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. 913-9255
Mfr. Part No.C2C-SA03030A10000
BrandSick
SGD292.80
Each
units
DeTec2 Core - 30mm Sender 2 1 C - 300mm - 0m 10 (Minimum) m, 12 (Typical) m 10 ms 24 V dc
RS Stock No. 701-2921
Mfr. Part No.C2MT-01824BBC03BE0
BrandSick
SGD643.91
Each
units
MiniTwin C2MT 24mm Receiver, Sender 2 2 D - 180mm - 0m 8m 13 ms 24 V dc
RS Stock No. 913-9286
Mfr. Part No.C2C-EA12030A10000
BrandSick
SGD848.00
Each
units
DeTec2 Core - 30mm Receiver 2 1 C - 1200mm - 0m 10 (Minimum) m, 12 (Typical) m 12 ms 24 V dc
RS Stock No. 701-2924
Mfr. Part No.C2MT-03024BBC04DE0
BrandSick
SGD735.90
Each
units
MiniTwin C2MT 24mm Receiver, Sender 2 2 D - 300mm - 0m 8m 13 ms 24 V dc
RS Stock No. 701-9262
Mfr. Part No.C4MT-01814ABB03BE0
BrandSick
SGD1,003.20
Each
units
- C4MT 14mm Receiver, Sender 4 3 E - 180mm - 0m 5m 14 ms 24 V dc
RS Stock No. 913-9277
Mfr. Part No.C2C-SA12030A10000
BrandSick
SGD729.60
Each
units
DeTec2 Core - 30mm Sender 2 1 C - 1200mm - 0m 10 (Minimum) m, 12 (Typical) m 12 ms 24 V dc
RS Stock No. 701-2940
Mfr. Part No.C2MT-03034BBC03DE0
BrandSick
SGD681.48
Each
units
MiniTwin C2MT 34mm Receiver, Sender 2 2 D - 300mm - 0m 8m 13 ms 24 V dc
RS Stock No. 913-9264
Mfr. Part No.C2C-EA03030A10000
BrandSick
SGD411.20
Each
units
DeTec2 Core - 30mm Receiver 2 1 C - 300mm - 0m 10 (Minimum) m, 12 (Typical) m 10 ms 24 V dc
RS Stock No. 701-2937
Mfr. Part No.C2MT-06024BBC04FE0
BrandSick
SGD963.05
Each
units
MiniTwin C2MT 24mm Receiver, Sender 2 2 D - 600mm - 0m 8m 13 ms 24 V dc
RS Stock No. 701-2928
Mfr. Part No.C2MT-04824BBC03DB0
BrandSick
SGD871.05
Each
units
MiniTwin C2MT 24mm Receiver, Sender 2 2 D - 480mm - 0m 8m 13 ms 24 V dc
RS Stock No. 913-9273
Mfr. Part No.C2C-EA09030A10000
BrandSick
SGD702.40
Each
units
DeTec2 Core - 30mm Receiver 2 1 C - 900mm - 0m 10 (Minimum) m, 12 (Typical) m 11 ms 24 V dc
RS Stock No. 701-2946
Mfr. Part No.C2MT-01834BBC03BE0
BrandSick
SGD593.25
Each
units
MiniTwin C2MT 34mm Receiver, Sender 2 2 D - 180mm - 0m 8m 13 ms 24 V dc
New
RS Stock No. 213-1822
Mfr. Part No.WEU26/3-103A00
BrandSick
SGD856.21
Each
units
- WSU/WEU26-3 30mm Receiver Type 4 - PL e 1 - - - 70m 22000 μs 19.2 → 28.8 V dc
New
RS Stock No. 213-3737
Mfr. Part No.C4MT-09614ABB03FE0
BrandSick
SGD2,649.03
Each
units
- miniTwin4 14mm 1 Twin-Stick Type 4 - PL e - 960mm 5m - - 17000 ?s 24 V
RS Stock No. 701-2934
Mfr. Part No.C2MT-09024BBC03FE0
BrandSick
SGD1,188.34
Each
units
MiniTwin C2MT 24mm Receiver, Sender 2 2 D - 900mm - 0m 8m 13 ms 24 V dc
New
RS Stock No. 214-4307
Mfr. Part No.C4C-SA10530A10000
BrandSick
SGD1,602.96
Each
units
DeTec variant: deTec4 Core deTec 30mm Sender Type 4 - PL e - 1050mm 15m - - - 24 V
New
RS Stock No. 213-1810
Mfr. Part No.M2C-SA0430HA10
BrandSick
SGD631.10
Each
units
- deTem 300mm Sender - - PL c 4 - - - 90m 20000 μs 19.2 → 28.8 V dc
New
RS Stock No. 213-1818
Mfr. Part No.M4C-SA0340LA10
BrandSick
SGD708.06
Each
units
- deTem 400mm Sender Type 4 - PL e 3 - - - 17m 20000 μs 19.2 → 28.8 V dc
New
RS Stock No. 213-3701
Mfr. Part No.C2C-EA04530A10000
BrandSick
SGD440.86
Each
units
DeTec variant: deTec2 Core deTec 30mm Receiver 2 SIL 1 PL c - 450mm 15m - - 10000 μs 24 V
New
RS Stock No. 214-4311
Mfr. Part No.C4C-SA15010A10000
BrandSick
SGD2,781.86
Each
units
DeTec variant: deTec4 Core deTec 14mm Sender Type 4 - PL e - 1500mm 10m - - - 24 V