DQZ Ultra-Slim Safety Light Curtain (ESPE)

Name: DQZ Ultra-Slim Safety Light Curtain
Brand: DAIDISIKE
SKU: DQZ-SERIES

Safety light curtain — installation and operation — video thumbnail — Watch on YouTube

Product Highlights

Ultra-slim 17.2 mm front section fits tight guards and small fixtures; neat cable routing.
Self-diagnostics with short-/over-current protection and clear indicators simplify troubleshooting.
Seven beam pitches (10 to 80 mm) covering finger to body detection, in protective heights of 50–2480 mm.
Simple wiring: two 5-core cables, NPN/PNP signal selection.
DQBZ-01 mounting supplied as standard.
Through-beam AOPD designed with reference to IEC 61496 and the machinery-safety standards ISO 13849 / ISO 13855; integrate with a safety relay/PLC.

No type class (Type 2 / Type 4) or performance level is published for the DQZ series, nor a confirmed detection distance, response time, supply voltage, IP rating, operating temperature or housing material — none of these are stated on this page. Contact the factory for the confirmed values, or use the DQT4 series where a documented rating is required.

Resolution & Application Guide

Resolution (K)	Typical Application
10 / 14 mm	Finger protection (assembly, fixtures)
20 / 25 / 30 mm	Palm / hand protection, guarded access openings
40 / 80 mm	Arm/body presence, aisle and perimeter guarding

Protective height H = (n − 1) × K. Overall length L = P + H + J + 24 (12 mm allowance at each end). P/J depend on K; see the spec tabs below.

Technical Parameters (DQZ Series)

Category	Item	Typical Value / Option	Notes
Optical	Operating principle	Through-beam infrared LED, modulated	Emitter/receiver pair; anti-interference design
	Resolution (beam pitch K)	10 / 14 / 20 / 25 / 30 / 40 / 80 mm	Finger → body detection
	Protective height (H)	H = (n − 1) × K; 50–2480 mm	n = beam count
	Detection accuracy	18 / 22 / 28 / 33 / 38 / 48 mm (for 10 / 14 / 20 / 25 / 30 / 40 mm pitch)	Smallest object reliably detected
	Response time	≤ 15 ms	Catalogue value — use this in your ISO 13855 calculation
	Detection distance	0.3–3 m standard (order code A 0.3–1 m · B 0.3–2 m); 0.3–6 m build available	Catalogue table: 30–3000 mm / 30–6000 mm
Ambient light immunity	10,000 Lux (incidence angle ≥ 5°)	Incandescent 3,000 Lx / sunlight 10,000 Lx on the receiving surface
Light source	Modulated infrared LED	Catalogue: 调制红外LED
Electrical / I/O	Safety outputs	NPN / PNP transistor, 500 mA max, saturation voltage < 1.5 V; polarity, short-circuit and overload protection	Suffix A = NPN NC, B = PNP NC, C = NPN NO, D = PNP NO (A is the default)
	Wiring	Two 5-core cables	Circular aviation socket; catalogue table lists 4-core emitter + 5-core receiver
	Supply voltage	DC 12 V / 24 V; AC 110–220 V on the relay-output build	Per catalogue technical-parameter table
	Current consumption	≤ 200 mA	Per catalogue technical-parameter table
	Indicators	Emitter: power indicator (red). Receiver: output indicator green = all beams clear, red = beam blocked	Front-side LEDs
Mechanical / Environment	Body section	17.2 × 30 mm (ultra-slim front face)	Catalogue outline size 17.2 × 30 × L mm
	Housing material	Aluminium alloy body, ABS reinforced-nylon end caps	Catalogue: 铝合金，端盖 ABS 增强尼龙
	Overall length	L = P + H + J + 24	P/J depend on K
	Ingress protection	IP65	Per catalogue technical-parameter table
	Operating temp.	−10 to +40 °C (non-freezing)	Storage −25 to +55 °C
	Humidity	35–85 % RH operating	35–95 % RH storage
Compliance	Standards	Through-beam AOPD designed with reference to IEC 61496; safety distance per ISO 13855	No type class (Type 2/4) or performance level is published for this series — confirm with the factory
Compliance	System integration	Safety relay / Safety PLC	Independent dual inputs; do not tie channels together

DQZ Series Detailed Specifications

Tabs list typical beam counts (n) for each resolution (K) with protective height H and overall length L. Model format: DQZnn/K-H. Example: DQZ08/40-280 (K=40, n=8, H=280).

K (mm)	Beams n	Protective Height H (mm)	P/J (mm)	Overall Length L (mm)	Model Example	Detection Distance
10	6	50	5/32	111	DQZ06/10-50	0.3–3 m
10	8	70	5/32	131	DQZ08/10-70	0.3–3 m
10	10	90	5/32	151	DQZ10/10-90	0.3–3 m
10	12	110	5/32	171	DQZ12/10-110	0.3–3 m
10	14	130	5/32	191	DQZ14/10-130	0.3–3 m
10	16	150	5/32	211	DQZ16/10-150	0.3–3 m
10	18	170	5/32	231	DQZ18/10-170	0.3–3 m
10	20	190	5/32	251	DQZ20/10-190	0.3–3 m
10	22	210	5/32	271	DQZ22/10-210	0.3–3 m
10	24	230	5/32	291	DQZ24/10-230	0.3–3 m
10	26	250	5/32	311	DQZ26/10-250	0.3–3 m
10	28	270	5/32	331	DQZ28/10-270	0.3–3 m
10	30	290	5/32	351	DQZ30/10-290	0.3–3 m
10	32	310	5/32	371	DQZ32/10-310	0.3–3 m

Keep the model format DQZnn/K-H. The catalogue specification list gives 0.3–3 m for every standard model; 80 mm pitch and other special builds are made to order with a 0.3–2 m range.

Typical Applications

Presses / shears / press brakes: 10–30 mm suit hand protection; fast response supports shorter S-distance.
Robot cells & assembly fixtures: finger/palm detection with interlocked safety loop; compact to retrofit.
Packaging / logistics: 40–80 mm for aisle, pallet zone and presence detection.
General machinery: integrate with a safety relay/PLC for stop, interlock and EDM monitoring.

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

Frequently Asked Questions

What safety type / performance level does the DQZ carry?

The DQZ is a through-beam opto-electronic protective device (AOPD) — a product category designed with reference to IEC 61496 and to the machinery-safety standards ISO 13849 / ISO 13855. DAIDISIKE has not published a type classification (Type 2 / Type 4) or a performance level for the DQZ series, so none is claimed here; request the current test documentation from the factory before specifying the DQZ into a rated safety function. Where a documented Type 4 / PL e / SIL 3 device is required, use the DQT4 series. Whatever the device, pair it with a forcibly-guided safety relay or safety PLC providing EDM, and validate the complete function on the machine.

Which resolution do I choose for finger or hand protection?

Resolution K sets the smallest detectable object. Use 10/14 mm for finger protection on assembly and fixtures, 20/25/30 mm for palm and hand protection at guarded openings, and 40/80 mm for arm, body and perimeter presence detection. The DQZ offers all seven resolutions (10/14/20/25/30/40/80 mm) so one series covers most press, robot-cell and packaging tasks.

How does response time affect the ISO 13855 safety distance?

ISO 13855 gives S = K × T + C, where T includes the curtain response plus machine stopping time. A faster response lets you mount the curtain closer to the hazard while still stopping in time, saving floor space. The DQZ is catalogued at ≤ 15 ms, so use 0.015 s as the curtain's contribution to T. Always add the C intrusion term based on the chosen resolution and verify against your measured machine stopping time.

How do I wire the NPN/PNP outputs with EDM?

The DQZ uses transistor outputs with NPN or PNP signal selection, wired by two 5-core cables. Keep the two channels independent — never tie them together — and route both into a safety relay or safety PLC with external device monitoring (EDM) to detect contact welding. Select NPN (sinking) or PNP (sourcing) to match your controller; most modern European PLCs expect PNP.

Can the DQZ replace an Omron, SICK or Keyence safety light curtain?

In many cases yes, mechanically. With resolutions 10–80 mm, protective heights 50–2480 mm and an ultra-slim 17.2×30 mm front section, the DQZ fits brackets and cabling similar to common Omron, SICK deTec or Keyence units — and the 17.2 mm front face fits mounting channels that a 30 mm-square housing will not. Match resolution, protected height and output type to the curtain being replaced, confirm the required operating distance with the factory, and where the original carried a certified Type/PL rating confirm the equivalent documentation.

Specs reviewed by Engineer Cai, Senior Application Engineer.See certificates.