DQC General Safety Light Curtain

Name: DQC General Safety Light Curtain
Brand: DAIDISIKE
SKU: dqc-general-safety-light-curtain

General-purpose through-beam safety light curtain for presses, hydraulic and shearing machines and automatic doors — a transmitter/receiver pair in 8 beam pitches from 10 to 200 mm, standard sensing distance 0.3-3 m or 0.3-6 m, with NPN or PNP output. Catalogue-stated Type 4 / Category 4 design basis; verify the exact configuration's applicable safety documentation.

▶ Watch it in action: Installing a Safety Light Curtain on a Punch Press — Mounting, Alignment & Test

DQC General Safety Light Curtain - product photo

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Technical Specifications

Curtain Type	Through-beam (opposed mode) — separate transmitter and receiver
Safety Design Basis	Catalogue-stated Type 4 / Category 4 design basis, with references to IEC 61496-1/-3, EN 61496-3:2019 and ISO/EN 13849-1. Applicable ESPE certificate and standard-part scope require confirmation for the exact configuration; an EMC certificate is not a machine-safety certificate.
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 / 14 / 20 / 25 / 30 / 40 / 80 / 200 mm
Detection Accuracy (min. detectable object)	18 / 22 / 28 / 33 / 38 / 48 / 88 / 208 mm (= beam pitch + 8 mm)
Number of Beams	6, 8 … 32 (10/14/25 mm pitch); 4, 6 … 32 (20/30/40/80 mm); 4, 6 … 20 (200 mm)
Protected Height	Beam pitch x (number of beams - 1)
Sensing Distance	0.3-3 m (code A) or 0.3-6 m (code B), equivalent to 300-3000 mm and 300-6000 mm respectively.
Response Time	<= 15 ms
Ambient Light Immunity	10,000 lux (incidence angle >= 5 degrees)
Dimensions	30 x 30 mm x L (L = transmitter / receiver length)
Enclosure Rating	IP65
Controller	DQCA / DQCA2
Supply Voltage	DC 12/24 V; AC 110-220 V (relay-output version)
Current Consumption	<= 200 mA
Output	NPN / PNP type, sink current 500 mA, residual voltage < 1.5 V, with polarity, short-circuit and overload protection
Output State	The catalogue describes ON with beams clear (green receiver indicator); ordered NO/NC variants must be checked against their own wiring and output-state table. Do not apply one logic state to every order code.
Indicators	Transmitter: power (red). Receiver: output — clear (green) / blocked (red)
Light Source	Modulated infrared LED
Connection	Circular aviation connector with dedicated cable; transmitter 4-core, receiver 5-core
Housing Material	Aluminium alloy; end caps ABS-reinforced nylon
Ambient Light Tolerance	Incandescent: 3,000 lux at receiver face; sunlight: 10,000 lux at receiver face
Operating Temperature	-10 to +40 degrees C (non-condensing); storage -25 to +55 degrees C
Ambient Humidity	Operating 35-85% RH; storage 35-95% RH

Overview

The DQC is DAIDISIKE's general-purpose through-beam (opposed-mode) safety light curtain: a separate transmitter and receiver project modulated infrared beams across a machine opening. Detection changes the output; stopping hazardous motion depends on the connected, validated machine-safety circuit. The catalogue positions DQC for presses, hydraulic and oil presses, shearing machines, automatic doors and other point-of-operation or access-guarding applications. It states a Type 4 / Category 4 design basis and cites IEC 61496-1/-3, EN 61496-3:2019 and EN 13849-1:2015. Those catalogue references are not proof of an applicable ESPE safety certificate; request the exact configuration's safety documentation before personnel-protection specification.

The DQC is the standard-range member of the family: sensing distance is 0.3-3 m (code A) or 0.3-6 m (code B). Where a span longer than 6 m is needed, the long-range DQA (selectable up to 0.3-40 m) takes over on the same optical platform. The DQC is configured from 4 to 32 beam axes across eight pitch steps — 10, 14, 20, 25, 30, 40, 80 and 200 mm — and installations needing more than 32 axes move to the DQT series (up to 72 axes).

The 30 x 30 mm aluminium housing is rated IP65. The catalogue describes continuous self-checking and ambient-light rejection to 10,000 lux at an incidence angle of 5 degrees or more; the scope of fault detection and the resulting output state must be verified against the exact configuration's safety documentation, not treated as an unconditional guarantee for every fault. Output is NPN or PNP with NO/NC logic selected by model code. The listed transmitter 4-core and receiver 5-core connection is a wiring configuration, not a substitute for checking the ordered version's pinout and synchronization requirements.

Key Facts — DQC at a glance

The catalogue states a Type 4 / Category 4 design basis and cites IEC 61496-1/-3 and ISO 13849-1. Treat this as a catalogue claim pending the applicable ESPE safety documentation; the separately listed EMC certificate does not establish the personnel-protection function.
The DQC 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 DQC standard sensing distance is 0.3-3 m (model code A) or 0.3-6 m (model code B); for longer spans the DAIDISIKE DQA long-range curtain covers 0.3-40 m on the same platform.
The DQC offers eight beam pitches — 10, 14, 20, 25, 30, 40, 80 and 200 mm — with a corresponding detection accuracy (minimum detectable object) of 18, 22, 28, 33, 38, 48, 88 and 208 mm (pitch + 8 mm).
The DQC response time is 15 ms or less, and it rejects ambient light up to 10,000 lux at an incidence angle of 5 degrees or greater.
The DQC protected height equals beam pitch multiplied by (number of beams - 1); model numbers run from 4 to 32 beam axes, and installations needing more than 32 axes use the DQT series (up to 72 axes).
The DQC 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), with sink current 500 mA, residual voltage under 1.5 V, and polarity, short-circuit and overload protection.
The DQC runs on DC 12/24 V, or AC 110-220 V on the relay-output version, drawing 200 mA or less, in a compact 30 x 30 mm aluminium housing rated IP65 over an operating range of -10 to +40 degrees C (non-condensing).

Features & Benefits

Eight beam pitches, one series

Eight beam-pitch options cover different opening sizes. Beam pitch is not detection capability: the published minimum detectable objects are 18/22/28/33/38/48/88/208 mm for 10/14/20/25/30/40/80/200 mm pitch respectively. Select against the required object size and validated machine-safety design, not pitch alone.

Transparent part numbering

The DQC + beam count + "/" + pitch + "-" + protective height format identifies those selection fields, with protective heights from 50 mm up to 3800 mm. Use the dimension drawing separately for overall housing length, end offsets, brackets and mounting-hole positions.

Transistor output, NPN or PNP

The wiring examples shown on this page depict NPN single- and dual-output configurations; PNP is also listed as a family option. Confirm the complete order code and pinout for the supplied version. An NPN sinking output requires a compatible sourcing PLC input, while a PNP sourcing output requires a compatible sinking input. PLC brand or country of origin does not determine the output, and two outputs alone do not establish safety-rated OSSD capability.

≤15 ms response time

A response time of ≤15 ms is a mainstream industry level; per the ISO 13855 minimum-distance formula, a faster response allows the light curtain to be mounted closer to the hazard point, reducing the machine's footprint.

0.3–3 m range, 0.3–6 m on request

The standard sensing range covers most press and molding-machine openings, with a 0.3–6 m option available for wider perimeter or conveyor-line openings.

DC12/24V with AC110-220V retrofit option

Native DC12/24V power supply, with an external controller option enabling AC110–220V input, making the light curtain suitable for retrofitting older machines without a compatible low-voltage supply already on hand.

IP65 housing

The catalogue lists an IP65 housing. Confirm the selected assembly's environmental limits, connector seals and material compatibility; an IP rating alone does not establish resistance to oil mist, cleaning chemicals or high-pressure washing.

Complete mounting-bracket system

The DQCA accessory series (DQCA-02/04/05 included as standard, DQCA-01/03 available as options) provides a ready mounting solution rather than requiring the customer to source brackets separately.

Applications

Press, stamping press, and shearing machine point-of-operation guarding — The 10–25 mm pitch models have published minimum detectable objects of 18, 22, 28 and 33 mm. Match that detection capability, protective height and total stopping time to the press risk assessment; these are not 10 mm or 14 mm finger-detection ratings.

Injection and die-casting machine mold-area guarding — Mid-pitch models (20–40 mm) match the opening sizes typical of mold-clamping areas on molding equipment.

Robot cell and automated loading/unloading station entry detection — The 30–40 mm pitch options provide published minimum detectable objects of 38–48 mm. Use only where that capability and the protective-field layout satisfy the loading/unloading opening's assessed requirements.

Conveyor line entry/exit and fence-opening access detection — 80/200 mm sparse-pitch models cover large openings economically where whole-body, not finger-level, detection is required.

Safety retrofits on older machines lacking a DC low-voltage supply — The AC110–220V controller option lets the light curtain be added to legacy machines without rewiring for a new low-voltage circuit.

Mixed-PLC production lines — Selectable NPN/PNP transistor output avoids needing a separate interposing relay when integrating with existing PLC wiring on equipment fleets that mix sourcing- and sinking-type PLC inputs.

Models & Ordering Information

111 listed table entries across 8 beam-pitch options. Compare beam count and span, then confirm the complete ordering code. Beam pitch alone does not establish detection capability or suitability for personnel protection.

10 mm beam pitch; published minimum detectable object 18 mm, not 10 mm or 14 mm finger detection.

DQC General Safety Light Curtain — 10 mm beam pitch, 14 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC06/10-50	10	6	50
DQC08/10-70	10	8	70
DQC10/10-90	10	10	90
DQC12/10-110	10	12	110
DQC14/10-130	10	14	130
DQC16/10-150	10	16	150
DQC18/10-170	10	18	170
DQC20/10-190	10	20	190
DQC22/10-210	10	22	210
DQC24/10-230	10	24	230
DQC26/10-250	10	26	250
DQC28/10-270	10	28	270
DQC30/10-290	10	30	290
DQC32/10-310	10	32	310

DQC General Safety Light Curtain — 14 mm beam pitch, 14 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC06/14-70	14	6	70
DQC08/14-98	14	8	98
DQC10/14-126	14	10	126
DQC12/14-154	14	12	154
DQC14/14-182	14	14	182
DQC16/14-210	14	16	210
DQC18/14-238	14	18	238
DQC20/14-266	14	20	266
DQC22/14-294	14	22	294
DQC24/14-322	14	24	322
DQC26/14-350	14	26	350
DQC28/14-378	14	28	378
DQC30/14-406	14	30	406
DQC32/14-434	14	32	434

DQC General Safety Light Curtain — 20 mm beam pitch, 15 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC04/20-60	20	4	60
DQC06/20-100	20	6	100
DQC08/20-140	20	8	140
DQC10/20-180	20	10	180
DQC12/20-220	20	12	220
DQC14/20-260	20	14	260
DQC16/20-300	20	16	300
DQC18/20-340	20	18	340
DQC20/20-380	20	20	380
DQC22/20-420	20	22	420
DQC24/20-460	20	24	460
DQC26/20-500	20	26	500
DQC28/20-540	20	28	540
DQC30/20-580	20	30	580
DQC32/20-620	20	32	620

DQC General Safety Light Curtain — 25 mm beam pitch, 14 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC06/25-125	25	6	125
DQC08/25-175	25	8	175
DQC10/25-225	25	10	225
DQC12/25-275	25	12	275
DQC14/25-325	25	14	325
DQC16/25-375	25	16	375
DQC18/25-425	25	18	425
DQC20/25-475	25	20	475
DQC22/25-525	25	22	525
DQC24/25-575	25	24	575
DQC26/25-625	25	26	625
DQC28/25-675	25	28	675
DQC30/25-725	25	30	725
DQC32/25-775	25	32	775

DQC General Safety Light Curtain — 30 mm beam pitch, 15 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC04/30-90	30	4	90
DQC06/30-150	30	6	150
DQC08/30-210	30	8	210
DQC10/30-270	30	10	270
DQC12/30-330	30	12	330
DQC14/30-390	30	14	390
DQC16/30-450	30	16	450
DQC18/30-510	30	18	510
DQC20/30-570	30	20	570
DQC22/30-630	30	22	630
DQC24/30-690	30	24	690
DQC26/30-750	30	26	750
DQC28/30-810	30	28	810
DQC30/30-870	30	30	870
DQC32/30-930	30	32	930

DQC General Safety Light Curtain — 40 mm beam pitch, 15 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC04/40-120	40	4	120
DQC06/40-200	40	6	200
DQC08/40-280	40	8	280
DQC10/40-360	40	10	360
DQC12/40-440	40	12	440
DQC14/40-520	40	14	520
DQC16/40-600	40	16	600
DQC18/40-680	40	18	680
DQC20/40-760	40	20	760
DQC22/40-840	40	22	840
DQC24/40-920	40	24	920
DQC26/40-1000	40	26	1000
DQC28/40-1080	40	28	1080
DQC30/40-1160	40	30	1160
DQC32/40-1240	40	32	1240

DQC General Safety Light Curtain — 80 mm beam pitch, 15 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC04/80-240	80	4	240
DQC06/80-400	80	6	400
DQC08/80-560	80	8	560
DQC10/80-720	80	10	720
DQC12/80-880	80	12	880
DQC14/80-1040	80	14	1040
DQC16/80-1200	80	16	1200
DQC18/80-1360	80	18	1360
DQC20/80-1520	80	20	1520
DQC22/80-1680	80	22	1680
DQC24/80-1840	80	24	1840
DQC26/80-2000	80	26	2000
DQC28/80-2160	80	28	2160
DQC30/80-2320	80	30	2320
DQC32/80-2480	80	32	2480

DQC General Safety Light Curtain — 200 mm beam pitch, 9 listed entries
Listed model entry	Beam pitch K (mm)	Number of beams N	Beam span H (mm)
DQC04/200-600	200	4	600
DQC06/200-1000	200	6	1000
DQC08/200-1400	200	8	1400
DQC10/200-1800	200	10	1800
DQC12/200-2200	200	12	2200
DQC14/200-2600	200	14	2600
DQC16/200-3000	200	16	3000
DQC18/200-3400	200	18	3400
DQC20/200-3800	200	20	3800

14 listed entries at 10 mm pitch · 111 across this table. Beam span is calculated as H = (N − 1) × K; it is not overall housing length or proof of detection capability. Some entries expand catalogue ranges. Confirm the complete ordering code and availability before ordering; inclusion is not a stock claim.

How to read the DQC model code

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

DQC = series. [beams] = 04, 06, 08, 10 … 32. [pitch] = 10/14/20/25/30/40/80/200 mm. [protected height] in mm = pitch x (beams - 1). [output groups] = blank for one group, 2 for two groups. [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: DQC08/40-280 1 A A = 8 beams, 40 mm pitch, 280 mm protected height, single output, NPN NC, 0.3-3 m sensing distance.

Beam pitch and published detection capability

10 / 14 mm pitch: 18 / 22 mm minimum detectable object20 / 25 mm pitch: 28 / 33 mm minimum detectable object30 / 40 / 80 / 200 mm pitch: 38 / 48 / 88 / 208 mm minimum detectable object

These values describe detection capability, not an automatic approval for a body-part protection task. The finest DQC configuration detects an 18 mm object; a requirement for 14 mm detection needs a different, documented configuration or series.

PDF & 3D CAD Downloads

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DQC Safety Light Curtain Series Brochure

English · 2.0 MB

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How to Select

Start with the minimum detectable object required by the risk assessment. DQC's 10/14 mm pitches correspond to 18/22 mm detection capability, not 10/14 mm finger detection.
Compare the other published pairs before choosing a model: 20/25/30/40/80/200 mm pitch corresponds to 28/33/38/48/88/208 mm minimum detectable object. Also validate protective height, reach-over/reach-under access, stopping time and the complete safety circuit.
Use 40 mm for general access-point detection.
Use 80/200 mm for whole-body or large-opening perimeter access detection at the lowest cost per beam.
Choose protective height to match the guarded opening: protective height = (number of beams − 1) × pitch.
Confirm operating range: standard 0.3–3 m covers most single-machine openings; specify the 0.3–6 m custom range for wider spans such as long conveyor or fence openings.
Select the output using the actual PLC/controller input circuit: NPN sinking sensor output connects to a compatible sourcing input; PNP sourcing sensor output connects to a compatible sinking input. This page's wiring examples show NPN; confirm a PNP order against its complete model code and pinout. Verify common terminal, voltage and NO/NC logic against both devices' diagrams, and do not infer safety-rated OSSD from a dual-output drawing alone.
Select cable core count and pinout from the ordered output and synchronization configuration's wiring diagram, not cable-routing preference. Confirm the transmitter/receiver connection, supply and any controller requirement; use the documented external controller arrangement where the installation has only AC110–220V rather than assuming direct AC connection to the curtain.
Add mounting accessories: DQCA-02/04/05 are included as standard; add DQCA-01 and/or DQCA-03 if the installation requires the optional mounting configurations they support.

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

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

The transmitter-to-receiver span exceeds 6 m

Why not: The DQC standard sensing distance tops out at 0.3-6 m (code B). Beyond that the beams do not reliably reach the receiver.

Use instead: The DQA long-range safety light curtain, which is the same platform with sensing distance selectable up to 0.3-40 m.

You need true 14 mm finger detection capability

Why not: The finest DQC 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, even though the catalog labels the 10/14 mm pitches as finger protection.

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 DQC housing is rated IP65 — dust-tight and protected against low-pressure water jets, but not high-pressure jetting or immersion.

Use instead: Evaluate a DQR configuration only after confirming the exact assembly against the actual water pressure, temperature, cleaning chemicals and connector/seal conditions. A waterproof family name or IP label alone does not establish high-pressure-washdown suitability.

Very shallow mounting depth or a slim frame profile

Why not: The DQC housing is 30 x 30 mm. Where the guard frame is too shallow to take a 30 mm profile, it will not fit.

Use instead: An ultra-thin series — DQZ (front face 17.2 mm) or DQB (side-emitting ultra-thin) — where mounting space is tight.

More than 32 beam axes are needed for the protected height

Why not: DQC model numbers stop at 32 beam axes; a taller field at a given pitch needs more axes than the DQC provides.

Use instead: The DQT series, which extends the same platform to 72 beam axes.

Ambient temperature outside -10 to +40 degrees C, or condensing conditions

Why not: The DQC operating range is -10 to +40 degrees C, non-condensing. Outside that band, or where the optical faces can condense or ice, detection is not guaranteed.

Use instead: A heated or sheltered enclosure that holds the curtain within spec, or confirm a wide-temperature option with us.

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 DQC 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.
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.
The difference between the DQCA and DQCA2 controllers, and which configurations require an external controller.
Muting and fixed / floating blanking function availability and configuration.
Cable length options and the aviation-connector pinout.
Whether a relay-output (J) variant is offered on the DQC as on the DQA, and its contact rating.

Frequently Asked Questions

What beam pitches does the DQC safety light curtain series offer?

Eight beam-pitch options: 10, 14, 20, 25, 30, 40, 80, and 200 mm.

How is the DQC model code structured?

DQC + number of beams (2 digits) + "/" + beam pitch (mm) + "-" + protective height (mm), for example DQC06/10-50. Protective height equals (number of beams − 1) × pitch.

What protective heights are available?

From 50 mm up to 3800 mm across the different pitch/beam-count combinations listed in the model table.

What is the maximum number of beams in the DQC series?

Up to 32 beams in this listed DQC group. For a larger beam count, compare the existing DQT product-page table, then confirm the exact pitch, protected height, minimum detectable object and order code with the factory.

What output type does the DQC light curtain use?

DQC uses transistor output. This page's wiring examples show NPN single- and dual-output configurations; the family selection table also lists PNP. Confirm the complete model code and exact pinout for the ordered version. A dual-output drawing by itself does not establish safety-rated OSSD capability.

What is the response time?

15 ms or less.

What is the sensing/operating range?

0.3–3 m as standard, with 0.3–6 m available on request.

What power supply does the DQC light curtain require?

DC12/24V natively; an external controller option allows AC110–220V input for retrofit installations.

What is the ingress protection rating?

IP65.

What mounting accessories are included?

DQCA-02, DQCA-04, and DQCA-05 are standard; DQCA-01 and DQCA-03 are optional.

Can you provide safety certification documents for the DQC light curtain?

Request the exact model's applicable safety documentation and configuration scope. The listed TÜV SÜD document is for EMC, not ESPE personnel-safety certification; it must not be used as proof of the catalogue's Type 4 / Category 4 claim.

Related Categories and Example Products

Explore other functions that may be needed in a machine or line. The products below are category examples, not pre-validated electrical or safety combinations. Confirm each interface and application separately: Safety Relays · Safety Door Locks & Switches · Press & Press Brake Protection