Pepperl+Fuchs AS-Interface I/O Modules with Advanced Diagnostic Features

Pepperl+Fuchs popular KE-style enclosure-mount AS-Interface I/O modules are now available with advanced diagnostic features to help minimize troubleshooting and maximize run-time. With these redesigned modules, should an output wire be disconnected, switchable lead breakage detection automatically sends the peripheral fault signal to the upper level controller. Any input pulse or noise spike of less than 2 ms is automatically filtered out by input pulse suppression. Advanced diagnostic LEDs alert the user to reverse polarity, overload or short circuit conditions that corrective action can be quickly taken.


The KE-style AS-Interface modules feature 4 inputs and 4 outputs, and boast a narrow 22.5 mm housing ideal for cramped enclosures, and that includes removable, mechanical and color coded terminals for easy installation. Additional features include:

  • Communication monitoring
  • Inputs for 2- and 3-wire sensors
  • Addressing jack
  • Power supply of outputs from the external auxiliary voltage
  • Selectable supply to the sensors: external or from the module
  • Function display for bus, external auxiliary voltage, internal sensor supply, inputs and outputs

AS-Interface is a simple wiring replacement technology that allows a single 2-wire cable to carry up to 248 inputs and 248 outputs. Enclosure-mount I/O modules are used to connect sensors and actuators to AS-Interface, and are ideal for tight enclosure applications.

Pepperl+Fuchs is a world leader in the design, manufacture and application of high quality factory and process automation products and services. Pepperl+Fuchs pioneered the development of proximity sensors 50 years ago, and has set the standard for innovation and quality ever since.

Pepperl+Fuchs, 1600 Enterprise Parkway, Twinsburg, OH 44087; (330) 486-0001; fax: (330) 405-4710;;