EP1809-0042 Beckhoff
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The Beckhoff EP1809-0042 digital input module is part of the EP Digital Input Modules series and provides 16 digital inputs with a rated input voltage of 24 VDC. It features a control voltage of 24 VDC, uses PA6 polyamide material, and supports EtherCAT connections through two M12 sockets. The module dimensions are 60 x 150 x 26.5 mm and it allows a maximum sensor supply of 0.5 A.
Internal Product Review
The EP1809-0042 is a Beckhoff digital input module with 16 digital inputs at 24 VDC, making integration with standard industrial sensors straightforward. A 3 ms input filter and 6 mA input current support clean signal acquisition and dependable field performance. EtherCAT connectivity through dual M12 sockets and a PA6 polyamide housing make this module a strong choice for distributed I/O.
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Product Description:
The EP1809-0042 is a digital input module manufactured by Beckhoff and assigned to the EP Digital Input Modules series. The device has a small form factor and links machine-mounted switches or sensors to an EtherCAT network, converting their states into deterministic bus data for higher-level controllers. By situating the input electronics directly on equipment, the module helps reduce centralized wiring and supports distributed signal acquisition in automated lines.
The input side operates at a logic level of 24 VDC, which matches both the control rail and the dedicated digital input supply. A total of 16 channels are available, allowing one housing to supervise multiple photoelectric sensors, proximity switches, or push buttons. The module connects to the EtherCAT network through 2 × M12 shielded sockets, which receive bus communications and forward telegrams to the next node in line. Every input draws only 6 mA, keeping sensor loading low, and the built-in debounce network suppresses contact chatter with a fixed propagation delay of 3 ms. The electronics consume approximately 130 mA from the system supply, which should be included when calculating the total load on the control-power branch.
Eight sensor groups connect through 8 × M12 five-pin sockets situated along the front edge, simplifying single-cable routing for signals and sensor power. The enclosure measures 60 × 150 × 26.5 mm and is molded from PA6 polyamide, providing a sturdy yet lightweight body for machine-mounted installations. Field power reaches the module through a 7/8-inch five-pin plug and continues to downstream equipment through a matching socket. The combined output available for sensor excitation is limited to 0.5 A, so the connected sensor loads must remain within that current limit. The Us branch supply can carry up to 16 A at 40 °C before derating is required, allowing several modules to share the same supply string without exceeding the conductor capacity. The separate connections for EtherCAT communication, sensor inputs, and field power help organize cable routing around the module while maintaining access to each interface.
