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. A set of light curtains contains a transmitter head and a 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.

Light curtains are great safety devices that are used to keep people safe around hazardous machinery which could cause them harm. They can help ensure user safety during routine operations like maintenance and repair.

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 14 mm to even 70 mm.

Typical Applications

Light curtains are a way of safeguarding employees from dangerous machines. The design of the safety light curtain offers more flexibility and simplifies machine set up, maintenance and repair than other solid traditional guarding systems such as mechanical barriers and sliding gates. They can be found in various applications including:

  • Packaging machines
  • Process machinery
  • Automated warehouses
  • Textile machinery
  • Electronic component assembly lines
  • Mechanical and hydraulic power presses

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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 Maximum Protective Width Minimum Scanning Distance Maximum Scanning Distance Maximum Response Time Supply Voltage
RS Stock No. 920-9710
Mfr. Part No.2TLA022303R0700
BrandABB
kr 25 821,47
1 Pair(s)
Pair(s)
Orion1 - 30mm Receiver, Sender 4 - E 64 1200mm - 0.2m 20m 19 (No Code) ms, 29 (With Code) ms 24 V dc
RS Stock No. 125-0678
Mfr. Part No.F3SG-2RE0560P14
BrandOmron
kr 9 315,00
1 Pair(s)
Pair(s)
- F3SG-RE 14mm Receiver, Sender 2 - C 55 560mm - 0.3 (Long) m, 0.3 (Short) m 3 (Short) m, 10 (Long) m 7 (ON to OFF) ms, 35 (OFF to ON Synchronized) ms, 135 (OFF to ON Not Synchronized) ms 24 V dc
RS Stock No. 196-4108
Mfr. Part No.XUSL4MB30H031N
kr 17 104,13
1 Pair(s)
Pair(s)
Preventa XUSL4M 30mm Receiver, Transmitter 4 3 - 16 310mm - 0m 4 m, 12 m 8 ms 24 V dc
New
RS Stock No. 213-1808
Mfr. Part No.M2C-SA0340HA10
BrandSick
kr 3 181,06
Each
Units
- deTem 400mm Sender - - PL c 3 - - - 90m 20000 μs 19.2 → 28.8 V dc
RS Stock No. 182-9560
Mfr. Part No.SLLP23-1750P88
BrandBanner
kr 34 236,07
Each
Units
- SLL 23mm Emitter, Receiver - 3 E - 1750mm - - 12m 26 ms 24 V dc
RS Stock No. 191-9844
Mfr. Part No.632064
BrandPilz
kr 15 791,22
Each
Units
- PSEN opII4H 30mm Receiver, Transmitter 4 - E - 750mm - 0.2m 18m 15.2 ms 24 V dc
RS Stock No. 757-7838
Mfr. Part No.F3SJ-E0705P25
BrandOmron
kr 16 943,78
1 Pair(s)
Pair(s)
- F3SJ 20mm Receiver, Sender 4 3 E 34 705mm - 0.2m 7m 15 (On to Off) ms, 70 (Off to On) ms 24 V dc
RS Stock No. 146-5842
Mfr. Part No.SLC440COM-R-0330-14
BrandSchmersal
kr 9 241,48
Each
Units
SLC440COM 440 14mm Receiver - - - 32 330mm - 300mm 7000mm 10 ms 24 V dc
RS Stock No. 146-5859
Mfr. Part No.SLC440COM-R-1610-30
BrandSchmersal
kr 16 556,42
Each
Units
SLC440COM 440 30mm Receiver - - - 80 1610mm - 300mm 10000mm 20 ms 24 V dc
New
RS Stock No. 214-4309
Mfr. Part No.C4C-SA13530A10000
BrandSick
kr 11 030,39
Each
Units
DeTec variant: deTec4 Core deTec 30mm Sender Type 4 - PL e - 1350mm 15m - - - 24 V
RS Stock No. 136-3377
Mfr. Part No.C4C-EA09030A10000
BrandSick
kr 11 991,15
Each
Units
DeTec4 Core C4C 30mm Receiver - - - - 900mm - 0m 12m 14 ms 24 V dc
RS Stock No. 182-9568
Mfr. Part No.SLLP40-630P88
BrandBanner
kr 17 767,39
Each
Units
- SLL 40mm Emitter, Receiver - 3 E - 630mm - - 12m 8.6 ms 24 V dc
RS Stock No. 746-7315
Mfr. Part No.F3SJ-A0295P30
BrandOmron
kr 18 910,82
Each
Units
- F3SJ 25mm Receiver, Sender 4 3 E 12 295mm - 0.2m 9m 17.5 (On to Off) ms, 70 (Off to On) ms 24 V dc
RS Stock No. 136-3365
Mfr. Part No.C4C-EA06010A10000
BrandSick
kr 9 148,25
Each
Units
DeTec4 Core C4C 14mm Receiver - - - - 600mm - 0m 8m 16 ms 24 V dc
RS Stock No. 151-2480
Mfr. Part No.450L-B4HN1950YD
kr 17 793,32
Each
Units
GuardShield 450L 30mm Transceiver 4 3 E 16 1950mm - 0.9m 6.5m <15 ms 24 V dc
RS Stock No. 183-5252
Mfr. Part No.450L-E4HL0150YD
kr 3 323,89
Each
Units
GuardShield 450L-E 30mm Transceiver - - E - 150mm - 0.9m 16.2m 13 ms 24 V dc
New
RS Stock No. 213-3726
Mfr. Part No.C4MT-01214ABB03BE0
BrandSick
kr 6 282,69
Each
Units
- miniTwin4 14mm 1 Twin-Stick Type 4 - PL e - 120mm 5m - - 14000 ?s 24 V
RS Stock No. 182-9531
Mfr. Part No.SGSXP2-500Q88
BrandBanner
kr 13 816,01
Each
Units
- SGS 500mm Emitter, Receiver - 3 E 2 500mm - 6m 60m 19 ms 24 V dc
RS Stock No. 146-5827
Mfr. Part No.SLC440COM-E-0810-14
BrandSchmersal
kr 12 846,88
Each
Units
SLC440COM 440 14mm Sender - - - 80 810mm - 300mm 7000mm 20 ms 24 V dc
New
RS Stock No. 213-1810
Mfr. Part No.M2C-SA0430HA10
BrandSick
kr 3 622,94
Each
Units
- deTem 300mm Sender - - PL c 4 - - - 90m 20000 μs 19.2 → 28.8 V dc