A no-blind-zone safety light curtain for industrial automation. Compact 30×28 mm body with resolutions 10/20/30 mm; standard sensing range 0.3–3 m (optional 0.3–6 m); strong ambient light immunity ≥ 10,000 Lux (incidence ≥ 5°); response time ≤ 15 ms; ingress protection IP65. Dual-channel NPN/PNP OSSD (NO/NC) with EDM; blind-spot-free window for safer detection.
Flexible install: M12 aviation plug; side / end / tubular mounting accessories available.
Specs summarized from the DQO manual; if differences exist, the datasheet and delivered certificates prevail.
Resolution & Application Guide
Resolution (K)
Typical Application
10 mm
Finger protection (assembly, fixtures, near point-of-operation)
20 mm
Palm/hand protection (packaging, access openings)
30 mm
Arm/body presence (perimeter, aisles)
Protective height H = (n − 1) × K. Overall length L ≈ H + 13.5 mm (end allowance P+J≈6.75+6.75).
Technical Parameters (DQO Series)
Category
Item
Typical Value / Option
Notes
Optical
Operating principle
Through-beam infrared LED, modulated
Emitter/receiver pair; dead-zone-free window
Resolution (K)
10 / 20 / 30 mm
Finger / Hand / Arm-body
Protective height (H)
H = (n−1) × K
n = number of beams
Response time
≤ 15 ms
Varies with beam count
Ambient light immunity
≥ 10,000 Lux
Incidence ≥ 5°
Sensing range
0.3–3 m (standard); 0.3–6 m (optional)
Specify on order
Electrical / I/O
Supply
DC 12/24 V; AC 110–220 V (with controller)
Reverse/over-voltage protection
Safety outputs
Dual-channel NPN / PNP (OSSD), NO/NC selectable
Sink ≤500 mA, short-circuit protection
Channel capability
≤ 200 mA (typ.)
Transistor output
Protection
Short / Over-current / Over-load / Reverse polarity
Auto recovery
Indicators
Power / Run / Blocked
Branch LEDs show beam status
Connector
M12 circular aviation connector
Custom cable lengths
Synchronization
Optical
Fewer cables; robust immunity
Mechanical / Environment
Body section
30 × 28 mm
Aluminum alloy; ABS end-caps
Overall length
L ≈ H + 13.5 mm
P+J ends ~6.75 mm each
Ingress protection
IP65
Dust-tight, water-jet resistant
Operating temp.
−10 ~ +40 °C
Storage −25 ~ +55 °C
Humidity
Operating 35–85 %RH
Storage 35–95 %RH
Compliance
Standards
IEC 61496-1/-2, EN 61496-3 (Type 4), EN ISO 13849-1 (PL d Cat.4)
Safety distance per ISO 13855
Certifications
CE, UL, TÜV
Refer to delivered certificates
System integration
Safety relay / Safety PLC
Independent dual inputs; EDM support
DQO Series Detailed Specifications
Model format: DQOnn/K-H. Example: DQO12/10-110 (K=10, n=12, H=110). Output suffix A/B/C/D = PNP NO / PNP NC / NPN NO / NPN NC.
K (mm)
Beams n
Protective Height H (mm)
Overall Length L (mm)
Model Example
Range
10
12
110
123.5
DQO12/10-110
0.3–3 m
10
14
130
143.5
DQO14/10-130
0.3–3 m
10
16
150
163.5
DQO16/10-150
0.3–3 m
10
18
170
183.5
DQO18/10-170
0.3–3 m
10
20
190
203.5
DQO20/10-190
0.3–3 m
10
22
210
223.5
DQO22/10-210
0.3–3 m
10
24
230
243.5
DQO24/10-230
0.3–3 m
10
26
250
263.5
DQO26/10-250
0.3–3 m
10
28
270
283.5
DQO28/10-270
0.3–3 m
10
30
290
303.5
DQO30/10-290
0.3–3 m
10
32
310
323.5
DQO32/10-310
0.3–3 m
10
34
330
343.5
DQO34/10-330
0.3–3 m
10
36
350
363.5
DQO36/10-350
0.3–3 m
10
38
370
383.5
DQO38/10-370
0.3–3 m
10
40
390
403.5
DQO40/10-390
0.3–3 m
10
42
410
423.5
DQO42/10-410
0.3–3 m
10
44
430
443.5
DQO44/10-430
0.3–3 m
10
46
450
463.5
DQO46/10-450
0.3–3 m
10
48
470
483.5
DQO48/10-470
0.3–3 m
10
50
490
503.5
DQO50/10-490
0.3–3 m
10
52
510
523.5
DQO52/10-510
0.3–3 m
10
54
530
543.5
DQO54/10-530
0.3–3 m
10
56
550
563.5
DQO56/10-550
0.3–3 m
10
58
570
583.5
DQO58/10-570
0.3–3 m
10
60
590
603.5
DQO60/10-590
0.3–3 m
10
62
610
623.5
DQO62/10-610
0.3–3 m
10
64
630
643.5
DQO64/10-630
0.3–3 m
10
66
650
663.5
DQO66/10-650
0.3–3 m
10
68
670
683.5
DQO68/10-670
0.3–3 m
10
70
690
703.5
DQO70/10-690
0.3–3 m
For 0.3–6 m builds, specify on order. Keep the model format DQOnn/K-H. Add A/B/C/D for output type (PNP NO / PNP NC / NPN NO / NPN NC).
Typical Applications
Presses / press brakes / shears: 10–20 mm for finger/hand protection; shorter safety distance with fast stop.
Assembly fixtures & robotics periphery: high resolution with interlocked safety loop and EDM.
Packaging / logistics: 30 mm for aisle and perimeter guarding.
Safety distance reference (ISO 13855): S = K × T + C, where T is machine stopping time.
Installation Method
Mounting options: side-mount (default), end-mount, tubular mount. Use M12 aviation plugs; align emitter/receiver and verify blind-spot-free window alignment with the hazard.
Resolution map: 10 mm (finger), 20 mm (hand), 30 mm (arm/body). Protective height equals the sensing window from the top beam to the bottom beam.
Working Principle
DQO forms a synchronized array of infrared beams between the emitter and receiver. When any beam is interrupted, the internal safety logic switches OSSD outputs to OFF, and the connected safety relay/PLC removes motive power. The blind-spot-free window ensures coverage up to the end caps.
Emission & reception: modulated IR LED; receiver filters spurious light.
Optical synchronization: maintains sequence without extra sync wire.
