Weidmuller’s Qilin QL20 series remote I/O has officially received UL certification, confirming that it meets the rigorous safety and reliability standards of both China and the international market.
The client, a Tianjin-based company, specializes in the R&D and manufacturing of performance testing equipment for wheels and tires. Their systems are primarily used for long-duration, cyclic testing—evaluating factors such as tire strength, durability, and dynamic performance—and are controlled by an EtherCAT-based PLC system. Given the large number of workstations and the fact that sensors and actuators are distributed throughout the machinery—combined with a factory environment prone to dust and oil—the client sought to achieve a more compact equipment design by eliminating the need for traditional control cabinets.
Why is UL certification particularly valuable for equipment manufacturers?
With UL certification, the QL20 series eliminates the need for redundant evaluations and additional documentation during the overall equipment certification process, streamlining the import and export of projects.
Simplified Selection Through Standardization
For equipment manufacturers serving both domestic and overseas markets, the primary challenge often lies in the need to manage two separate sets of requirements.
Discrepancies in compliance standards between domestic and export projects can easily lead to dual product selection and inventory management—forcing R&D teams to conduct redundant testing, procurement teams to manage separate supply chains, and complicating overall inventory control.
The QL20 series offers a unified solution, enhancing efficiency across R&D, procurement, and supply chain management.
Certification Is the Outcome; The Product Itself Is the Highlight
The QL20 series is a remote I/O product developed and manufactured locally, specifically for the domestic market. From initial design to testing and mass production, the development team remained deeply engaged with real-world industrial automation conditions in China, consistently incorporating feedback from frontline customers.
Key Features and Modular Configurations:
1. 17 module types: Covers a wide range of data acquisition and control requirements, offering flexible adaptation to diverse application scenarios.
2. Dual-bus protocol support: Compatible with Profinet and EtherCAT protocols, enabling rapid integration with mainstream automation control systems.
3. PUSH IN connection technology: Facilitates quick wiring and maintenance, reducing cabinet wiring time and boosting assembly efficiency.
4. High-precision analog data acquisition: Supports flexible multi-range configuration and is compatible with various types of temperature sensors, meeting the data acquisition needs of complex industrial environments.
5. Compact design: Features an IP20 protection rating, making it ideal for high-density installation in control cabinets and ensuring stable performance across China’s diverse industrial landscape. 6: Broad Platform Compatibility: Supports mainstream industrial control and development platforms—including TIA Portal, TwinCAT, Sysmac Studio, CODESYS, and ACS—thereby simplifying system integration and project implementation.
Since its launch, the QL20 series of remote I/O modules has been deployed in large volumes across a wide range of industries, including lithium battery manufacturing, photovoltaics, construction machinery, logistics equipment, woodworking machinery, printing, and semiconductor-related sectors.
Post time: Oct-21-2026