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. 757-7879
Mfr. Part No.OS32C-SP1
BrandOmron
TWD149,453.00
Each
units
- 0S32C 30 mm, 40 mm, 50 mm, 70 mm Scanner 3 2 D - - - - 3m 680 (On to Off) ms, 780 (Off to On) ms 24 V dc
RS Stock No. 511-7052
Mfr. Part No.1K3-100
BrandSmartscan
TWD20,745.00
Each
units
- 1K3 30mm Receiver, Sender 3 2 D 12 330mm - 0.5m 5m 40 ms 24 V dc
New
RS Stock No. 214-6755
Mfr. Part No.F3SG-2RE1950P30
BrandOmron
TWD54,178.00
Each
units
- F3SG 30mm Receiver, Sender - - - 96 - - - - - -
New
RS Stock No. 213-3707
Mfr. Part No.C2C-EA18030A10000
BrandSick
TWD30,333.00
Each
units
DeTec variant: deTec2 Core deTec 30mm Receiver - - PL c - 1800mm 15m - - 13000 ?s 24 V
New
RS Stock No. 214-6756
Mfr. Part No.F3SG-2SRB0160-25
BrandOmron
TWD14,991.00
Each
units
- F3SG 25mm Receiver, Sender - - - 8 - - - - - -
New
RS Stock No. 214-4303
Mfr. Part No.C4C-SA04530A10000
BrandSick
TWD19,587.00
Each
units
DeTec variant: deTec4 Core deTec 30mm Sender Type 4 - PL e - 450mm 15m - - - 24 V
RS Stock No. 136-3375
Mfr. Part No.C4C-EA06030A10000
BrandSick
TWD27,600.00
Each
units
DeTec4 Core C4C 30mm Receiver - - - - 600mm - 0m 12m 14 ms 24 V dc
New
RS Stock No. 213-1808
Mfr. Part No.M2C-SA0340HA10
BrandSick
TWD12,083.00
Each
units
- deTem 400mm Sender - - PL c 3 - - - 90m 20000 μs 19.2 → 28.8 V dc
RS Stock No. 127-8323
Mfr. Part No.XUSL4E2BB051L
TWD52,180.00
1 Pair
Pair(s)
Preventa XUSL4E - Receiver, Transmitter 4 3 E 2 510mm - 3m 10 m, 20 m 2.5 ms -
New
RS Stock No. 213-3718
Mfr. Part No.C4C-EA16510A10000
BrandSick
TWD66,768.00
Each
units
DeTec variant: deTec4 Core deTec 14mm Receiver Type 4 SIL 3 PL e - 1650mm 10m - - 19000 μs 24 V
New
RS Stock No. 213-3726
Mfr. Part No.C4MT-01214ABB03BE0
BrandSick
TWD24,240.00
Each
units
- miniTwin4 14mm 1 Twin-Stick Type 4 - PL e - 120mm 5m - - 14000 ?s 24 V
New
RS Stock No. 213-3734
Mfr. Part No.C4MT-07814ABB03FE0
BrandSick
TWD51,292.00
Each
units
- miniTwin4 14mm 1 Twin-Stick Type 4 - PL e - 780mm 5m - - 17000 ?s 24 V
New
RS Stock No. 213-3708
Mfr. Part No.C2C-EA19530A10000
BrandSick
TWD29,140.00
Each
units
DeTec variant: deTec2 Core deTec 30mm Receiver 2 SIL 1 PL c - 1950mm 15m - - 14000 μs 24 V
RS Stock No. 146-5854
Mfr. Part No.SLC440COM-R-1290-14
BrandSchmersal
TWD75,130.00
Each
units
SLC440COM 440 14mm Receiver - - - 128 1290mm - 300mm 7000mm 20 ms 24 V dc
RS Stock No. 757-7702
Mfr. Part No.F3S-TGR-CL2A-035-300
BrandOmron
TWD23,615.00
1 Pair
Pair(s)
- F3S-TGR-CL 35mm Receiver, Sender 2 - C 2 300mm - 0.2m 14m 103 ms 24 V dc
RS Stock No. 191-9850
Mfr. Part No.632081
BrandPilz
TWD46,451.00
Each
units
- opII4F 14mm Receiver, Transmitter 4 - E - 300mm - 0.2m 8m 15.2 ms 24 V dc
New
RS Stock No. 213-1809
Mfr. Part No.M2C-SA0340LA10
BrandSick
TWD12,083.00
Each
units
- deTem 400mm Sender - - PL c 3 - - - 17m 20000 μs 19.2 → 28.8 V dc
RS Stock No. 146-5826
Mfr. Part No.SLC440COM-E-0650-30
BrandSchmersal
TWD33,016.00
Each
units
SLC440COM 440 30mm Sender - - - 32 650mm - 300mm 10000mm 10 ms 24 V dc
RS Stock No. 136-3382
Mfr. Part No.C4C-EA15030A10000
BrandSick
TWD49,500.00
Each
units
DeTec4 Core C4C 30mm Receiver - - - - 1500mm - 0m 12m 14 ms 24 V dc
RS Stock No. 191-9840
Mfr. Part No.632027
BrandPilz
TWD63,669.00
Each
units
- PSEN opII3H 30mm Receiver, Transmitter 3 - D - 1200mm - 0.2m 18m 22.3 ms 24 V dc