The Beckhoff EL1889 EtherCAT Terminal is a high-channel-count digital input module engineered for capturing multiple 24 V DC signals in industrial automation environments. With 16 inputs integrated into a single compact housing, it is designed to reduce cabinet space, streamline wiring, and provide efficient signal acquisition for distributed control systems.

Operating at a nominal voltage of 24 V DC (-15%/+20%), the EL1889 is compatible with common industrial sensors such as proximity switches, push buttons, limit switches, and photoelectric sensors. Each input draws a typical current of 3 mA, aligning with EN 61131-2 type 1/3 specifications, which ensures interoperability with a wide variety of field devices.

To ensure signal reliability, the EL1889 incorporates a 3.0 ms input filter, which eliminates the effects of contact bounce and electrical noise. This feature guarantees that only valid input states are registered, providing dependable system performance even in environments with electrical interference.

The terminal supports 1-wire connection technology, simplifying installation and making wiring both secure and efficient. Its compact design and high channel density help engineers achieve more with less space, particularly in projects requiring large numbers of digital inputs, such as packaging systems, production lines, or building automation networks.

Power for the input circuitry is supplied via the power contacts, with a typical consumption of 35 mA, while communication and control functions are supported through the E-bus, which consumes around 110 mA. This efficient distribution of power supports reliable operation without overloading the system.

As part of Beckhoff’s modular EtherCAT I/O platform, the EL1889 integrates seamlessly into automation systems. The EtherCAT protocol ensures high-speed, deterministic communication, allowing precise synchronisation of input signals with control logic. Diagnostic LEDs on the housing provide clear visual status of input channels, simplifying commissioning and fault detection.

The EL1889 is widely applicable across a variety of industries. In machine automation, it can handle high numbers of sensor inputs for monitoring equipment states. In process automation, it provides centralised signal acquisition from distributed devices. In building automation, it supports applications such as lighting control, access systems, and HVAC monitoring. Its high channel density makes it especially valuable for installations where space and efficiency are critical.

In summary, the Beckhoff EL1889 EtherCAT Terminal offers a compact, reliable, and efficient solution for acquiring multiple digital inputs. With 16 channels, 24 V DC operation, integrated input filtering, and seamless EtherCAT integration, it provides engineers with a powerful tool for managing high-channel-count applications in modern automation systems.