Introduction to the SICK DT35-B15251 Analog Laser Sensor

The SICK DT35-B15251 provides precise distance measurement for industrial automation. This analog laser sensor measures from 50 mm up to 12,000 mm. For 90% remission targets, the full 12m range remains available. At 18% remission, the range reaches 5,300 mm reliably. For 6% remission dark targets, the range measures 3,100 mm. The sensor detects natural objects without requiring special reflectors. Additionally, the DT35-B15251 offers an impressive 0.1 mm resolution for fine positioning tasks. As a result, this sensor suits demanding measurement applications across many industries.

Power Supply and Electrical Specifications

The SICK DT35-B15251 requires careful attention to power quality. Supply voltage Vs accepts 12 V to 30 V DC for flexible integration. Ripple must stay at or below 5 Vpp for stable operation. Power consumption remains low at only 1.7 W maximum. Initialization time takes up to 500 ms before measurements begin. Warm-up time reaches 20 minutes for full accuracy stabilization. Therefore, consider warm-up requirements for precision measurement applications.

Mechanical Construction and Physical Dimensions

The SICK DT35-B15251 features a compact, lightweight design for easy mounting. Housing material uses plastic (ABS/PC) for durability and weight savings. Window material consists of plastic (PMMA) for optical clarity. Dimensions measure 32 mm width x 58.67 mm height x 42.7 mm depth. Total weight reaches only 65 grams, ideal for robotic applications. Connection uses an M12 5-pin male connector for secure attachment. LED indicators provide visible status feedback during operation. Enclosure rating reaches IP65 and IP67 for dust and water protection. Protection class III means the sensor operates safely at extra-low voltage.

Measurement Performance and Accuracy

The SICK DT35-B15251 delivers exceptional measurement performance for industrial use. Resolution reaches 0.1 mm for fine detail detection. Repeatability measures at or above 0.5 mm for consistent results. Typical accuracy comes to ±10 mm across the measuring range. Response time adjusts across several settings: 2.5 ms, 6.5 ms, 12.5 ms, 24.5 ms, or 96.5 ms. Switching frequency varies with speed selection: 333 Hz, 100 Hz, 50 Hz, 25 Hz, or 6 Hz. Output time changes accordingly: 1 ms, 2 ms, 4 ms, 8 ms, or 32 ms. Consequently, you can optimize speed versus stability for each application.

Optical Specifications and Laser Safety

Understanding the optical characteristics helps with proper sensor placement. Light source uses a red laser for visible aiming and setup. Laser class is Class 2 per IEC 60825-1:2014 and EN 60825-1:2014. This class means the laser is safe for accidental eye exposure. However, avoid staring directly into the laser beam intentionally. Typical light spot size measures 15 mm x 15 mm at 2 meters distance. Wavelength falls within the visible red spectrum for easy alignment. Average laser service life reaches 100,000 hours at 25°C ambient temperature. Therefore, the sensor provides many years of maintenance-free operation.

Analog Output Configuration Options

The SICK DT35-B15251 offers flexible analog output configuration for various control systems. Number of analog outputs is 1 channel. Output types include current output or voltage output selection. For current output, the range spans 4 mA to 20 mA with a maximum load of 450 Ω. For voltage output, the range spans 0 V to 10 V with a minimum load of 50 Ω. Resolution reaches 12 bits for smooth analog signal changes. Hysteresis adjusts from 0 mm up to 11,950 mm as needed. Teach-in functionality allows easy scaling of the analog output range. Additionally, you can invert the analog output characteristic if required.

Digital Output and IO-Link Interface

The SICK DT35-B15251 includes powerful digital communication capabilities. Number of digital outputs ranges from 1 to 2 channels. Output type uses push-pull technology supporting both PNP and NPN loads. Maximum output current IA reaches 100 mA per channel. Output Q2 adapts flexibly as current output, voltage output, or digital output. Switching modes include Distance to Object (DtO), switching window, and object between sensor and background (ObSB). For advanced integration, IO-Link V1.1 provides full parameterization and diagnostics. Data transmission rate runs at 38.4 kbit/s for reliable communication. Process data flows continuously alongside parameter and diagnostic information.

Additional Functions and Configuration Features

The SICK DT35-B15251 includes many configurable functions for application flexibility. Speed settings range from Super Fast to Super Slow for optimization. Teach-in of analog output simplifies scaling without external tools. Output Q2 adapts as current, voltage, or digital output per application needs. For digital output, teach-in and invertible output provide configuration ease. A multifunctional input offers three options: laser off, external teach, or deactivated. Reset to factory default restores original settings quickly. These features make the DT35-B15251 adaptable to changing production requirements.

Environmental Tolerance and Operating Conditions

The SICK DT35-B15251 withstands challenging industrial environments reliably. Ambient operating temperature ranges from -30°C to +55°C with supply voltage at or below 24V. Storage temperature spans from -40°C to +75°C for warehouse conditions. Maximum relative humidity (non-condensing) reaches 95% for humid environments. Vibration resistance meets EN 60068-2-6 and EN 60068-2-64 standards. Shock resistance complies with EN 60068-2-27 for mechanical robustness. Consequently, this sensor performs reliably in factories, warehouses, and outdoor applications.

Installation Guidelines for the SICK DT35-B15251 Sensor

Install the SICK DT35-B15251 according to the manufacturer’s recommendations. First, mount the sensor on a stable surface free from vibration. Connect the M12 5-pin male connector to a matching female cable. Supply 12 V to 30 V DC power within the specified ripple limits. Wire the analog output to your PLC or controller analog input. For current output, ensure the load resistance stays at or below 450 Ω. For voltage output, keep the load resistance at or above 50 Ω. Configure the response time based on your target speed requirements. Perform a teach-in procedure to scale the analog output range. Finally, verify measurement accuracy against a known reference distance.

Packaging List for the SICK DT35-B15251 Analog Laser Sensor

– One SICK DT35-B15251 analog laser distance sensor – One M12 5-pin male connector (attached to sensor) – One product quick start guide – One mounting bracket set (basic)

Frequently Asked Questions (FAQ)

1. What is the maximum measuring range of the DT35-B15251?

The SICK DT35-B15251 measures up to 12,000 mm (12 meters) with 90% remission targets. For 6% remission dark objects, the range reaches 3,100 mm reliably.

2. What analog output options does the DT35-B15251 provide?

This sensor offers both 4-20 mA current output and 0-10 V voltage output. Output Q2 adapts flexibly as current, voltage, or digital output based on configuration.

3. Does the DT35-B15251 support IO-Link communication?

Yes, the DT35-B15251 supports IO-Link V1.1 at 38.4 kbit/s. This interface enables process data, parameterization, and diagnostics.

4. What is the resolution of the SICK DT35-B15251?

Resolution reaches 0.1 mm for precise distance measurement. Repeatability measures at or above 0.5 mm for consistent results across measurements.

5. What laser class does the DT35-B15251 use?

This sensor uses Laser Class 2 per IEC 60825-1:2014 and EN 60825-1:2014. The red laser is visible and safe for accidental eye exposure under normal use.