Product Description:

The EPP1008-0002 digital input module is produced by Beckhoff and belongs to the EPP EtherCAT P Box Modules series. It interfaces binary sensors to an EtherCAT P network by merging communication and 24 V DC auxiliary supply on the same four-wire line. The unit provides remote data acquisition for sensors and other on/off field devices mounted on moving or distributed machinery. Placing the module close to devices reduces cabinet wiring and lets the controller receive cycle-synchronous updates needed for precise sequence control in industrial automation cells.

In operation, the module accepts 8 discrete input channels, allowing direct connection of proximity switches, buttons, or light curtains without external splitters. Each channel draws only 6 mA at 24 VDC, minimizing load on upstream sensor supplies and permitting long cable runs. A built-in digital debounce of 3.0 ms filters out contact chatter so the controller receives stable state transitions. Field devices plug into four coded connectors, and the housing offers 4 x M12 sockets that group two inputs per port for orderly wiring. Input circuitry complies with Type 3 (EN 61131-2), so it tolerates residual sensor currents and maintains clear switching thresholds.

For installation inside cable chains or tight machine frames, the enclosure width is only 30 mm, while its depth is 26.5 mm and its height reaches 126 mm. Power for the logic section is drawn from the Us segment, and the electronics require just 100 mA, so multiple modules can be linked without overloading the 24 V DC feed. Additional parameters, such as 0.5 A total sensor supply and 3 A permissible Up or Us currents, support clusters of three-wire sensors along a single trunk. Two P-coded M8 connectors pass the EtherCAT P line through and allow a daisy-chain topology without extra distribution boxes.