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DQSA Area Safety Protection Light Curtain

Perimeter safety light curtain using reflector mirrors for 2/3/4-side guarding around robot cells, conveyors and work areas. Beam spacing 40 / 80 mm; fast response < 15 ms; ambient light immunity ≥ 10,000 Lux; enclosure IP65. Typical reach: single-side ≤ 40 m, dual-side ≤ 20 m, triple-side ≤ 15 m, quad-side ≤ 12 m.

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Posts, reflectors & long-range guarding
2/3/4-side composition & layout examples
Wiring diagrams & pedestal accessories
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Product Highlights
  • Perimeter guarding up to 4 sides via high-quality reflector mirrors; flexible layout for robot cells and stations.
  • Fast response < 15 ms (incl. controller) for quick stop; helps meet ISO 13855 safety distance.
  • ≥10,000 Lux immunity (incidence ≥5°); strong EMC design against flicker, welding arc and stray light.
  • IP65, aluminum posts and reinforced caps; durable for harsh workshops.
  • Dual NPN/PNP outputs available; short-circuit/over-load protection and self-diagnostics.
  • Complies with IEC 61496-1/-2, EN 61496-3:2019 TYPE4, EN 13849-1 etc. (see delivered certificates).

Typical reach: 1-side ≤40 m, 2-side ≤20 m, 3-side ≤15 m, 4-side ≤12 m. Verify on site per layout.

Application Guide
LayoutTypical Use
Single side (≤40 m)Long aisles / linear access
L-shape dual side (≤20 m)Corner guarding, conveyors
U-shape triple side (≤15 m)Cell perimeter around three sides
O-shape quad side (≤12 m)Full enclosure of robot/fixture area

Resolution options: 40 mm or 80 mm. Choose 80 mm for wider area / body detection.

Technical Parameters (DQSA Series)

CategoryItemTypical Value / OptionNotes
OpticalOperating principleThrough-beam IR with reflector mirrorsForms 2/3/4-side perimeter
Beam spacing (K)40 mm / 80 mmBody presence / perimeter
Protection height (H)H = (n − 1) × Kn = beam count
Typical reach1-side ≤40 m; 2-side ≤20 m; 3-side ≤15 m; 4-side ≤12 mWith proper alignment
Response time< 15 msIncl. controller
Ambient light immunity≥ 10,000 LuxIncidence ≥ 5°
ElectricalSupplyAC 220/110 V ±50/60 Hz or DC 24 VController + sensors
OutputsDual NPN / PNP (optional)Short/over-load protected
Contact capacityAC250 V 5 A (controller)Relay outputs
Dielectric strengthAC1500 V, 60 sInsulation >100 MΩ
IndicatorsPower / alignment / blocked LEDsOn post modules
SyncWiredStable in long runs
Mechanical / EnvironmentIngress protectionIP65Aluminum post, ABS caps
Operating temp.−10 ~ +50 °CStorage 20 °C, RH ≤ 85%
Post height (L)See table (computed)Depends on H
AccessoriesPedestal, reflector, cablingSee options
ComplianceStandardsIEC 61496-1/-2; EN 61496-3:2019 TYPE 4; EN 13849-1Safety distance per ISO 13855
CertificatesCE / TÜV / UL (per delivery)Refer to official docs
System integrationSafety relay / Safety PLCEDM & interlock supported

DQSA Series Detailed Specifications

For DQSA perimeter posts the relations are: H = (n − 1) × K, L = H + Δ with Δ = 81 mm (for K=40) or 101 mm (for K=80), and reflector height I = L + 150 mm (typical). Tables below are auto-generated.

K (mm)Beams nProtective Height H (mm)Post Height L (mm)Reflector Height I (mm)Model Example
404120201351DQSA04/40-120
406200281431DQSA06/40-200
408280361511DQSA08/40-280
4010360441591DQSA10/40-360
4012440521671DQSA12/40-440
4014520601751DQSA14/40-520
4016600681831DQSA16/40-600
4018680761911DQSA18/40-680
4020760841991DQSA20/40-760
40228409211071DQSA22/40-840
402492010011151DQSA24/40-920
4026100010811231DQSA26/40-1000
4028108011611311DQSA28/40-1080
4030116012411391DQSA30/40-1160
4032124013211471DQSA32/40-1240
4034132014011551DQSA34/40-1320
4036140014811631DQSA36/40-1400
4038148015611711DQSA38/40-1480
4040156016411791DQSA40/40-1560
4042164017211871DQSA42/40-1640
4044172018011951DQSA44/40-1720
4046180018812031DQSA46/40-1800
4048188019612111DQSA48/40-1880
4050196020412191DQSA50/40-1960
4052204021212271DQSA52/40-2040
4054212022012351DQSA54/40-2120
4056220022812431DQSA56/40-2200
4058228023612511DQSA58/40-2280
4060236024412591DQSA60/40-2360
4062244025212671DQSA62/40-2440
4064252026012751DQSA64/40-2520
4066260026812831DQSA66/40-2600
4068268027612911DQSA68/40-2680
4070276028412991DQSA70/40-2760
4072284029213071DQSA72/40-2840

Models follow the format DQSA NN/K-H, e.g. DQSA04/40-120. Choose pedestal and mirror kits per cell layout.

Typical Applications

  • Robot cells / rotary tables: 3- or 4-side perimeter with pedestal posts and mirrors.
  • Packaging & logistics: long aisle single-side guarding up to 40 m.
  • Machinery periphery: presses, shears, palletizers; interlocked with safety relay/PLC.
  • Flexible retrofits: fast installation with pedestal kits; easy alignment via visible pointer.

Use ISO 13855 to calculate the safety distance S = K × T + C (T: machine stopping time).

Frequently Asked Questions

Is the DQSA an area safety light curtain or a perimeter guarding system?

The DQSA is a perimeter-guarding light curtain that uses reflector mirrors to bend the beam around 2, 3 or 4 sides of a robot cell or work area. With 40 mm or 80 mm beam spacing it provides body/area presence detection rather than fine finger protection, making it ideal for fencing off the perimeter of large hazardous zones.

What detection range does the DQSA cover with reflectors?

Typical reach is single-side ≤ 40 m, dual-side (L-shape) ≤ 20 m, triple-side (U-shape) ≤ 15 m and quad-side (O-shape) ≤ 12 m, achieved with proper mirror alignment. Protection height follows H = (n − 1) × K, where n is the beam count and K is the 40 or 80 mm spacing, so you can build perimeters over 3 m tall.

How do I calculate the ISO 13855 safety distance for the DQSA?

Use S = K × T + C from ISO 13855, where K is the approach speed (1600 or 2000 mm/s), T is the total stopping time including the curtain's < 15 ms response, and C is the intrusion penalty based on resolution. With 40/80 mm spacing the DQSA detects body presence, so size C for whole-body access and verify the mounting distance on site.

Can the DQSA replace a Keyence, SICK or Omron perimeter scanner setup?

For fixed perimeter guarding it is a cost-effective alternative to multi-sided light curtains or laser scanners. It complies with IEC 61496-1/-2 and EN 61496-3:2019 TYPE 4 and EN 13849-1, offers dual NPN/PNP outputs, and integrates with a safety relay or safety PLC using EDM, matching the interfaces of common Keyence/SICK/Omron systems.

What ingress protection and ambient light immunity does the DQSA have?

The DQSA is rated IP65 with aluminum posts and reinforced ABS caps for harsh workshops, and offers ambient light immunity ≥ 10,000 Lux at incidence ≥ 5°. Its EMC design resists flicker, welding-arc light and stray reflections, and it operates from −10 to +50 °C, suiting presses, palletizers and welding cells.

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Specs reviewed by Engineer Cai, Senior Application Engineer. CE & TÜV compliant — see certificates.

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