Product Description:

The EP5001-0002 is a single-channel digital input module produced by Beckhoff within the EP Digital Input Modules series. Designed for mounting directly in the machine field, it serves as an interface that captures synchronous serial encoder signals and forwards them to a controller over an industrial network. By acquiring position data from SSI encoders, the unit helps coordinate motion axes and process sensors in distributed automation systems.

Communication with the higher-level system occurs over the EtherCAT fieldbus, and the module uses a read-only data path, so the controller polls it without sending output commands. Its channel count is limited to 1, which simplifies wiring when a single feedback device must be connected. The two sensor lines enter through a waterproof connector set described as 2 x M8, 4-pin, A-coded, shielded, while differential drivers that follow the RS422/RS485 standard help preserve signal integrity. With a maximum transfer speed of 1 MHz, the unit can process high-resolution encoder signals without losing edge information. Both the internal logic and the attached sensor are powered from a common supply of 24 V DC, allowing direct connection to typical control cabinet power rails.

Up to 0.5 A of current is available on the sensor feed, and the incoming clock and data pair is compatible with the SSI protocol terminated by 120 Ω inside the housing. Synchronous acquisition across multiple modules is possible because distributed clocks are supported, which keeps edge timestamps aligned across an EtherCAT segment. The encoder connects through an M12, 8-pin socket that separates shield and signal lines from the control voltage. A PA6 polyamide housing protects the electronics, and the compact form factor of 30 × 126 × 26.5 mm eases installation on crowded cable trays.