SICK ZLD18-4FZ4A8 Retro-Reflective Photoelectric Sensor

SICK ZLD18-4FZ4A8 Photoelectric Retro-Reflective Sensor – Compact M18 with Polarizing Filter

The SICK ZLD18-4FZ4A8 photoelectric retro-reflective sensor is a compact M18 solution designed for precise and dependable object detection in limited installation spaces. Using a dual-lens optical concept, it achieves stable sensing over long distances while maintaining a short minimum reflector spacing. The visible red light source supports quick alignment during setup, and the built-in polarizing filter helps ensure consistent detection of reflective targets. With a rugged IP67-rated housing and low power consumption, this sensor is engineered for continuous operation in demanding industrial automation environments.

Designed for fast-moving production lines, the SICK ZLD18-4FZ4A8 delivers rapid signal response to accurately detect products without slowing throughput. Its dark-switching PNP output simplifies PLC integration and reduces wiring complexity. The polarizing filter significantly lowers the risk of false switching caused by glossy surfaces, improving process stability. Compact dimensions allow easy integration into conveyors, packaging machines, and automated handling systems. Combined with wide temperature tolerance and sealed construction, the sensor helps minimize unplanned downtime while supporting reliable, long-term operation in harsh factory conditions.

Why SICK ZLD18-4FZ4A8?
The SICK ZLD18-4FZ4A8 is chosen when reliability must fit into tight spaces without compromise. Its compact M18 design, dual-lens optics, and polarizing filter work together to deliver stable detection even in visually challenging environments. Fast response, low power consumption, and industrial-grade sealing make it a practical long-term solution for machines that demand consistent performance, minimal adjustment, and smooth integration into modern automation systems.

What problem does it solve?
It solves the common challenge of unreliable object detection caused by reflective surfaces, limited mounting space, and high-speed motion. The sensor prevents false signals from shiny materials, maintains accurate switching at rapid cycle times, and operates consistently in dusty or humid conditions. This allows production lines to run continuously, reduces sensor-related stoppages, and improves overall process efficiency without adding mechanical or electrical complexity.

Key Features & Specifications – SICK ZLD18-4FZ4A8: Part Number 1099298

Download SICK ZLD18-4FZ4A8 (1099298) Datasheet

Commercial Information – SICK ZLD18-4FZ4A8: Part Number 1099298

The Applications

1. High-Speed Carton Detection on Conveyor Lines

In automated packaging environments, accurately detecting cartons moving at high speed is essential to prevent collisions and sorting errors. The SICK ZLD18-4FZ4A8 is commonly installed along conveyor sections where space is limited and products move in close succession. Its fast response time enables reliable detection of tightly spaced cartons, while the polarizing filter helps avoid false switching caused by glossy packaging or printed surfaces. The compact M18 housing simplifies mechanical integration, and the sealed construction supports stable operation in dusty production areas, helping maintain smooth material flow and reduce unexpected line interruptions.

2. Pallet Presence Monitoring in Intralogistics Systems

Automated material handling systems depend on precise pallet detection to coordinate transfers, lifts, and accumulation zones. The SICK ZLD18-4FZ4A8 supports this task by offering stable retro-reflective sensing over extended distances, allowing safe mounting away from impact-prone areas. Its optical design ensures consistent performance even when pallet surfaces vary in color or texture. Dark-switching logic helps distinguish pallets from background structures, reducing false signals. This improves system reliability, enhances operational safety, and ensures accurate control in high-throughput intralogistics installations.

3. Bottle and Container Detection in Filling Machines

Filling and packaging machines often struggle to detect containers made from clear or reflective materials. The SICK ZLD18-4FZ4A8 addresses this challenge through its polarizing filter and visible red light, which together improve detection stability before filling or capping operations. The sensor’s high switching capability supports rapid indexing speeds without missed detections. Its compact size allows installation in tight mechanical layouts near moving components. This results in more accurate process timing, reduced product waste, and improved consistency in high-volume beverage and liquid packaging lines.

4. Part Position Verification in Automated Assembly Cells

Automated assembly systems require reliable confirmation that components are correctly positioned before critical operations begin. The SICK ZLD18-4FZ4A8 is well suited for part position verification thanks to its short minimum reflector distance and stable sensing behavior. It detects components consistently despite variations in surface finish, minimizing false positives. The robust electrical protection and wide operating temperature range support continuous use near machinery that generates heat or vibration. This improves assembly accuracy, prevents machine faults, and helps maintain consistent product quality in automated manufacturing environments.

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