Operating voltage[V]: 18…30 DC; (cULus – Class 2 source required)
Current consumption[mA]: < 50
Current rating per port[A]: 0.1
Number of inputs and outputs: Number of digital inputs: 16
Number of digital inputs: 16; (8 x 2)
Input circuit of digital inputs: PNP
Sensor supply of the inputs: IO-Link

High-Density Input Module: Offers 16 digital inputs (8 x 2 configuration) for efficient signal acquisition.
PNP Input Circuit: Designed for compatibility with industry-standard sourcing-type sensors.
IO-Link Sensor Supply: Provides standardised and reliable power to connected sensors, simplifying wiring.
Low Power Consumption: Operates on 18…30 V DC with current consumption under 50 mA, rated to Class 2 source (cULus).

The IFM AL2401 is a compact, high-density digital input module designed for field applications where efficient signal acquisition, compatibility, and decentralised installation are critical. With its 16 digital inputs, low power consumption, and IO-Link sensor supply, the AL2401 provides a practical and reliable solution for modern industrial automation systems.

The module is equipped with 16 digital inputs arranged in an 8 x 2 configuration, allowing engineers to monitor a large number of signals within a single compact housing. This design makes it particularly suitable for environments where multiple sensors or switches need to be monitored simultaneously, such as assembly lines, packaging systems, or machine control processes.

The inputs are based on a PNP input circuit, a widely used standard in industrial automation. This ensures seamless compatibility with sourcing-type sensors, which are common across a wide variety of applications. By adopting PNP logic, the AL2401 provides stable and reliable signal detection, reducing the risk of false readings and ensuring consistent performance in complex automation setups.

One of the module’s key advantages is its IO-Link sensor supply. This feature allows connected sensors to receive a standardised and reliable power source directly from the module, reducing wiring complexity and improving installation efficiency. IO-Link also opens the door to advanced diagnostic and communication capabilities, providing operators with better control and visibility over sensor performance.

From a power perspective, the AL2401 is highly efficient. It operates within an 18…30 V DC supply range, with a very low current consumption of less than 50 mA. Certified for operation with a Class 2 source (cULus), the module adheres to stringent safety standards while maintaining energy efficiency. Each port supports a current rating of 0.1 A, providing sufficient capacity for standard digital input devices without overloading the system.

With a Protection Class III rating and robust construction, the AL2401 is designed to deliver reliable performance in demanding industrial conditions. Its decentralised installation capability allows it to be placed directly in the field, closer to sensors and actuators, reducing cabling runs to central cabinets. This not only saves installation costs but also improves signal integrity and system responsiveness.

In real-world use, the AL2401 proves valuable in industries such as machine building, process automation, and distributed control systems, where compact, high-input modules are essential. Its combination of 16 PNP inputs, IO-Link powered sensor supply, low current draw, and field-ready design makes it a practical and future-proof solution for engineers seeking efficient and scalable automation systems.

In summary, the IFM AL2401 delivers a reliable, compact, and energy-efficient digital input module for field applications. With its 16 inputs, IO-Link support, low power consumption, and compatibility with PNP sensors, it ensures dependable signal acquisition and smooth integration into modern industrial automation networks.