DQE Safety Light Curtain

Name: DQE Safety Light Curtain
Brand: DAIDISIKE
SKU: dqe-safety-light-curtain
Availability: InStock

Economical infrared through-beam safety light curtain for presses, hydraulic and shearing machines and automatic doors: a compact 30 x 30 mm transmitter/receiver pair in 5 beam pitches (10/20/40/80/200 mm), standard sensing distance 0.3-3 m, with NPN or PNP output. Designed to the Type 4 architecture of IEC 61496 and Category 4 of ISO 13849-1.

▶ Watch it in action: 3D Animation: How Light Curtains, Door Locks, Safety Mats & LiDAR Guard a Machine

DQE Safety Light Curtain - product photo

🔍 Click to enlarge · 1/35

Technical Specifications

Curtain Type	Infrared through-beam (opposed mode) — separate transmitter and receiver
Safety Design Basis	Type 4 architecture (IEC 61496-1/-3); Category 4 (ISO 13849-1). Catalog cites EN 61496-3:2019 Type 4, EN 13849-1:2015. Certification documents available on request.
EMC Certification	Holds TÜV SÜD Attestation of Conformity No. E8A 104143 0001 (Rev. 00) for electromagnetic compatibility under EU Directive 2014/30/EU, tested to EN 61000-6-2:2005 and EN 61000-6-4:2007/A1:2011. Certificate held by Foshan DAIDISIKE; covers the DQA, DQR, DQRF, DQC, DQZ, DQE and DQT series. (This is an EMC certificate; it does not certify the machine-safety / ESPE function.)
Beam Pitch	10 / 20 / 40 / 80 / 200 mm
Detection Accuracy (min. detectable object)	18 / 28 / 48 / 88 / 208 mm (= beam pitch + 8 mm)
Number of Beams	4-72 (10 mm: 12-70; 20 mm: 6-72; 40 mm: 4-72; 80 mm: 4-32; 200 mm: 4-20)
Protected Height	Up to 3800 mm; = beam pitch x (number of beams - 1)
Sensing Distance	0.3-3 m standard (model code A); 0.3-6 m on order (code B); longer distances made to order
Response Time	<= 15 ms
Interference Rejection	Rejects ~99% of interference (electromagnetic noise, flickering lamps, welding arcs)
Dimensions	30 x 30 mm x L (L = transmitter / receiver length)
Output	NPN / PNP, normally open or normally closed (per model code A/B/C/D)
Output Signal Groups	Single output (6-core cable) or dual output (7-core cable)
Light Source	Modulated infrared LED
Connection	M12 circular aviation connector with dedicated cable
Self-Check	Continuous self-check — a fault does not send a false clear signal
Controller	DQCA / DQCA2 (per the light-curtain catalog)
Mounting Accessories	DQCA-01 to DQCA-05 brackets (tube, slot, right-angle and side-fixing)

Overview

The DQE is DAIDISIKE's economical infrared through-beam (opposed-mode) safety light curtain: a compact 30 x 30 mm transmitter and receiver that guard a machine opening with a plane of modulated infrared beams, stopping the machine when any beam is broken. It is designed to the Type 4 architecture of IEC 61496-1 and -3 and to Category 4 of ISO 13849-1 (the catalog also cites EN 61496-3:2019 Type 4 and EN 13849-1:2015), and the catalog positions it as the compact, high-value option for presses, hydraulic and oil presses, shearing machines, automatic doors and more than 80% of equipment needing point-of-operation or access guarding.

Where the general-purpose DQC offers eight beam pitches, the DQE is streamlined to five — 10, 20, 40, 80 and 200 mm — keeping the same detection accuracy relationship (pitch + 8 mm). It is configured from 4 to 72 beam axes, with protected heights up to 3800 mm at the coarser pitches. Standard sensing distance is 0.3-3 m, with 0.3-6 m available as model code B and longer distances on request.

Output is NPN or PNP, normally open or normally closed, selected by model code, wired via a 6-core cable for a single output signal or a 7-core cable for dual output. The 30 x 30 mm aluminium housing self-checks continuously, rejects 99% of interference from electromagnetic noise, flickering lamps and welding arcs, and connects through an M12 aviation connector.

Key Facts — DQE at a glance

The DQE is designed to the Type 4 architecture of IEC 61496-1/-3 and to Category 4 of ISO 13849-1, as stated in the DAIDISIKE light-curtain catalog. Certification documents are available on request.
The DQE is covered by TÜV SÜD Attestation of Conformity No. E8A 104143 0001 for electromagnetic compatibility (EU EMC Directive 2014/30/EU), tested to EN 61000-6-2:2005 and EN 61000-6-4:2007/A1:2011.
The DQE offers five beam pitches — 10, 20, 40, 80 and 200 mm — with a corresponding detection accuracy (minimum detectable object) of 18, 28, 48, 88 and 208 mm (pitch + 8 mm).
The DQE standard sensing distance is 0.3-3 m; 0.3-6 m is available as model code B, and longer distances are made to order.
The DQE is configured from 4 to 72 beam axes, giving protected heights up to 3800 mm (for example DQE20/200-3800 = 20 beams at 200 mm pitch, 3800 mm protected height).
The DQE response time is 15 ms or less, and its self-check design ensures a fault does not send a false clear signal.
The DQE output is NPN or PNP, normally open or normally closed, selected by model code (A = NPN NC, B = PNP NC, C = NPN NO, D = PNP NO), wired via a 6-core cable for single output or a 7-core cable for dual output.
The DQE housing is a compact 30 x 30 mm aluminium profile connected through an M12 aviation connector — the same cross-section as the general-purpose DQC.

Features & Benefits

Up to 72 beams in a single curtain, spanning heights to 3800 mm

Fine 10 mm pitch reaches 70 beams (DQE70/10-690); 20 mm pitch reaches 72 beams (DQE72/20-1420); 40 mm pitch reaches protective heights up to 2840 mm; 200 mm pitch reaches up to 3800 mm — all without cascading multiple units.

Optional built-in controller (DQET) reduces cabinet wiring

Choosing a built-in-controller version (the DQE controller designation is being confirmed -- see dataGaps) integrates the control logic into the curtain, removing the need for a separate external control box and its associated cabinet wiring.

0.3-3 m standard operating range, extendable to 6 m

Standard detection range is 0.3-3 m, with special-order units available up to 6 m, giving installers more margin on wide machine openings than a 3 m-class product.

NPN/PNP selectable transistor output

The signal-output selection table offers both NPN and PNP transistor output options, giving flexibility to match different PLC/controller input types.

≤15 ms response time

A response time of 15 ms or less supports shorter minimum safety distance calculations, useful where machine mounting space is limited.

Five beam-pitch options from 10 mm to 200 mm

DQE is offered at 10, 20, 40, 80 and 200 mm beam pitch, so the detection resolution can be matched to the hazard type — from finer hand/finger detection at 10-20 mm to body/access detection at 80-200 mm.

Shares the DQCA mounting-accessory platform with the DQC series

Mounting accessories DQCA-01 through DQCA-05 are shared across the DQE and DQC series, simplifying spare-parts inventory for customers running both series.

Applications

Press brake and large-format hydraulic press hand/finger guarding — Fine beam pitch options (10-40 mm) combined with large protective heights suit the tall, wide openings typical of these machines.

Automated stamping/punching line perimeter and access guarding — NPN/PNP transistor output integrates directly with common PLC safety input configurations used on stamping lines.

Vertical storage/lift access-point opening guards — Protective heights up to 3800 mm (200 mm pitch) or 2840 mm (40 mm pitch) cover tall single-unit openings without cascading.

Long-boundary entry detection on multi-station automated lines — Beam counts up to 72 per unit at 10-20 mm pitch support fine-resolution detection along extended guarded lengths.

Installations requiring integrated control logic in tight cabinet space — An optional built-in controller (designation to be confirmed) removes the need for a separate control box, useful where cabinet space is limited.

Custom equipment needing both fine beam pitch and large protective height together — DQE's beam-pitch/height combinations (e.g. DQE72/20-1420, DQE20/200-3800) let designers avoid trading off resolution against opening height.

Models & Ordering Information

123 standard models across 5 beam-pitch options. Select the pitch your risk assessment calls for, then the protective height that covers the opening.

DQE Safety Light Curtain — 10 mm beam pitch, 30 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQE12/10-110	10	12	110
DQE14/10-130	10	14	130
DQE16/10-150	10	16	150
DQE18/10-170	10	18	170
DQE20/10-190	10	20	190
DQE22/10-210	10	22	210
DQE24/10-230	10	24	230
DQE26/10-250	10	26	250
DQE28/10-270	10	28	270
DQE30/10-290	10	30	290
DQE32/10-310	10	32	310
DQE34/10-330	10	34	330
DQE36/10-350	10	36	350
DQE38/10-370	10	38	370
DQE40/10-390	10	40	390
DQE42/10-410	10	42	410
DQE44/10-430	10	44	430
DQE46/10-450	10	46	450
DQE48/10-470	10	48	470
DQE50/10-490	10	50	490
DQE52/10-510	10	52	510
DQE54/10-530	10	54	530
DQE56/10-550	10	56	550
DQE58/10-570	10	58	570
DQE60/10-590	10	60	590
DQE62/10-610	10	62	610
DQE64/10-630	10	64	630
DQE66/10-650	10	66	650
DQE68/10-670	10	68	670
DQE70/10-690	10	70	690

DQE Safety Light Curtain — 20 mm beam pitch, 34 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQE06/20-100	20	6	100
DQE08/20-140	20	8	140
DQE10/20-180	20	10	180
DQE12/20-220	20	12	220
DQE14/20-260	20	14	260
DQE16/20-300	20	16	300
DQE18/20-340	20	18	340
DQE20/20-380	20	20	380
DQE22/20-420	20	22	420
DQE24/20-460	20	24	460
DQE26/20-500	20	26	500
DQE28/20-540	20	28	540
DQE30/20-580	20	30	580
DQE32/20-620	20	32	620
DQE34/20-660	20	34	660
DQE36/20-700	20	36	700
DQE38/20-740	20	38	740
DQE40/20-780	20	40	780
DQE42/20-820	20	42	820
DQE44/20-860	20	44	860
DQE46/20-900	20	46	900
DQE48/20-940	20	48	940
DQE50/20-980	20	50	980
DQE52/20-1020	20	52	1020
DQE54/20-1060	20	54	1060
DQE56/20-1100	20	56	1100
DQE58/20-1140	20	58	1140
DQE60/20-1180	20	60	1180
DQE62/20-1220	20	62	1220
DQE64/20-1260	20	64	1260
DQE66/20-1300	20	66	1300
DQE68/20-1340	20	68	1340
DQE70/20-1380	20	70	1380
DQE72/20-1420	20	72	1420

DQE Safety Light Curtain — 40 mm beam pitch, 35 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQE04/40-120	40	4	120
DQE06/40-200	40	6	200
DQE08/40-280	40	8	280
DQE10/40-360	40	10	360
DQE12/40-440	40	12	440
DQE14/40-520	40	14	520
DQE16/40-600	40	16	600
DQE18/40-680	40	18	680
DQE20/40-760	40	20	760
DQE22/40-840	40	22	840
DQE24/40-920	40	24	920
DQE26/40-1000	40	26	1000
DQE28/40-1080	40	28	1080
DQE30/40-1160	40	30	1160
DQE32/40-1240	40	32	1240
DQE34/40-1320	40	34	1320
DQE36/40-1400	40	36	1400
DQE38/40-1480	40	38	1480
DQE40/40-1560	40	40	1560
DQE42/40-1640	40	42	1640
DQE44/40-1720	40	44	1720
DQE46/40-1800	40	46	1800
DQE48/40-1880	40	48	1880
DQE50/40-1960	40	50	1960
DQE52/40-2040	40	52	2040
DQE54/40-2120	40	54	2120
DQE56/40-2200	40	56	2200
DQE58/40-2280	40	58	2280
DQE60/40-2360	40	60	2360
DQE62/40-2440	40	62	2440
DQE64/40-2520	40	64	2520
DQE66/40-2600	40	66	2600
DQE68/40-2680	40	68	2680
DQE70/40-2760	40	70	2760
DQE72/40-2840	40	72	2840

DQE Safety Light Curtain — 80 mm beam pitch, 15 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQE04/80-240	80	4	240
DQE06/80-400	80	6	400
DQE08/80-560	80	8	560
DQE10/80-720	80	10	720
DQE12/80-880	80	12	880
DQE14/80-1040	80	14	1040
DQE16/80-1200	80	16	1200
DQE18/80-1360	80	18	1360
DQE20/80-1520	80	20	1520
DQE22/80-1680	80	22	1680
DQE24/80-1840	80	24	1840
DQE26/80-2000	80	26	2000
DQE28/80-2160	80	28	2160
DQE30/80-2320	80	30	2320
DQE32/80-2480	80	32	2480

DQE Safety Light Curtain — 200 mm beam pitch, 9 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQE04/200-600	200	4	600
DQE06/200-1000	200	6	1000
DQE08/200-1400	200	8	1400
DQE10/200-1800	200	10	1800
DQE12/200-2200	200	12	2200
DQE14/200-2600	200	14	2600
DQE16/200-3000	200	16	3000
DQE18/200-3400	200	18	3400
DQE20/200-3800	200	20	3800

30 standard models at 10 mm pitch · 123 across the series. Protective height is derived as H = (N − 1) × K. Intermediate beam counts can usually be built to order — send the opening height you need to cover.

How to read the DQE model code

DQE [beams] / [pitch] - [protected height] [output groups] [signal] [sensing distance]

DQE = series. [beams] = 04, 06, 08 … 72. [pitch] = 10/20/40/80/200 mm. [protected height] in mm = pitch x (beams - 1). [output groups] = 1 (single) or 2 (dual); usually omitted for single. [signal] = A (NPN NC), B (PNP NC), C (NPN NO), D (PNP NO). [sensing distance] = A (0.3-3 m) or B (0.3-6 m). Example: DQE08/40-280 1 A A = 8 beams, 40 mm pitch, 280 mm protected height, single output, NPN NC, 0.3-3 m.

How the DQE differs from the DQC

DQE = 5 pitches, 6/7-core wiringDQC = 8 pitches, 4/5-core wiring

The DQE is the economical, streamlined member of the same 30 x 30 mm through-beam platform as the DQC. It offers five beam pitches (10/20/40/80/200 mm) instead of the DQC's eight, and wires via a 6-core (single output) or 7-core (dual output) cable rather than the DQC's 4-core / 5-core. Both are designed to Type 4 / Category 4 and share the <= 15 ms response time.

How to Select

Choose beam pitch by hazard type: 10 mm or 20 mm for finger/hand-level detection (e.g. near-hand zones on press brakes and stamping machines); 40 mm or 80 mm for arm/limb-level detection; 200 mm for body/access-level entry detection, typically paired with larger protective heights.
Choose protective height/model by opening dimension using the naming rule DQE + beam count (2 digits) + / + beam pitch (mm) + - + protective height (mm) — e.g. DQE70/10-690 is 10 mm pitch, 70 beams, 690 mm protective height; DQE20/200-3800 is 200 mm pitch, 20 beams, 3800 mm protective height.
Choose output type from the transistor output signal-output selection table (NPN or PNP) to match your PLC/controller input type; select a built-in-controller version (designation to be confirmed) if you need to reduce external cabinet wiring.
Verify the standard 0.3-3 m detection range against machine opening width; ask about special-order units up to 6 m if extra margin is needed.
Confirm wiring (six-core or dual seven-core) and mounting accessories (DQCA-01 through DQCA-05, shared with the DQC series) before ordering.

📘 Need the full method? How to Choose a Safety Light Curtain · Type 2 vs Type 4 Safety Light Curtains

When NOT to specify the DQE — and what to use instead

You need a beam pitch of 14, 25 or 30 mm

Why not: The DQE is streamlined to five pitches — 10, 20, 40, 80 and 200 mm. The intermediate 14, 25 and 30 mm pitches are not offered on the DQE.

Use instead: The general-purpose DQC, which offers all eight pitches (10/14/20/25/30/40/80/200 mm).

The transmitter-to-receiver span exceeds 6 m

Why not: The DQE standard sensing distance is 0.3-3 m, with 0.3-6 m as code B. Beyond 6 m the beams do not reliably reach the receiver.

Use instead: The DQA long-range safety light curtain, selectable up to 0.3-40 m on the same optical principle.

You need true 14 mm finger detection capability

Why not: The finest DQE pitch is 10 mm, but its detection accuracy — the minimum object it reliably detects — is 18 mm (pitch + 8 mm), a hand-level rather than a strict 14 mm finger figure.

Use instead: Confirm the required detection capability against your ISO 13855 risk assessment; ask us for a finer-resolution series if 14 mm finger detection is mandatory.

Washdown, high-pressure hosing or wet environments

Why not: The DQE is an economical through-beam curtain for general industrial use; its published data does not cover high-pressure jetting or immersion.

Use instead: The DQR waterproof safety light curtain series for wet or washdown areas.

You need a volt-free relay output

Why not: The DQE output is NPN or PNP solid-state (per model code A/B/C/D). No relay-output code is listed for the DQE.

Use instead: The DQC or DQA (which list a relay-output J code), or add an external safety relay such as DA31 or DQSRN to provide volt-free contacts.

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

PFHd, MTTFd and DCavg figures needed to integrate the DQE into a full ISO 13849-1 machine calculation. The catalog states Category 4 but does not publish these numbers.
Safety-distance calculation guidance (ISO 13855) and the exact response time per beam count — the catalog gives only the <= 15 ms maximum.
IP enclosure rating, supply voltage, current consumption, operating temperature and humidity are not separately restated on the DQE catalog page; the DQC page of the same 30 mm through-beam platform lists IP65, DC 12/24 V, <= 200 mA and -10 to +40 degrees C — confirm these apply to the DQE before designing them in.
Controller pairing: the current catalog lists the DQCA / DQCA2 controller; if your documentation references a DQET controller, ask us to confirm before ordering
Machine-safety (ESPE) certification: the TÜV SÜD certificate on file (E8A 104143 0001) covers EMC (Directive 2014/30/EU) only. An IEC 61496 EU-Type Examination certificate from a notified body — the document that would substantiate a Type 4 / Category 4 safety-function claim — and any UL listing are not yet on hand. Certification documents available on request.
Muting and blanking function availability.
Cable length options and the aviation-connector pinout.

Frequently Asked Questions

What beam-pitch options does the DQE safety light curtain series offer?

DQE is offered at five beam pitches — 10 mm, 20 mm, 40 mm, 80 mm and 200 mm — with beam count and protective height varying by model, as listed in the product's model list.

What is the maximum number of beams in a single DQE unit?

At 10 mm pitch, the largest model is DQE70/10-690 (70 beams); at 20 mm pitch, the largest is DQE72/20-1420 (72 beams).

What is the maximum protective height available in the DQE series?

The 200 mm pitch range reaches up to DQE20/200-3800, a protective height of 3800 mm; the 40 mm pitch range reaches up to DQE72/40-2840, a protective height of 2840 mm.

What is the standard detection (operating) range of DQE?

The standard operating range is 0.3-3 m. Special-order units are available up to 6 m.

What is the response time of the DQE safety light curtain?

Response time is ≤15 ms.

Does DQE support a built-in controller, or is an external controller required?

DQE can be ordered with an optional built-in controller (DQET version), which integrates the control logic into the curtain and removes the need for a separate external control box. A standard version without the built-in controller is also available.

What output types does DQE support — NPN or PNP?

DQE uses transistor output; the manual's signal-output selection table lists both NPN and PNP options.

What wiring configuration does DQE use?

DQE uses six-core or dual seven-core cable wiring.

How is a DQE model number structured?

The model number follows: DQE + beam count (2 digits) + / + beam pitch (mm) + - + protective height (mm). For example, DQE12/10-110 is a 12-beam, 10 mm pitch, 110 mm protective-height unit.

What mounting accessories are available for DQE?

Mounting accessories DQCA-01 through DQCA-05 are available and are shared with the DQC series.

How is DQE different from the DQC series?

DQC tops out at 32 beams per unit. DQE extends to 70-72 beams per unit at 10-20 mm pitch and offers an optional built-in controller (DQET) that DQC does not.

Can DQE safety light curtains be supplied with certification documents?

Certification documents are available on request.