NON-CONTACT INDUSTRIAL MEASUREMENT
Measure position and distance with a visible red laser, an IP67 metal housing and on-device setup. Choose a range up to 100 meters, use RS485 / RS232 and two switch outputs, or select DDB-Y when your controller needs analog feedback.
DDA-Y / DDB-Y · 128 × 32 display · Four-button setup
01 / SELECT YOUR SERIES
Start with the signal your controller needs, then choose the measuring range. For a different sensing task, use our laser sensor selection guide to compare distance, displacement and switching options.
For applications that use serial distance data or switching thresholds without a voltage/current distance signal.
For a controller or analog input module that needs a continuous voltage or current signal representing distance.
Both series have a stated minimum distance of 0.2 m. Select the maximum range for your actual target and installation conditions.
Swipe the table sideways to see every model column →
| Measuring range | Without analog output | With analog output |
|---|---|---|
| 0.2–10 m | DDA-Y10 | DDB-Y10 |
| 0.2–20 m | DDA-Y20 | DDB-Y20 |
| 0.2–30 m | DDA-Y30 | DDB-Y30 |
| 0.2–50 m | DDA-Y50 | DDB-Y50 |
| 0.2–100 m | DDA-Y100 | DDB-Y100 |
Model names identify the nominal range, not a promise that every surface or environment can be measured at that maximum distance. The series-level CAD files are not ten individually verified model drawings.
02 / PERFORMANCE & CONDITIONS
Read the measurement values together with the conditions below. The visible laser assists alignment; the sensor measures the return from the target surface without contact.
0.2 – 100 m (model dependent)
±(2 mm + 0.01% of distance), at speed grade 1
Class II, 660 ±15 nm, ≤1 mW
IP67 · die-cast zinc alloy housing
1–40 Hz in the specification table; see speed-setting note below
Two switch outputs + RS485/RS232; analog output on DDB-Y
Swipe the table sideways to compare all specifications →
| Parameter | DDA-Y Series | DDB-Y Series |
|---|---|---|
| Measurement Performance | ||
| Models | DDA-Y10 / DDA-Y20 / DDA-Y30 / DDA-Y50 / DDA-Y100 | DDB-Y10 / DDB-Y20 / DDB-Y30 / DDB-Y50 / DDB-Y100 |
| Range | 0.2–10 / 20 / 30 / 50 / 100 m, by model | Same five range options |
| Measurement error | ±(2 mm + 0.01% of actual distance), at speed grade 1; target and environmental conditions apply | |
| Resolution | 1 mm | |
| Measurement frequency | 1–40 Hz in the source specification table; the setup text describes approximately 10–40 Hz across five speed grades. Confirm the required setting before integration. | |
| Laser | Class II; 660 ±15 nm; ≤1 mW | |
| Spot diameter | Ø6 mm at 1 m · Ø8 mm at 10 m · Ø12 mm at 20 m · Ø16 mm at 30 m | |
| Electrical Characteristics | ||
| Power Supply | DC 15–30 V | |
| Power Consumption | < 3.0 W | |
| Switch Outputs | Two transistor outputs; supplied manual describes NPN sinking outputs. Do not exceed DC 36 V / 0.5 A; the wiring note specifies current below 500 mA. Confirm the exact supplied version. | |
| Analog Output | None | Selectable 0–5 V / 0–10 V / 4–20 mA / 0–20 mA / 0–24 mA; current and voltage are not simultaneous |
| Analog output error | Not applicable | Voltage: 0.2% + 0.5 mV; current: 0.2% + 0.005 mA (source brochure values) |
| Communication & Environment | ||
| Interface | RS232 / RS485 (menu-selectable) | |
| Serial integration | Command frames and registers are provided in the operating reference. Confirm protocol, register interpretation and PLC settings for the delivered firmware; not a universal plug-and-play compatibility claim. | |
| Display & controls | 128 × 32 dot-matrix display with SET, ESC, up and down buttons | |
| Operating Temp. | –10°C to +50°C | |
| Storage | –20°C to +60°C; 20–85% RH | |
| Protection Rating | IP67 | |
| Housing Material | Die-cast zinc alloy | |
| Overall dimensions | 88.45 × 40 × 59.3 mm, including connector base; check the mounting-version note before making a bracket | |
The quoted error applies at speed grade 1, with distance expressed in consistent units. Strong sunlight, a difficult target or a large temperature change can increase error. A suitable reflector may help, but test the actual arrangement.
The stated 1 mm resolution is not a ±1 mm accuracy claim. Choose the sensor using the complete measurement-error specification and the conditions of the application, not the display increment alone.
The source table states 1–40 Hz. Its setup text gives approximately 10 Hz at grade 1 and approximately 40 Hz at grade 5. These source descriptions are not identical; confirm your required update rate before commissioning.
Source basis: the English datasheet and the supplied operating manual/technical brochure, with DAIDISIKE branding and the supplier-confirmed mounting dimension. The reference translations identify remaining source discrepancies rather than silently resolving them. Preview all three PDFs below.
03 / MECHANICAL DESIGN
Use the outline drawing for an initial layout, then confirm the controlled drawing for your ordered version before drilling, machining or selecting a bracket.
DDA-Y and DDB-Y STEP downloads are available below. The two supplied files contain identical geometry; the source CAD does not identify a range variant. They support layout review, not independent verification of all ordered configurations.
Open PDF & CAD downloads ↓04 / CONTROLLER CONNECTION
Check the delivered label, cable and operating manual with power disconnected. The table below is the sensor-side eight-pin assignment, not the pinout of a USB or D-Sub converter.
Swipe the table sideways to read all wiring details →
| Sensor pin | Wire color | Signal | Function |
|---|---|---|---|
| 1 | White | I/U− | Analog return, DDB-Y only |
| 2 | Brown | +15–30 V | DC power supply positive |
| 3 | Green | RS232 RX / RS485 B | Communication, according to the selected interface |
| 4 | Yellow | RS232 TX / RS485 A | Communication, according to the selected interface |
| 5 | Grey | OUT1 | Switching output 1 |
| 6 | Pink | OUT2 | Switching output 2 |
| 7 | Blue | 0 V | DC supply return |
| 8 | Red | I/U+ | Analog signal, DDB-Y only |
The manual identifies the shield as earth grounding. I/U+ and I/U− apply to the analog-equipped DDB-Y version; their appearance in generic drawings does not add analog output to DDA-Y.
Select the interface on the sensor and match the controller settings. The source gives 9600 baud, 8 data bits, 1 stop bit and no parity as the default; verify the current settings rather than assuming a used sensor is still at default.
For RS232, cross-connect TX and RX with the correct signal reference. For RS485, follow the A/B labeling and bus guidance for your controller. The manual supports station addresses 1–64; the source’s converter pin 8 is not sensor pin 8.
OUT1 and OUT2 have configurable threshold and output settings. The source describes NPN sinking behavior. Verify the controller input type and required switching logic before applying it to the machine.
The source limit is DC 36 V / 0.5 A, with a wiring note specifying current below 500 mA. For background only, see NPN sinking versus PNP sourcing explained; that guide’s 3/4-wire examples do not replace this eight-pin table.
Select one current or voltage mode and match it to the receiving input. Set the lower and upper distance limits for the intended signal span. Do not configure a voltage signal as though it were a current loop.
The translated manual flags inconsistent numbers in one current-output example. Check the scaling using known distances and confirm the formula/settings for the supplied unit before relying on a displayed engineering value.
05 / LOCAL CONFIGURATION
The 128 × 32 dot-matrix display shows the station number, measured distance and unit. Four buttons support local configuration without connecting a computer.
Hold SET to enter settings; use SET to confirm and ESC to return. The arrow buttons select or adjust the value. See the operating manual for the complete button and menu instructions.
Watch the existing product demo ↗Record the complete model, range, wiring label and firmware information. Check whether analog output is required and present.
Mount securely, align the beam and compare the displayed distance with a known position under the intended lighting conditions.
Choose the serial interface, station and format; then configure the required switch thresholds or DDB-Y analog mode and span.
Test the relevant distances, output transitions, signal scaling and communication errors with the machine in a safe commissioning state. Record the verified settings.
The display backlight can time out after 30 minutes or be set to remain on. Setup screenshots in the reference manual show example values; they are not necessarily your delivered configuration.
06 / APPLICATION FIT
Position, displacement, level, thickness and distance are different measurement tasks. The right model depends on the target and measurement geometry, not only the maximum range printed in its name.
Swipe the table sideways to read each application check →
| Task | Possible measurement arrangement | Confirm before selecting |
|---|---|---|
| Machine or carriage position | Measure the changing gap to a defined target along the laser axis. | Confirm the full travel, minimum distance, target size and required update rate. |
| Material level or fill height | Measure distance to a suitable material surface and relate it to a known reference height. | Test the actual surface, dust, slope and return signal. Liquid and highly reflective targets require an application test. |
| Displacement or thickness checks | Observe a change in distance relative to a stable reference. | Check fixture stability and geometry. Thickness requires a defined reference arrangement; a single distance reading is not automatically a thickness result. |
| Long-span distance monitoring | Monitor a suitable target within the selected model’s stated range. | Check ambient light, temperature variation, alignment and reflector requirements on site. This is not a safety-rated protective sensor. |
07 / ENGINEERING RESOURCES
Use the English datasheet for the technical overview, the operating reference for menus, wiring and source protocol details, and the technical brochure reference for model tables and illustrated connections. All three use DAIDISIKE branding. Reference translations identify remaining source differences; confirm the relevant details before installation.
DAIDISIKE English datasheet, retained at its original download address.
DAIDISIKE English operating reference with translated diagram labels and supplier-confirmed 46.78 mm mounting-hole spacing. Remaining source inconsistencies are flagged; confirm settings before commissioning.
DAIDISIKE English technical brochure covering model selection, measurement conditions, dimensions and wiring, with the confirmed mounting-spacing note. Confirm the exact sensor and adapter pinouts before use.
Open the download center with the named series selected. Search your full model, check the file details and download the matching STEP file.
Confirm the document and CAD file match your exact ordered version before installation or mechanical design. Contact us if your model is not listed.
08 / QUICK ANSWERS
The five model ranges are 0.2–10, 0.2–20, 0.2–30, 0.2–50 and 0.2–100 m. The source specifies ±(2 mm + 0.01% of actual distance) measurement error at speed grade 1 and 1 mm resolution. Resolution is not the same as accuracy. Target reflectivity, strong light and temperature changes can affect the result, so validate the intended position, level or thickness-measurement arrangement with the actual target.
Both series offer the same five stated range options, two switching outputs, RS232/RS485 communication and IP67 housing. DDA-Y has no analog output. DDB-Y adds selectable 0–5 V, 0–10 V, 4–20 mA, 0–20 mA or 0–24 mA output. Current and voltage cannot be output simultaneously. The supplied operating manual describes NPN sinking switch outputs; confirm the output type on the ordered version rather than assuming PNP is available.
RS485 and RS232 are selectable in the on-device communication settings. The supplied manual includes command frames and a register table, but it contains register-description inconsistencies, so confirm Modbus RTU requirements, firmware and register interpretation before programming a PLC or SCADA system. Use the sensor’s eight-pin wire table on this page: green is RX/B and yellow is TX/A. The source supports station addresses 1–64 and networking of up to 64 instruments; the illustrated converter’s pin numbers are not the sensor’s connector pin numbers.
The specified laser is Class II, 660 ±15 nm and ≤1 mW. Do not stare into the beam. The zinc-alloy housing is rated IP67, with an operating range of –10°C to +50°C and storage range of –20°C to +60°C at 20–85% RH. IP67 is not a guarantee for every washdown, chemical or vibration condition. The source describes measurement stopping above 70°C body temperature and resuming below 70°C; this is not permission to operate above the stated ambient limit. No functional-safety rating is established by these documents.
It may be considered for an alternative design after an engineering comparison, not as an automatic drop-in replacement. Compare range, target, measurement conditions, response setting, mounting drawing, connector wiring, output behavior and communication protocol against the existing unit. Send the exact existing model and application details so the differences can be checked before ordering.
The download area contains the English datasheet, an English operating-manual reference translation and an English technical-brochure reference translation. Each has separate preview and download links. The two supplied DDA-Y/DDB-Y STEP files have identical geometry and do not identify a range variant. The supplier confirmed 46.78 mm mounting-hole spacing for the current DDA-Y/DDB-Y version on 23 September 2026; confirm the ordered hardware and controlled drawing before drilling or machining.
Do not assume so. The quoted measurement-error specification is explicitly tied to speed grade 1. The specification table lists 1–40 Hz, while the operating text describes approximately 10 Hz at grade 1 and approximately 40 Hz at grade 5. Confirm the update rate and measurement error needed for your process using the delivered unit and actual target.
09 / ENGINEERING SUPPORT
A model name alone is not enough to confirm fit. Share these six details so we can review the range, output and installation requirements together.
Contact an EngineerSpecs reviewed by Engineer Cai, Senior Application Engineer. See company certificates. Product settings and source-document differences still require confirmation for the ordered version.