DLD20A5-5N / DLD20A5-5P 2D TOF Obstacle-avoidance LiDAR (20 m)

Name: DLD20A5-5N / DLD20A5-5P 2D TOF Obstacle-avoidance LiDAR (20 m)
Brand: DAIDISIKE
SKU: dld20a5-5n-dld20a5-5p-2d-tof-obstacle-avoidance-lidar
Availability: InStock

20 m 2D TOF LiDAR with pure NPN/PNP discrete outputs — wires straight into a PLC, no protocol, no SDK.

DLD20A5-5N / DLD20A5-5P 2D TOF Obstacle-avoidance LiDAR (20 m) - product photo

🔍 Click to enlarge · 1/16

Technical Specifications

Model	DLD20A5-5N / DLD20A5-5P
Output type	DLD20A5-5N: NPN discrete x3 + status x1; DLD20A5-5P: PNP discrete x3 + status x1
Switch output rating	DC30V 50mA MAX
Detection range	0.05-20 m
Scan angle	270°
Scan rate	15/30 Hz
Angular resolution	0.1° / 0.3°
Detection accuracy	±30 mm
Laser	905 nm, Class I
Operating voltage	DC9-28V
Ingress protection	IP65
Zone sets	16 zone sets
Dimensions	50 x 50 x 76 mm

Overview

The DLD20A5 is a 270° 2D Time-of-Flight LiDAR sensor that scans out to 20 m and, instead of streaming raw point-cloud or Ethernet data, evaluates the scan against 16 stored zone sets and drives three independent discrete outputs (NPN sinking on the -5N variant, PNP sourcing on the -5P variant) plus a status output.

It is built for machine builders and system integrators who need long-range, multi-level area monitoring (warning / slow-down / stop) but want to control it the same way they control a photoelectric sensor or a safety-style area scanner — with hard-wired switch signals into a PLC — rather than building an Ethernet/bus integration.

Key Facts — DLD20A5-5N at a glance

The DLD20A5 2D TOF LiDAR detects objects from 0.05 m to 20 m and outputs three NPN or PNP discrete switch signals plus one status signal, with no Ethernet or bus protocol involved.
The DLD20A5 scans a 270° field at a selectable 15 Hz or 30 Hz rate, with 0.1° or 0.3° selectable angular resolution and ±30 mm detection accuracy.
The DLD20A5 uses a 905 nm, Class 1 laser source and carries an IP65 ingress protection rating, operating on a DC9-28V supply.
The DLD20A5 stores 16 zone sets, each providing three nested detection fields mapped to its three discrete outputs, enabling staged warning/slow-down/stop responses.
The DLD20A5 measures 50 x 50 x 76 mm, the same housing footprint as the 5 m-range DLD05A3 in the same sensor family.
The -5N variant of the DLD20A5 provides NPN (sinking) outputs; the -5P variant provides PNP (sourcing) outputs, both rated DC30V 50mA max.

Features & Benefits

Pure discrete-output long-range LiDAR

20 m detection with 3x NPN or PNP switch outputs plus 1 status output, with no protocol stack or SDK required to bring it online.

NPN and PNP variants for global electrical standards

The -5N (sinking) and -5P (sourcing) variants cover Japanese- and European-style control panel wiring within one series.

Three outputs x 16 stored zone sets for staged protection

Each zone set provides three nested detection fields mapped to the three discrete outputs, letting a vehicle switch between warning / slow-down / stop responses as speed or route section changes.

0.05 m to 20 m coverage in one sensor

Long-range anticipation and close-in detection are handled by the same unit, without a dead zone near the sensor face.

0.1°/0.3° selectable angular resolution

At the finer 0.1° setting, scan points remain roughly 35 mm apart even at the 20 m limit, helping keep slim objects within the evaluated field. 15/30 Hz scan-rate options are available.

±30 mm detection accuracy, 905 nm Class 1 laser

TOF ranging accuracy is quoted at ±30 mm across the working range, using an eye-safe Class 1 laser source.

IP65-rated, DC9-28V wide supply, compact housing

A 50 x 50 x 76 mm housing with IP65 protection suits installation on mobile platforms and machine frames without a dedicated enclosure.

Mechanically and electrically identical to the 5 m version (DLD05A3)

Same 270° field, ±30 mm accuracy, 905 nm Class 1 laser, DC9-28V supply, IP65 rating and 50 x 50 x 76 mm housing, so extending a product line from 5 m to 20 m coverage does not require new brackets, wiring, or mounting hole layouts.

Applications

Long-range obstacle anticipation on AGVs/AMRs — 20 m range plus 16 zone sets support a staged warning-slowdown-stop response as vehicle speed or route section changes, matching the braking-distance planning that faster mobile platforms need.

Perimeter/area monitoring around large machines or gantry equipment — 270° scan angle and multi-zone evaluation cover a wide field around equipment with a single sensor mounted at one point.

Presence detection in warehouse aisles and vehicle pathways — Long detection range (up to 20 m) lets the sensor flag an obstacle or vehicle well before it enters a close-range hazard zone.

Anti-collision warning for indoor hoisting/transfer equipment — The discrete switch outputs interface directly with existing relay/PLC-based interlock logic already used on this type of equipment.

Speed-dependent zone switching for AGVs navigating turns or docking bays — 16 stored zone sets allow the detection field shape to be pre-configured per route section and switched externally, rather than requiring a single fixed field for all conditions.

PLC-only integration where an Ethernet/bus lidar is not wanted — Because the sensor's own three outputs already carry the field-evaluation result, no protocol driver or point-cloud processing is required on the controller side.

Retrofitting or line-extension of an existing 5 m-range installation — Same housing dimensions, supply voltage, and IP rating as the DLD05A3 mean the sensor can extend range coverage without redesigning the mechanical mounting.

Models & Ordering Information

DLD20A5 series

DLD20A5-5NDLD20A5-5P

-5N: NPN discrete outputs x3 + status output x1 (DC30V 50mA MAX), detection range 0.05-20 m. -5P: PNP discrete outputs x3 + status output x1, detection range 0.05-20 m.

Earlier model code

DLDS2030A-5S

Some earlier shipments of this same device were supplied under the code DLDS2030A-5S. It is the same product. If you hold that code, quote it when ordering and we will match a like-for-like replacement.

How to Select

By detection range: the DLD20A5 series covers 0.05-20 m. If the required detection range is only up to 5 m, the mechanically identical DLD05A3 series is the closer fit; if the application needs Ethernet-based ranging data output at 30 m or 50 m, see the DLD30T / DLD50T8 series instead.
By output type (NPN/PNP): choose -5N (NPN, sinking) for control panels built around sinking-input PLCs; choose -5P (PNP, sourcing) for sourcing-input PLCs. Both variants share identical detection performance — only the output electrical type differs.
By zone sets: all DLD20A5 units include 16 stored zone sets, each providing 3 nested detection fields mapped to the 3 discrete outputs. Select which zone set is active via external switching to match the vehicle's current speed or route section.
By angular resolution/scan rate: 0.1° resolution at 20 m keeps scan points about 35 mm apart, better for detecting slim objects at long range; 0.3° gives coarser resolution. Scan rate is selectable at 15 Hz or 30 Hz — higher scan rate updates the field faster, useful for higher vehicle speeds.
By power supply and mounting: DC9-28V wide-range supply and a 50 x 50 x 76 mm IP65 housing are common to both variants, so the mechanical/electrical footprint does not change with the output-type choice — only wiring polarity differs between -5N and -5P.

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

When NOT to specify the DLD20A5-5N — and what to use instead

Using the DLD20A5 to protect a person in a machine-safety stop circuit

Why not: No Type (IEC 61496), SIL (IEC 61508) or Category/PL (ISO 13849) rating is documented for this sensor, and its outputs are 3 NPN/PNP discrete switches (DC 30 V, 50 mA max) plus a status signal — not OSSDs.

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

Setting braking or stopping-distance logic against the full 20 m range for dark or low-reflectivity targets

Why not: The published 0.05-20 m figure carries no target-reflectivity qualifier. Other LiDARs in this line state their range against a specific remission (for example DLD05A3's siblings quote 90% and 10% cases separately), but the reflectivity basis for the DLD20A5's 20 m number is an open item we have flagged internally and have not resolved with the factory. Real range on a dark target could be materially shorter than 20 m.

Use instead: Ask us for the reflectivity basis of the 20 m figure before you finalise zone sizes. Until it is confirmed, build in margin and add a closer redundant zone for dark or unknown-reflectivity targets.

The application only ever needs to see objects within about 5 m

Why not: The DLD20A5 is built and tuned for 0.05-20 m coverage, and its zone-set library is sized around far-field staged braking rather than tight short-range logic. You would be paying for range you do not use.

Use instead: The mechanically identical DLD05A3-3N / DLD05A3-3P (0.05-5 m) from the same housing platform.

You need Ethernet or fieldbus ranging data rather than a hardwired trigger

Why not: The DLD20A5 is pure discrete I/O — 3 NPN or PNP switching outputs plus 1 status signal — with no Ethernet or bus protocol of any kind.

Use instead: DLD30T-5N or the DLD50T8 series, which output Ethernet-based ranging data instead of switch signals.

Wiring the -5N or -5P variant without first checking the panel's input convention

Why not: The -5N variant is NPN (sinking) only and the -5P variant is PNP (sourcing) only. There is no combined or field-switchable output type.

Use instead: Verify the input polarity before ordering: -5N for sinking-input cards, -5P for sourcing-input cards.

Flagging a slender object — a thin post, cable or pedestrian leg — near the far edge of 20 m using the 0.3 degree setting

Why not: At 0.1 degree resolution scan points sit roughly 35 mm apart even at 20 m. The coarser 0.3 degree setting spreads them further at the same distance, raising the chance a slim object is missed between adjacent points.

Use instead: Use the 0.1 degree setting for long-range slim-object detection, or add a dedicated closer-range sensor as backup at that point.

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.

Target reflectivity basis for the published 0.05-20 m maximum range. No 90% / 10% (or other) qualifier is documented for this model, unlike others in the line — this directly affects stopping-distance planning, so ask us before you fix a safety margin
Weight — not confirmed, unlike the 150 g documented for the shorter-range DLD05A3.
Operating temperature range.
Housing and lens material.
End-to-end response time — 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
Power consumption and current draw across the DC 9-28 V input range.
Output and power connector type (DB15 versus flying leads) and cable length.
Certification documentation. Certification documents are available on request.

Frequently Asked Questions

What is the maximum detection range of the DLD20A5?

The DLD20A5 detects from 0.05 m up to 20 m, per the manufacturer's product specification sheet.

What output signals does the DLD20A5 provide?

Three discrete switch outputs plus one status output. The -5N variant is NPN (sinking), rated DC30V 50mA max; the -5P variant is PNP (sourcing), same rating.

Does the DLD20A5 use Ethernet or a bus protocol like RS485/Modbus?

No. The DLD20A5's output is purely discrete (switch) I/O — three NPN or PNP outputs plus one status output — with no bus protocol.

What is the scan angle and scan rate?

The scan angle is 270°, with a selectable scan rate of 15 Hz or 30 Hz.

What angular resolution options are available?

0.1° or 0.3°, selectable. At the 0.1° setting, scan points are roughly 35 mm apart at the 20 m range limit.

How accurate is the distance measurement?

The rated detection accuracy is ±30 mm.

What laser type does the DLD20A5 use, and is it eye-safe?

It uses a 905 nm laser rated Class 1, the eye-safe classification under standard laser safety classification schemes.

What is the operating voltage and ingress protection rating?

DC9-28V supply voltage, IP65 ingress protection rating.

How many zone sets does the DLD20A5 support?

16 stored zone sets, each defining three nested detection zones that map to the sensor's three discrete outputs.

What is the physical size of the DLD20A5?

50 x 50 x 76 mm, the same housing dimensions as the shorter-range DLD05A3 (5 m) sensor in the same product family.

How is the DLD20A5 different from the DLD30T or DLD50T8 series?

The DLD30T and DLD50T8 series output Ethernet-based ranging/measurement data; the DLD20A5 outputs pure discrete switch signals for direct PLC wiring rather than measurement data.

Can the DLD20A5 provide certification documents such as CE, FCC, or RoHS?

Certification documents are available on request.