DQS Safety Light Curtain (Press Photoelectric Hand Guard)

Type 4 safety light curtain engineered for presses, shears and high-demand guarding. Robust ≈35×51 mm body with resolutions 10/14/20/25/30/40/80 mm; standard sensing range 0.3–3 m (options up to 40 m); ambient light immunity ≥10,000 Lux (incidence ≥5°); typical response ≤10 ms; enclosure IP65. External/embedded controllers with aviation/M12 connection for quick commissioning.

Download DQS PDFDQS Video Demo
DQS Safety Light Curtain main image
DQS variant image
High EMC immunity for welding/press lines
DQS range and resolution
Resolutions 10–80 mm for finger to body
DQS dimensions & wiring
Dimension & typical wiring reference
Product Highlights
  • Type 4 architecture (IEC 61496-1/-2) with dual-channel outputs; PLe/SIL3 capable when paired with a safety relay/PLC.
  • Fast response ≤10 ms helps reduce ISO 13855 safety distance while maintaining productivity.
  • ≥10,000 Lux immunity with filtering against flicker, strobe and welding arc; excellent anti-interference near strong light sources.
  • 35×51 mm rugged body; IP65; aluminum housing and reinforced end caps for durability.
  • Quick installation: aviation/M12 plug, clear beam indicators; optional EDM via controller.
  • Comprehensive protection features: self-diagnosis, short/over-current/over-load protection, reverse polarity.

If any discrepancy with delivered datasheets/certificates, official documents prevail.

Resolution & Application Guide
Resolution (K)Typical Application
10 / 14 mmFinger protection (assembly, fixtures, close guarding)
20 / 25 mmPalm protection (access openings on presses/packaging)
30 / 40 / 80 mmHand-arm / body presence, aisles or zone guarding

Protective height H = (n − 1) × K. Overall length for DQS L = P + H + J + 36 (diagram shows 18 mm + 18 mm end allowances). P/J depend on resolution; see tables.

Technical Parameters (DQS Series)

CategoryItemTypical Value / OptionNotes
OpticalOperating principleThrough-beam IR LED, modulatedEmitter/receiver pair
Resolution (K)10 / 14 / 20 / 25 / 30 / 40 / 80 mmFinger → Body
Protective height (H)H = (n−1) × Kn = beam count
Response time≤ 10 msVaries with n
Ambient light immunity≥ 10,000 LuxIncidence ≥ 5°
Sensing range0.3–3 m (std); options 0.3–6/10/15/25/30/40 mCoding A..H per datasheet
Electrical / I/OSensor supplyDC 12/24 VReverse/over-voltage protected
Controller supplyAC 110–220 V ±15% 50/60 HzFor external controllers
Current consumption≤ 200 mA (sensor)Typical
OutputsDual relay (controller) / NPN / PNP optionsEDM available on selected controllers
IndicatorsTX: Power (red); RX: Output (green), Blocked (red)Front LEDs
SynchronizationWiredBest immunity for presses/robots
ConnectorsAviation / M12Quick install
Mechanical / EnvironmentBody section≈35 × 51 mmAluminum body, reinforced caps
Overall lengthL = P + H + J + 36P/J from dimension table
Ingress protectionIP65Dust-tight, water-jet resistant
Operating temp.−10 ~ +40 °C (non-icing)Storage −25 ~ +55 °C
Humidity35–85 %RH (oper.)Up to 95 %RH (storage)
ComplianceStandardsIEC 61496-1/-2; EN 61496-3:2019 TYPE 4Safety distance per ISO 13855
CertificationsCE / TÜV / UL (per delivery)Refer to certificates
Controller familyDQSW / DQSN / DQSS / DQSPExternal / embedded, single/dual outputs

DQS Series Detailed Specifications

Tables compute beam count n, protective height H and overall length L from the dimension chart: H=(n−1)×K, L=P+H+J+36. P/J(mm) by resolution: 10→5/32, 14→7/32, 20→10/25, 25→12.5/25, 30→15/25, 40→20/25, 80→40/25. Standard range is 0.3–3 m; extended ranges available by code.

K (mm)Beams nProtective Height H (mm)P/J (mm)Overall Length L (mm)Model ExampleRange
106505/32123DQS06/10-500.3–3 m (std)
108705/32143DQS08/10-700.3–3 m (std)
1010905/32163DQS10/10-900.3–3 m (std)
10121105/32183DQS12/10-1100.3–3 m (std)
10141305/32203DQS14/10-1300.3–3 m (std)
10161505/32223DQS16/10-1500.3–3 m (std)
10181705/32243DQS18/10-1700.3–3 m (std)
10201905/32263DQS20/10-1900.3–3 m (std)
10222105/32283DQS22/10-2100.3–3 m (std)
10242305/32303DQS24/10-2300.3–3 m (std)
10262505/32323DQS26/10-2500.3–3 m (std)
10282705/32343DQS28/10-2700.3–3 m (std)
10302905/32363DQS30/10-2900.3–3 m (std)
10323105/32383DQS32/10-3100.3–3 m (std)

Extended ranges 0.3–6/10/15/25/30/40 m available by code (A..H). Keep model format similar to catalog rows (e.g., DQS06/10-50).

Typical Applications

  • Presses / shears / press brakes: 10–25 mm for hand protection; ≤10 ms response suits short stopping-time systems.
  • Injection molding / hydraulic cutters / automated doors: stable long-distance guarding with strong EMC immunity.
  • Packaging / logistics cells: 30–80 mm for presence and aisle guarding.
  • General machinery: integrate with a safety relay/PLC for safe stop, interlock and EDM monitoring.

Safety distance reference (ISO 13855): S = K × T + C, where T is machine stopping time.

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