DLD05A3 2D TOF Obstacle-avoidance LiDAR (5 m)

Name: DLD05A3 2D TOF Obstacle-avoidance LiDAR (5 m)
Brand: DAIDISIKE
SKU: dld05a3-2d-tof-obstacle-avoidance-lidar
Availability: InStock

2D TOF LiDAR with NPN/PNP switching outputs that wires like a photoelectric sensor — no protocol stack, no SDK.

DLD05A3 2D TOF Obstacle-avoidance LiDAR (5 m) - product photo

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Technical Specifications

Model	DLD05A3-3N / DLD05A3-3P
Output Type	DLD05A3-3N: NPN switching output ×3 + device status indicator ×1; DLD05A3-3P: PNP switching output ×3 + status ×1
Switching Output Capacity	DC30V 50mA MAX
Detection Range	0.05-5m
Scanning Angle	270°
Scan Frequency	15/30Hz
Angular Resolution	0.1° / 0.3°
Detection Accuracy	±30mm
Laser	905nm, Class I
Operating Voltage	DC9-28V
Debug Interface	Micro-USB
Output Interface	DB15 MALE / flying leads
Ingress Protection	IP65
Zone Sets	16 zone sets (3 zones per set)
Dimensions	50×50×76mm
Weight	150g

Overview

The DLD05A3 is a compact 2D Time-of-Flight laser scanner that measures distance across a 270° field and converts the result into discrete switching outputs instead of raw point-cloud data over a fieldbus. It is built for machine and vehicle builders who need wide-angle obstacle detection but do not have a software team to parse LiDAR data streams.

Available as DLD05A3-3N (NPN sinking) or DLD05A3-3P (PNP sourcing), the sensor outputs 3 discrete switching signals plus 1 status signal, driven up to DC30V/50mA. Detection range is 0.05–5 m across the 270° field with ±30 mm accuracy, and 16 storable zone sets (3 detection zones each) let the 3 outputs implement a warning/slow-down/stop sequence that can be switched on the fly.

Features & Benefits

Wires like a photoelectric sensor

Outputs are 3 discrete switching signals (NPN or PNP) plus 1 status signal, driven up to DC30V/50mA. There is no point-cloud parsing, no protocol stack, and no SDK — the detection result goes straight into a PLC input.

NPN and PNP versions for both control architectures

DLD05A3-3N (NPN sinking) suits Japanese-style PLC conventions, while DLD05A3-3P (PNP sourcing) suits European-style conventions. One product family covers both electrical architectures.

3 outputs, 3 nested zones, 16 storable zone sets

Each of the 16 zone sets defines 3 detection zones, letting the 3 discrete outputs implement a hard-wired warning / slow-down / stop sequence. Zone sets can be switched as vehicle conditions change, such as straight travel versus turning.

0.05 m minimum detection range

Detection starts from just 0.05 m, minimizing the near-field blind zone left by many scanners close to the housing — useful for docking or narrow-aisle situations where obstacles can be very close to the sensor.

0.1°/0.3° angular resolution at 15/30 Hz

At 0.1° resolution, the angular point spacing at 5 m is under 9 mm, and the 15/30 Hz scan-frequency options let integrators trade responsiveness against resolution.

USB configuration, standalone operation

The 16 zone sets are configured once over Micro-USB; the sensor then runs fully standalone in the field and does not occupy any of the host machine's communication resources during operation. The output/power interface is available as a DB15 male connector or flying leads.

Compact and IP65-rated for mobile platforms

At 50×50×76 mm and 150 g, with a 9–28 V DC wide input range and IP65 ingress protection, the DLD05A3 fits into small battery-powered AGV/AMR chassis. The laser is a 905 nm Class I (eye-safe) source.

Applications

AGV/AMR obstacle avoidance with staged slow-down/stop — The 3 discrete outputs map naturally to a three-stage warning/slow-down/stop sequence, and the 16 zone sets can be switched as the vehicle's driving state changes.

Perimeter guarding around a small machine or work cell — The 270° field covers a wide area from a single unit, replacing multiple point-type photoelectric switches pieced together to form a guarded zone.

Presence detection at a doorway or passage — Wide-angle scanning with switching outputs lets the sensor trigger access gates, conveyors, or other linked equipment directly.

Close-range docking protection for mobile robots — The 0.05 m minimum detection range gives a small near-field blind zone, suiting docking scenarios where obstacles sit very close to the sensor.

Narrow-aisle navigation on compact indoor vehicles — The compact 50×50×76 mm housing and close-range detection capability fit vehicles operating in space-constrained aisles.

Retrofit of legacy machines lacking fieldbus/PLC data-parsing capability — Pure switching output wires directly into existing PLC input points without requiring any additional protocol support.

Models & Ordering Information

DLD05A3 Series

DLD05A3-3NDLD05A3-3P

DLD05A3-3N: NPN (sinking) switching output ×3 + device status output ×1. DLD05A3-3P: PNP (sourcing) switching output ×3 + status ×1. Detection range 0.05–5 m for both.

How to Select

Detection range for the DLD05A3 series is fixed at 0.05–5 m with a 270° scanning angle; for higher vehicle speeds or a larger detection radius, consider the same-platform DLD20A5 (0.05–20 m) — the DLD05A3 targets low-speed vehicles and close-range protection.
Choose DLD05A3-3N (NPN sinking) for PLC input cards following Japanese-style electrical conventions, and DLD05A3-3P (PNP sourcing) for European-style conventions; match the sensor's output type to your PLC input card's electrical type.
Both models store 16 zone sets, each with 3 detection zones mapped to the 3 switching outputs — pre-configure multiple sets for typical vehicle states (straight travel, turning, docking) and switch between them at runtime without rewiring or reprogramming.
The output/power interface is available as a DB15 male connector or flying leads; choose based on your existing wiring harness or connector standard. Configuration is always done via Micro-USB.
Operating voltage is DC9–28V, a wide input range compatible with common 12V/24V vehicle or industrial power supplies; IP65 ingress protection suits environments with dust or light moisture.
Select 0.1° angular resolution for finer scanning of small obstacles or dense zone boundaries, or 0.3° where response speed matters more than resolution; choose 15 Hz or 30 Hz scan frequency to match your system's response-time requirements.

📘 Need the full method? How to Choose a 2D LiDAR Scanner

When NOT to specify the DLD05A3 — and what to use instead

Using the DLD05A3 as the protective device in a machine-safety stop function

Why not: The DLD05A3 has no Type (IEC 61496), SIL (IEC 61508) or Category/PL (ISO 13849) rating, and its outputs are 3 plain NPN/PNP switching signals (DC 30 V, 50 mA max) plus 1 status signal — not OSSDs. It is an obstacle-avoidance sensor and cannot serve as a safety component.

Use instead: The DAIDISIKE ST27 Series Safety Laser Scanner — Type 3 / SIL 2 / Cat. 3 PL d, true OSSD outputs, 3 m or 5 m protective field at 1.8% remission.

A vehicle needs obstacle anticipation beyond 5 m — a faster AGV needing longer look-ahead

Why not: Detection range is 0.05-5 m across the 270 degree field. Nothing beyond 5 m is evaluated at all.

Use instead: DLD20A5-5N / DLD20A5-5P (0.05-20 m), which shares the same 50 x 50 x 76 mm housing and discrete-output wiring style.

The integrator wants raw ranging data, a point cloud, or a fieldbus feed for mapping, SLAM or PLC logging

Why not: The DLD05A3 has no Ethernet, RS485 or Modbus interface. Its only outputs are 3 discrete switching signals plus 1 status signal, and its Micro-USB port exists purely to load the 16 zone sets — not to stream runtime data.

Use instead: DLD30T-5N or the DLD50T8 series, which provide Ethernet-based ranging output.

Wiring into a PLC input card without checking whether that card is sinking or sourcing

Why not: DLD05A3-3N is NPN (sinking) only and DLD05A3-3P is PNP (sourcing) only. There is no dual-mode or field-selectable output.

Use instead: Confirm the PLC card's input type first, then order the matching -3N or -3P variant. They are not interchangeable.

Detecting a slim object — a thin cable, chair leg or rack upright — near the 5 m limit in the coarser 0.3 degree mode

Why not: Sub-9 mm scan-point spacing at 5 m applies only at the 0.1 degree setting. The 0.3 degree option leaves wider gaps between points at the same range, so a slim object can fall between them.

Use instead: Select the 0.1 degree setting and accept its scan-frequency trade-off, or add a dedicated close-range photoelectric sensor at that specific point.

Installing outdoors or in an unconditioned space with wide temperature swings

Why not: We do not publish an operating temperature range for the DLD05A3 because the factory has not confirmed one. Only the IP65 ingress rating is documented, and an IP rating says nothing about temperature tolerance.

Use instead: Ask us for the confirmed operating temperature range before specifying an outdoor or extreme-temperature installation.

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.

Operating temperature range.
Housing and lens material.
Power consumption and current draw across the DC 9-28 V input range — only the voltage range is documented.
End-to-end response time from obstacle entry to output change — figures you may find elsewhere (134 ms @15 Hz / 66 ms @30 Hz) are not validated by us, so we do not publish them yet
Exact DB15 connector pin assignment and flying-lead cable length.
Tolerance to ambient sunlight and optical interference.
MTBF or rated service life.
Certification documentation. Certification documents are available on request.

Frequently Asked Questions

Does the DLD05A3 output raw point-cloud data over a fieldbus like Modbus or Ethernet?

No. The DLD05A3 outputs 3 discrete switching signals (NPN or PNP, depending on model) plus 1 status signal. It does not provide RS485/Modbus or Ethernet point-cloud output; integration is via direct wiring to a PLC or controller input, not protocol parsing.

What is the difference between DLD05A3-3N and DLD05A3-3P?

DLD05A3-3N provides NPN (sinking) switching outputs, typically matching Japanese-style PLC input conventions. DLD05A3-3P provides PNP (sourcing) switching outputs, typically matching European-style PLC input conventions. Detection range, scanning angle, and all other specifications are identical between the two.

What is the detection range and scanning angle of the DLD05A3?

The detection range is 0.05–5 m across a 270° scanning field, with detection accuracy of ±30 mm.

How is the sensor configured — is there a display or buttons on the unit?

Configuration of the 16 zone sets is done via a Micro-USB debug interface. Once configured, the sensor operates standalone and does not require an ongoing communication connection during normal operation.

How many protection zones can be stored, and how are the 3 outputs used?

The sensor stores 16 zone sets, each containing 3 detection zones. The 3 discrete outputs correspond to these 3 zones per set, commonly wired as a warning / slow-down / stop sequence. Zone sets can be switched to match different vehicle situations, such as straight travel versus turning.

What is the laser class and is it eye-safe for indoor use around people?

The DLD05A3 uses a 905 nm laser rated Class I.

What is the ingress protection rating and power supply requirement?

IP65, with a wide DC9–28V power input.

What physical size and weight should I plan for when integrating into a mobile robot chassis?

The unit measures 50×50×76 mm and weighs 150 g.

Is this sensor certified as a safety-rated device (e.g., for personnel safety per IEC 61496)?

Certification documents are available on request.

What output connector options are available for wiring into my machine?

The output/power interface is available as a DB15 male connector or as flying leads (bare wires), selectable to match your existing wiring harness standard.