The SICK WL4-3P2130 (Article ID: 1028146) is a high-performance, Type 4 safety light curtain from SICK's proven WL4 series. It is designed to provide reliable personnel protection for industrial machinery and automated applications.
ey Features & Technical Specifications:
Function: Through-beam photoelectric safety sensor (ESPE - Electro-Sensitive Protective Equipment). It consists of a separate Transmitter and Receiver that create a curtain of infrared light beams. An interruption of any beam triggers a safety stop signal.
Protective Field Height: 2130 mm (approx. 83.8 inches). This tall profile makes it ideal for safeguarding large access points, such as full-body access to a robotic cell or a large machine opening.
Resolution: 30 mm (approx. 1.18 inches). This beam spacing is certified for finger and hand protection (according to ISO 13855), effectively preventing access and reducing the risk of crushing and shearing injuries.
Safety Ratings: It achieves the highest performance levels, ensuring utmost reliability:
Safety Integrity Level (SIL): SIL 3 as per IEC 61508 / IEC 62061
Performance Level (PL): PL e as per ISO 13849-1
Design & Build: Features a robust, industrial housing designed to withstand harsh environments. It typically includes a bright status LED indicator for easy diagnostics and troubleshooting.
Outputs: The safety output is typically an OSSD (Output Signal Switching Device)—a dual-channel semiconductor output that controls the machine's safety circuit.
Muting Function: The system supports advanced integration capabilities, including muting, which allows for the temporary, safe suspension of the safety function for automated material handling (e.g., allowing pallets to pass through without triggering a stop).
Typical Applications:
This light curtain is commonly used to secure hazardous areas on:
Press Brakes and Stamping Presses
Robotic Workcells and Automated Assembly Lines
Material Handling and Packaging Machinery
Automated Guided Vehicle (AGV) loading/unloading zones