Product Overview

The DT35-B15551 is a time-of-flight distance sensor from the SICK Dx35 series. This sensor measures distances from 50 mm up to 12,000 mm. The SICK DT35-B15551 uses visible red laser light for precise targeting. A laser class 1 rating ensures eye-safe operation for all users. The Dx35 sensor detects natural objects without special reflectors. This device provides both analog and digital outputs for flexible integration. The DT35-B15551 supports IO-Link V1.1 for advanced parameterization and diagnostics. A rugged ABS housing with IP67 rating suits harsh industrial environments.

Technical Specifications

The SICK DT35-B15551 delivers accurate distance measurement for many automation tasks. Below are the detailed technical parameters.

General Information

• Brand: SICK

• Series: Dx35

• Sensor style: Block

• Detection type: Distance (Time-of-Flight)

• Target: Natural objects (no reflector needed)

• Country of Origin: Germany

Detection Ranges

• 50 mm to 12,000 mm at 90% remission factor

• 50 mm to 5,300 mm at 18% reflection factor

• 50 mm to 3,100 mm at 6% remission factor

• Hysteresis: 0 mm to 11,950 mm (configurable)

Performance Specifications

• Resolution: 100 µm

• Repeatability: ≥ 0.5 mm

• Measurement accuracy: Typ. ± 10 mm

• Light source: Laser, visible red light

• Typical light spot size: 15 mm x 15 mm (at 2 meters)

Response and Output Timing

• Response time: 4.5 ms, 12.5 ms, 24.5 ms, 48.5 ms, or 192.5 ms (selectable)

• Switching frequency: 166 Hz, 50 Hz, 25 Hz, 12 Hz, or 3 Hz

• Output time: 2 ms, 4 ms, 8 ms, 16 ms, or 64 ms (selectable)

Laser Specifications

• Normative reference: IEC 60825-1:2014, EN 60825-1:2014

• Laser class: 1 (eye-safe)

• Average laser service life: 100,000 hours at 25°C

Outputs and Interface

• Output type: Analogue and PNP/NPN (push-pull)

• Number of digital outputs: 1 to 2

• Analog output: 4-20 mA (≤ 450 Ω) or 0-10 V (≥ 50,000 Ω)

• Analog resolution: 12 bit

• Communication protocol: IO-Link V1.1

• IO-Link functions: Process data, parameterization, diagnosis, data storage

• IO-Link data rate: 38.4 kbit/s

• Multifunctional input (MF): 1 (laser off, external teach, deactivated)

Electrical Specifications

• Supply voltage (UB): DC 12 V to 30 V

• Maximum DC voltage: 30 V

• Maximum current: 100 mA

• Power consumption: ≤ 1.7 W

• Ripple: ≤ 5 Vpp

• Initialization time: ≤ 500 ms

• Warm-up time: ≤ 20 minutes

• Protection class: III

• Electrical connection: M12 5-pin male connector

Mechanical Specifications

• Dimensions (W x H x D): 32 mm x 58.67 mm x 42.7 mm

• Housing material: Plastic (ABS/PC)

• Window material: Plastic (PMMA)

• Weight: 65 g

• IP rating: IP65 and IP67

Environmental Specifications

• Operating temperature: -30°C to +55°C (at Uv ≤ 24 V)

• Storage temperature: -40°C to +75°C

• Maximum relative humidity: ≤ 95% (non-condensing)

• Vibration resistance: EN 60068-2-6, EN 60068-2-64

• Shock resistance: EN 60068-2-27

• EMC compliance: EN 61000-6-2, EN 61000-6-3, EN 61000-6-4

Safety Parameters

• MTTFD: 101 years

• DCavg: 0%

Additional Functions

The SICK DT35-B15551 includes many configurable features for application flexibility. Set speed options range from Super Fast to Super Slow. Teach-in of analog output with invertible output is supported. Output Q2 adapts as current output, voltage output, or digital output. Switching modes include Distance to Object (DtO), switching window, or object between sensor and background (ObSB). Digital output teach-in and inversion are both supported. The multifunctional input can disable laser, accept external teach, or remain deactivated. Reset to factory default is available for quick recovery.

Installation Guide

Follow these steps to install the SICK DT35-B15551 correctly.

1. De-energize the control circuit before handling connections.

2. Mount the DT35-B15551 on a stable bracket at the required distance.

3. Ensure the sensor faces the target without obstructions.

4. Connect an M12 5-pin male connector to the sensor.

5. Wire the supply voltage between 12 V and 30 V DC.

6. Connect the analog output (4-20 mA or 0-10 V) to your PLC input.

7. Wire the digital output for switching applications as needed.

8. Use the multifunctional input for external teach or laser control.

9. Apply power and wait 500 ms for initialization.

10. Configure the Dx35 sensor using IO-Link or teach-in buttons.

Package List

• 1 x SICK DT35-B15551 time-of-flight distance sensor

• 1 x Quick start guide with wiring diagram

• 1 x Product label with serial number and specifications

Note: M12 5-pin connector cable is not included with the DT35-B15551.

Frequently Asked Questions (FAQ)

1. Can the DT35-B15551 detect black or low-reflective objects?
Yes, the SICK DT35-B15551 detects objects with only 6% remission. Black rubber and dark plastics are detectable at 3.1 meters range.

2. What is the difference between response time and output time?
Response time on the DT35-B15551 is the delay between target change and signal update. Output time is the duration the output stays active.

3. Does this sensor require a reflector for operation?
No, the Dx35 series uses time-of-flight technology. The DT35-B15551 detects natural objects without any reflector.

4. How do I change the analog output from current to voltage?
Use the teach-in function or IO-Link on the SICK DT35-B15551. Output Q2 adapts to current output (4-20 mA) or voltage output (0-10 V).

5. What is the maximum cable length for this sensor?
The DT35-B15551 with M12 connector supports cable lengths up to 30 meters. Keep the supply voltage above 12 V at the sensor for reliable operation.