Product Description:

The Beckhoff EPI2339-0021 is a sealed digital input module from the EP Digital Input Modules series. It acts as a field-level collection point for discrete sensors, delivering their states to a PLC through an IO-Link master. By combining sixteen inputs, power distribution, and communication in one polyamide housing, the unit reduces cabinet usage, shortens sensor cabling, and supports machine architectures that need decentralized IP67 I/O.

Each of the 16 digital channels follows the EN 61131-2 Type 3 signal profile, so PNP proximity switches and similar sensors can be connected without additional adapters. Incoming signals pass through a 3 ms default filter that suppresses contact bounce before the module transmits data across the IO-Link line. Communication on COM 3 runs at a maximum rate of 230.4 kbaud, and the device supports the IO-Link V1.1 Class B specification, which separates sensor power from logic power through L+ and P24 isolation. Physical integration is handled by 16 M8 sockets for inputs and a single M12, 5-pin, A-coded interface for the IO-Link connection. With external dimensions of 60 mm × 126 mm × 26.5 mm, the housing fits easily on machine frames without occupying panel space.

The module operates from a field supply of 24 V DC and can deliver up to 0.5 A per channel to drive sensor loads such as light curtains or mechanical switches. Internally, output paths are electronically fused; if a fault draws the 1.5 A short-circuit limit, the affected channel is switched off while diagnostic information is sent upstream. Across all channels, the total current must remain within the 4 A limit to avoid thermal shutdown. Cables up to 30 m between the module and the IO-Link master are permitted, enabling distributed layouts without exceeding timing budgets. The housing achieves IP65/IP66/IP67 protection, so the device resists dust ingress and high-pressure washdown and can be installed in food, packaging, or automotive cells.