SICK DL100-21AA2112 Distance Sensor: Specifications, Installation & Maintenance Guide
Product Introduction
The SICK DL100-21AA2112 is a laser time-of-flight distance sensor engineered for demanding long-range measurement applications. As part of the SICK Dx100 product family, this sensor delivers exceptional accuracy and repeatability for industrial positioning, crane control, and material handling systems.
This sensor operates on the time-of-flight measurement principle, emitting visible red laser pulses and calculating distance based on the reflection from Diamond Grade reflective tape. With a measuring range spanning from 0.15 meters to 100 meters, the DL100-21AA2112 provides reliable performance for applications requiring precise non-contact distance measurement over extended distances.
The device features a robust industrial design with IP65 protection rating, making it suitable for deployment in challenging indoor environments including warehouses, production facilities, and automated storage systems.
Core Value
The DL100-21AA2112 delivers substantial value through its combination of measurement performance and operational reliability. The sensor achieves a measurement accuracy of ±2 mm across its specified range, with repeatability of 0.5 mm under stable conditions. This level of precision enables critical positioning tasks where small errors can impact system performance.
For high-speed applications, the sensor supports maximum movement speeds up to 15 m/s with acceleration tolerance of ≤15 m/s², ensuring stable measurement even during dynamic positioning operations. The 1 ms measurement cycle time and 2 ms response time allow real-time feedback for control systems requiring rapid data acquisition.
The integration capabilities of the DL100-21AA2112 include PROFINET connectivity and dual digital outputs configurable as PNP/NPN push-pull types. This flexibility simplifies integration with Allen-Bradley, Siemens, and Schneider Electric control platforms commonly deployed in industrial automation environments.
Technical Insights
Measurement Technology
The DL100-21AA2112 employs time-of-flight laser measurement technology with a Class 2 visible red laser source. The typical light spot size follows the formula: 5 mm + (2 mm × distance in meters), allowing effective targeting across the full measuring range.
Performance Specifications
| Parameter | Specification |
|---|---|
| Measuring Range | 0.15 m to 100 m (on Diamond Grade reflective tape) |
| Resolution | 0.1 mm, 0.125 mm, 1 mm, 10 mm, 100 mm (freely adjustable) |
| Repeatability | 0.5 mm |
| Measurement Accuracy | ±2 mm (±4 mm in 150-180 mm range) |
| Response Time | 2 ms |
| Measurement Cycle | 1 ms |
Electrical Characteristics
The sensor operates on 18-30 V DC with current consumption below 250 mA at 24 V DC. The 6-digit 5×7 dot matrix display and LED indicators provide local status information and configuration feedback.
Interface Configuration
Two digital outputs support Distance (switching output), Speed (speed output), and Service functions for warning messages related to laser aging, contamination, temperature limits, or measurement plausibility errors. A multifunction input (MF1) allows external control functions including Laser Off and Preset operations.
Installation & Maintenance
Mounting Procedure
Proper installation begins with selecting a mounting location that maintains clear line-of-sight between sensor and reflector. The DL100-21AA2112 should be mounted using the optional alignment bracket, which provides three-axis adjustment capability for precise alignment.
Mount the alignment bracket using the four slotted holes with supplied M5 screws. Insert the sensor into the bracket and secure with the star grip screw, then tighten the knurled nut to fix the position. The adjustment screws allow ±2° adjustment in X-direction and ±3.5° in Y-direction.
Reflector Alignment
Align the sensor so the laser spot hits the center of the Diamond Grade reflector at close range, then increase distance while maintaining spot centering. The received signal level should be monitored using the attenuation value displayed in the main menu. For a 100-meter distance, typical signal attenuation is approximately -72 dB with maximum acceptable attenuation of -77 dB.
Multiple Sensor Installation
When installing multiple DL100 sensors, maintain minimum spacing to prevent optical interference. The required distance follows the formula: a ≥ 100 mm + 0.01 × Smax (maximum scanning range). For the DL100-21AA2112 with maximum range of 100,000 mm, this equates to minimum spacing of 700 mm when light beams are in the same direction.
Maintenance Requirements
Regular inspection of the sensor viewing window and reflector surface ensures optimal performance. Contamination increases signal attenuation and may trigger service warnings. Clean optical surfaces with appropriate lens cleaning materials. The sensor provides early warning when the laser ages or when attenuation reaches critical levels, allowing preventive maintenance before measurement reliability degrades.
Buyer's Guide FAQ
Q1: What is the actual maximum measuring distance of the DL100-21AA2112?
The specified measuring range is 0.15 m to 100 m on Diamond Grade reflective tape. According to SICK technical support, the DL100-21XXXXXX variants can measure up to approximately 110,000 mm (110 m) under optimal alignment and clean optical conditions before outputting a plausibility error.
Q2: Can this sensor operate in outdoor environments?
No. The DL100-21AA2112 is specified for indoor applications only. For outdoor deployment, ambient light conditions and environmental factors require alternative sensor models with appropriate sealing and light immunity ratings.
Q3: What reflective tape should be used with this sensor?
The DL100-21AA2112 requires Diamond Grade reflective tape (DG983) for proper operation. Standard reflective materials will not provide sufficient return signal for the 100-meter measuring range. The reflector size should be selected based on mounting stability and vibration conditions.
Q4: How does the sensor handle high-speed moving targets?
The DL100-21AA2112 supports maximum movement speeds of 15 m/s and acceleration up to 15 m/s². The 1 ms measurement cycle time and 2 ms response time enable reliable tracking of fast-moving objects, making it suitable for crane positioning, AGV navigation, and conveyor applications.
Q5: What PROFINET capabilities does the DL100-21AA2112 offer?
This sensor supports PROFINET communication for integration with industrial control systems. Configuration and diagnostic data can be accessed through the PROFINET interface, and process data is transmitted synchronously to the PLC. The SICK SOPAS ET configuration software provides additional parameterization and monitoring capabilities.
