Problem: Reliable Position Feedback in Freezers and Long Aisles

Cold-storage automated storage and retrieval systems (ASRS) demand position feedback that survives condensation, ice, and long travel distances. The SICK DL100-21HA2102 answers that challenge directly. It is a phase-shift optical time-of-flight laser distance sensor from the Dx100 DL100 Pro family. Its single most important verified differentiator is an operating range of 0.15 m to 100 m on Diamond Grade reflective tape, combined with an integrated heating system that keeps the sensor running down to -40 °C.

This sensor is built for demanding environments. PetroPartsOnline supplies the DL100-21HA2102 for mission-critical oil and gas and logistics operations where dependable positioning matters.

Key Specifications of This unit

• Measurement principle: Phase shift optical time-of-flight laser distance measurement.
• Measuring range: 0.15 m to 100 m on Diamond Grade reflective tape.
• Measurement accuracy: Typically ±2 mm to ±3 mm.
• Repeatability: 0.5 mm to 1 mm, with a typical 0.5 mm at 1 σ.
• Maximum tracking velocity: 15 m/s.
• Maximum acceleration: 15 m/s².
• Measurement cycle: ≥ 1 ms continuous internal rate; fieldbus cycle dependent.
• Light source: Visible red laser diode, 658 nm, Class 2 per IEC 60825-1:2014, average optical power < 1 mW.
• Supply voltage: DC 18 V to 30 V, reverse-polarity protected.
• Power consumption: Typically 25 W to 35 W with the internal heating element active.
• Communication interface: PROFIBUS DP (EN 50170, up to 12 Mbit/s).
• Auxiliary outputs: 2x push-pull (PNP/NPN, configurable B/Q, ≤ 100 mA) plus a multifunctional input (MF).
• Electrical connection: Power via male M12 4-pin; PROFIBUS In/Out via 2x female M12 5-pin, B-coded, SPEEDCON™.
• Operating ambient temperature: -40 °C to +55 °C with the integrated heating system active.
• Storage ambient temperature: -40 °C to +75 °C.
• Enclosure protection rating: IP65 (EN 60529).
• Housing material: Aluminum die-cast with acrylic glass (PMMA) optical window.
• Dimensions (W x H x D): 69.4 mm x 82.5 mm x 100.2 mm.
• Weight: Approx. 1,000 g.

The operating temperature range is the standout parameter for cold-chain applications. Because the heating system is active, the sensor maintains performance at -40 °C, which is essential for freezer aisles and outdoor installations in harsh climates.

Application Fit: Where This unit Excels

Engineers specify this sensor when long-range, high-speed positioning is non-negotiable. In ASRS cranes, the 15 m/s tracking velocity and 15 m/s² acceleration match the dynamics of modern storage and retrieval machines. Consequently, the sensor keeps pace without losing lock on the reflective tape.

Cold-storage facilities benefit from the integrated heating system. This unit operates reliably at -40 °C, so ice and frost do not interrupt position feedback. Meanwhile, the IP65 rating and die-cast aluminum housing protect against dust and water jets in washdown-adjacent zones.

Oil and gas warehouses and pipe yards also deploy this sensor for gantry positioning. The PROFIBUS DP interface integrates with existing control networks, and the 100 m range covers long travel paths without repeaters. Finally, the integrated LC display and optical 3-axis alignment bracket compatibility simplify commissioning in the field.

Installation and Commissioning Notes

Mount This unit using the optical 3-axis alignment bracket to ensure the laser beam strikes the Diamond Grade tape squarely. Connect power through the male M12 4-pin connector, and verify the supply voltage stays within DC 18 V to 30 V. For PROFIBUS, use the two female M12 5-pin B-coded SPEEDCON™ connectors for In/Out wiring.

During commissioning, use the integrated LC display for menu navigation and parameter checks. Confirm the fieldbus cycle time supports your required output rate, because the measurement cycle is fieldbus cycle dependent. Also, respect the Class 2 laser safety precautions per IEC 60825-1:2014 during alignment.

Maintenance and Long-Term Reliability

This unit has no moving parts in its measurement path, which reduces wear. However, the PMMA optical window requires periodic inspection for dust, ice, or condensation. In cold-storage environments, check the heating system function regularly to ensure it maintains the operating temperature range.

Inspect the M12 connectors for moisture ingress and tighten the SPEEDCON™ couplings. Because the housing is IP65-rated, avoid high-pressure washing directly on the optical window. Following these practices supports reliability you can depend on in demanding environments.

Troubleshooting Common Issues

If measurement dropouts occur, first verify the reflective tape is clean and correctly positioned within the 0.15 m to 100 m range. Next, check the supply voltage under load; a drop below DC 18 V can cause intermittent behavior. For PROFIBUS communication faults, confirm the baud rate matches the network and that termination is correct.

If the display shows errors at low temperatures, confirm the heating system is active and the ambient temperature is within -40 °C to +55 °C. Persistent issues may require factory service; contact PetroPartsOnline for guidance.

FAQ: unit Questions

Q: What is the operating temperature range of the SICK unit?

A: The SICK unit operates from -40 °C to +55 °C with the integrated heating system active, and it stores safely from -40 °C to +75 °C.

Q: What supply voltage does This unit require?

A: This unit requires a DC supply voltage of 18 V to 30 V and is reverse-polarity protected.

Q: How much power does This unit consume?

A: Power consumption is typically 25 W to 35 W when the internal heating element is active.

Q: What communication protocol does This unit use?

A: This unit uses PROFIBUS DP (EN 50170) at up to 12 Mbit/s, with 2x female M12 5-pin B-coded SPEEDCON™ connectors for In/Out.

Q: Is This unit suitable for cold-storage ASRS?

A: Yes, This unit is designed for cold-storage ASRS, with an integrated heating system for operation down to -40 °C and a 100 m measuring range on Diamond Grade reflective tape.

Contact PetroPartsOnline for parts suited to your application's requirements. Our team provides application-specific selection guidance for rugged, field-proven sensors like the SICK unit.

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