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.
If any discrepancy with delivered datasheets/certificates, official documents prevail.
Resolution & Application Guide
Resolution (K)
Typical Application
10 / 14 mm
Finger protection (assembly, fixtures, close guarding)
20 / 25 mm
Palm protection (access openings on presses/packaging)
30 / 40 / 80 mm
Hand-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)
Category
Item
Typical Value / Option
Notes
Optical
Operating principle
Through-beam IR LED, modulated
Emitter/receiver pair
Resolution (K)
10 / 14 / 20 / 25 / 30 / 40 / 80 mm
Finger → Body
Protective height (H)
H = (n−1) × K
n = beam count
Response time
≤ 10 ms
Varies with n
Ambient light immunity
≥ 10,000 Lux
Incidence ≥ 5°
Sensing range
0.3–3 m (std); options 0.3–6/10/15/25/30/40 m
Coding A..H per datasheet
Electrical / I/O
Sensor supply
DC 12/24 V
Reverse/over-voltage protected
Controller supply
AC 110–220 V ±15% 50/60 Hz
For external controllers
Current consumption
≤ 200 mA (sensor)
Typical
Outputs
Dual relay (controller) / NPN / PNP options
EDM available on selected controllers
Indicators
TX: Power (red); RX: Output (green), Blocked (red)
Front LEDs
Synchronization
Wired
Best immunity for presses/robots
Connectors
Aviation / M12
Quick install
Mechanical / Environment
Body section
≈35 × 51 mm
Aluminum body, reinforced caps
Overall length
L = P + H + J + 36
P/J from dimension table
Ingress protection
IP65
Dust-tight, water-jet resistant
Operating temp.
−10 ~ +40 °C (non-icing)
Storage −25 ~ +55 °C
Humidity
35–85 %RH (oper.)
Up to 95 %RH (storage)
Compliance
Standards
IEC 61496-1/-2; EN 61496-3:2019 TYPE 4
Safety distance per ISO 13855
Conformity
CE-marked for EU market; tested to relevant standards (specific third-party certificates available on request)
Refer to delivered documents
Controller family
DQSW / DQSN / DQSS / DQSP
External / 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 n
Protective Height H (mm)
P/J (mm)
Overall Length L (mm)
Model Example
Range
10
6
50
5/32
123
DQS06/10-50
0.3–3 m (std)
10
8
70
5/32
143
DQS08/10-70
0.3–3 m (std)
10
10
90
5/32
163
DQS10/10-90
0.3–3 m (std)
10
12
110
5/32
183
DQS12/10-110
0.3–3 m (std)
10
14
130
5/32
203
DQS14/10-130
0.3–3 m (std)
10
16
150
5/32
223
DQS16/10-150
0.3–3 m (std)
10
18
170
5/32
243
DQS18/10-170
0.3–3 m (std)
10
20
190
5/32
263
DQS20/10-190
0.3–3 m (std)
10
22
210
5/32
283
DQS22/10-210
0.3–3 m (std)
10
24
230
5/32
303
DQS24/10-230
0.3–3 m (std)
10
26
250
5/32
323
DQS26/10-250
0.3–3 m (std)
10
28
270
5/32
343
DQS28/10-270
0.3–3 m (std)
10
30
290
5/32
363
DQS30/10-290
0.3–3 m (std)
10
32
310
5/32
383
DQS32/10-310
0.3–3 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.
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.
Frequently Asked Questions
Is the DQS a Type 4 safety light curtain and what PL can it reach?
The DQS is built to IEC 61496-1/-2 Type 4 architecture with dual-channel outputs and self-diagnosis. When paired with a suitable safety relay or safety PLC providing EDM, the guarding function can reach PL e / SIL 3. Always validate the complete safety function in your application against the machine's risk assessment.
Which resolution should I pick — 14 mm finger or larger?
Choose by the body part you must detect. 10/14 mm gives finger protection for close press and fixture guarding; 20/25 mm covers hand/palm access openings; 30/40/80 mm suits hand-arm or whole-body presence and aisle guarding. Protective height follows H = (n − 1) × K, where K is the resolution and n the beam count.
How do I calculate the safety mounting distance for the DQS?
Use ISO 13855: S = K × T + C. K is the approach speed constant (2000 mm/s for hand approach), T is the total stopping time of the machine plus the curtain's ≤10 ms response, and C is an intrusion factor based on the 14 mm or coarser resolution. The fast ≤10 ms response helps keep the required safety distance short.
Can the DQS replace an Omron, SICK or Keyence press light curtain?
In most cases yes. The DQS offers comparable Type 4 protection, 10–80 mm resolutions, 0.3–3 m standard range (options to 40 m), ≤10 ms response and IP65, with aviation/M12 connection and NPN/PNP or dual-relay controller outputs. Match the protective height, resolution and output type to the unit being replaced and confirm wiring with the controller datasheet.
What environmental and EMC protection does the DQS provide?
The DQS has an IP65 dust-tight, water-jet-resistant aluminium body rated for −10 to +40 °C operation, with ≥10,000 Lux ambient light immunity and filtering against flicker, strobe and welding arc. This strong EMC immunity makes it well suited to presses, shears and welding lines where electrical noise and bright light are common.
