When Cold-Storage Positioning Fails at -40 °C

An automated storage and retrieval system stalls because its distance sensor drifts in the freezer aisle. Condensation forms on the optics, and the measurement cycle lags behind the stacker crane. The SICK DL100-21HA2109 answers that challenge directly. It is a phase-shift optical time-of-flight laser distance sensor from the Dx100 series, and it reaches a 100 m measuring range on Diamond Grade reflective tape.

Its integrated heating system keeps the sensor operating down to -40 °C, so cold-store positioning stays dependable through the shift.

Key Features and Technical Specifications

• Measurement principle: Phase shift optical time-of-flight laser distance measurement.
• Measuring range: 0.15 m to 100 m on Diamond Grade reflective tape.
• Repeatability: 0.5 mm to 1 mm, typically 0.5 mm at 1 σ.
• Accuracy: Typically ± 2 mm to ± 3 mm.
• Light source: Visible red laser diode at 658 nm, Class 2 per IEC 60825-1:2014 and EN 60825-1:2014, average optical power below 1 mW.
• Measurement cycle: ≥ 1 ms, with a continuous internal rate of 1 ms that depends on the fieldbus cycle.
• Tracking velocity: Up to 15 m/s, with maximum acceleration of 15 m/s².
• 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.
• Operating temperature: -40 °C to +55 °C with the heating system active; storage range is -40 °C to +75 °C.
• Enclosure rating: IP65 per EN 60529.
• Housing: Aluminum die-cast with an acrylic glass (PMMA) optical window.
• Dimensions and weight: 69.4 mm x 82.5 mm x 100.2 mm, approximately 1,000 g.

The combination of a 1 ms internal measurement rate and 15 m/s tracking velocity matters most in high-bay warehouses. Stacker cranes move fast, and the sensor must keep pace without losing position.

Where the DL100-21HA2109 Fits in Material Handling

Automated storage and retrieval systems rely on continuous position feedback along the aisle. Consequently, the SICK unit suits stacker crane travel measurement, transfer car positioning, and overhead conveyor monitoring. Cold-storage facilities benefit from the internal heater, which extends operation into freezer zones. Port and steel operations also use long-range laser positioning for gantry travel. In each case, the sensor reports distance over CANopen, so the controller receives position data directly.

CANopen Integration and Electrical Setup

The sensor communicates through a CANopen fieldbus interface following CiA DS 301 and the DS 406 profile. Power connects through a male M12 4-pin connector. CANopen In/Out uses two M12 5-pin connectors, A-coded with SPEEDCON™. Two push-pull digital outputs (PNP/NPN, configurable B/Q, ≤ 100 mA) and a multifunctional input handle auxiliary signaling.

An integrated LC display with menu navigation simplifies addressing and parameter review during commissioning. The optical 3-axis alignment bracket compatibility helps technicians square the beam to the reflective tape. Integration note: wiring into a CANopen network may require an external gateway or connection module. Confirm cables and gateways with PetroPartsOnline before ordering.

Reliability in Demanding Environments

The IP65 enclosure and die-cast aluminum housing resist dust and water spray on the plant floor. Because the heater manages condensation and frost, the optics stay clear in cold rooms. Periodic inspection should cover the PMMA window, connector seating, and the reflective tape surface. Clean the optical window only per SICK guidance, and verify the tape remains free of scuffs. These habits support the reliability you can depend on in mission-critical aisles.

Frequently Asked Questions

What is the operating temperature range of This unit?

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

What supply voltage and power does the sensor require?

The sensor accepts DC 18 V to 30 V with reverse-polarity protection, and it typically draws 25 W to 35 W when the internal heating element is active.

Is a proximity probe equivalent suitable for long-travel crane positioning?

A proximity probe equivalent such as this laser sensor measures up to 100 m on Diamond Grade tape, which suits long-travel crane and stacker positioning where short-range probes fall short.

Which communication interface does this model use?

It uses CANopen per CiA DS 301 and the DS 406 profile, with CANopen In/Out on two M12 5-pin A-coded connectors.

How accurate is the distance measurement?

Measurement accuracy is typically ± 2 mm to ± 3 mm, with repeatability of 0.5 mm to 1 mm and typically 0.5 mm at 1 σ.

Availability and Support

Please verify current lifecycle status and availability with PetroPartsOnline before ordering. Contact PetroPartsOnline for parts suited to your application's requirements.

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