KL1404
by Beckhoff
The Beckhoff KL1404 is a robust analog input module designed for industrial automation applications. Part of the KL Analog Input Modules series by Beckhoff, the KL1404 accommodates 4 inputs and utilizes 2-wire connection technology for simplified wiring. Operating at a nominal voltage of 24 V DC (-15%/+20%), the module efficiently acquires analog signals within demanding control systems. Its primary function is to convert field-level analog signals into digital data for programmable logic controllers, ensuring precise monitoring and control of industrial processes.
Certified to meet the EN 61131-2, type 1/3 specification, the KL1404 delivers reliable performance with signal voltage ranges of -3...+5 V (type 1/3) and 11...30 V (type 3). The module's input filter is set at typ. 3.0 ms, providing stable signal conditioning and noise suppression. It draws only typ. 3 mA on the K-bus and requires a nominal input current of typ. 3 mA per channel (EN 61131-2, type 3), making it highly energy-efficient. Unique to this design is the Atex Mark "G Ex ec IIIB T4", enabling safe use in explosive dust atmospheres and ensuring compliance with stringent hazardous-area requirements.
Durability and compatibility are central to the KL1404's design. With an IP20 protection rating, it safeguards sensitive electronics against solid objects, making it suitable for controlled industrial environments. The module operates in ambient temperatures from 0...55 °C and can be stored in conditions ranging from -25...+85 °C, demonstrating excellent thermal resilience. Its adherence to EN 61131-2 standards guarantees interoperability with a wide range of Beckhoff Bus Terminals and I/O systems. In industrial automation, the KL1404 offers precise signal conversion, minimal power consumption, and certified safety features, delivering reliable performance and increased operational uptime in complex control systems.
