 V dc Finger