SICK DL50-N2228 | Dx50 Long Range Sensor

SICK DL50-N2228 Dx50 Retro-reflective Sensor

Product Introduction

The SICK DL50-N2228 is a long-range retro-reflective sensor from the Dx50 series. It shares the same platform as the DL50-P2228 but uses an NPN digital output. Moreover, HDDM optical time-of-flight technology delivers high-precision distance readings. The rugged metal housing and internal heater suit heavy-duty and cold-storage applications.

Technical Specifications

The DL50-N2228 measures from 200 mm to 50,000 mm on diamond grade reflective tape. This 50 m range supports large cranes, conveyors, and storage systems. Furthermore, the light source is a visible red laser diode at 658 nm. The laser is Class 1 and eye-safe per IEC 60825-1:2014 and EN 60825-1:2014. Pulse peak power is 120 mW, with a pulse duration of 2.5 ns.

Response time depends on the averaging setting. Values include 15 ms, 30 ms, and 80 ms. Repeatability is ≥ 1 mm, and measurement accuracy is ± 3 mm. A high-resolution LC display and menu buttons simplify parameter setup.

Outputs and Interfaces

The DL50-N2228 provides one digital NPN output rated at ≤ 100 mA. Additionally, it offers an RS-422 serial communication interface. A multifunctional input supports extra control functions.

Supply voltage is DC 24 V, with an operating window of 18 V to 30 V. However, the internal heating element needs Vs above 15 V. Power consumption reaches ≤ 28 W when the heater runs without external load. The electrical connection uses an M12, 8-pin male connector.

Mechanical and Environmental Parameters

The housing measures 36.1 mm x 62.7 mm x 57.7 mm. It uses zinc die-cast ZNAL4CU1 with an acrylic glass PMMA window. The device weighs about 200 g. The enclosure rating is IP65 per EN 60529.

Operating temperature ranges from –40 °C to +65 °C with the integrated heater. With two cooling plates, the range extends to –40 °C to +80 °C. With two cooling plates and a protection filter, it reaches –40 °C to +140 °C. Storage temperature ranges from –40 °C to +75 °C.

Installation Guide

First, mount the DL50-N2228 on a stable bracket facing the reflective tape. Next, connect the M12, 8-pin connector to a 24 V DC supply. Then, align the sensor using the visible red laser spot. The LC display helps confirm signal quality during setup.

After alignment, set the averaging mode through the menu buttons or RS-422. For instance, choose Fast, Medium, or Slow to balance speed and stability. Meanwhile, verify the heater supply if you work in cold storage. Finally, test the NPN output against the actual target position.

Packaging List

• 1 x SICK DL50-N2228 Retro-reflective Distance Sensor

• 1 x Quick start guide

• 1 x Mounting bracket set

• 1 x M12 8-pin connector

Shipping
Fedex, UPS, DHL

FAQ

Q1: What is the measuring range of the DL50-N2228?
A1: The DL50-N2228 measures from 200 mm to 50,000 mm. However, this range requires diamond grade reflective tape as the target.

Q2: How does the DL50-N2228 differ from the DL50-P2228?
A2: The DL50-N2228 uses an NPN digital output, while the DL50-P2228 uses PNP. All other specifications, including the RS-422 interface, remain the same.

Q3: Does this sensor work in cold storage?
A3: Yes, the DL50-N2228 has an integrated heater. It operates down to –40 °C, and optional cooling plates extend the upper limit to +140 °C.

Q4: What is the measurement accuracy?
A4: The DL50-N2228 delivers ± 3 mm accuracy with ≥ 1 mm repeatability. These values suit high-precision positioning tasks.

Q5: What supply voltage does the heater need?
A5: The DL50-N2228 runs on DC 24 V, with a range of 18 V to 30 V. However, the internal heating element requires Vs above 15 V.