WAGO 750-431 input terminal 8-channel digital 0.08–2.5 mm² light grey content_copy

The WAGO 750-431 is an 8-channel digital input terminal for use in industrial automation systems. It is designed for processing digital input signals in the voltage range of 24 V DC and enables fast signal processing with a switching time of 0.2 ms. The terminal is configured as positively actuated, meaning that an output signal is activated when the input voltage state changes to High (24 V). The connection type is via a single-wire connection, which allows for compact and efficient cabling. The terminal is finished in light grey, making it visually compatible with standard industrial environments.

Applications
This terminal is suitable for applications in industrial automation, particularly in control systems that capture digital signals from sensors, pushbuttons, or other binary signal sources. It is commonly used in machine building, manufacturing plants, and process control systems where reliable and fast detection of state changes is required. The 8-channel configuration allows simultaneous processing of multiple input signals, increasing system density and reducing the number of required modules.

Functions and Features in Detail
The 750-431 features eight independent input channels, each designed for capturing a digital signal. The switching time of 0.2 ms ensures precise and timely response to signal changes, which is important for dynamic processes. The positively actuated logic ensures that the output is activated only when the input voltage state rises to 24 V. The terminal is designed for a single-wire connection, where the signal and ground wire are routed through the same connection point, simplifying cabling and reducing space requirements. The terminal is rated for cross-sections from 0.08 to 2.5 mm², covering a wide range of cable types.

Technology Explained Simply
The terminal operates at 24 V DC, a standard in industrial electronics that offers good noise immunity and reliable signal transmission. The switching time of 0.2 ms is critical for applications requiring fast responses, such as motion control or capturing short pulses. The positively actuated logic is a common configuration where the output signal is active only when the input voltage state changes to High (24 V). The single-wire connection reduces the number of required wires, as signal and ground are routed through the same connection, simplifying installation and reducing error potential.

Compatibility and Accessories
The terminal is part of the WAGO 750 system and can be combined with other modules in this system to build complex automation systems. Compatible accessories include system enclosures such as the 850-836 I/O polyester system enclosure 324 mm or the 850-825 I/O aluminium system enclosure 160 mm, which are used for mounting and protecting the modules. Other suitable components include shielded terminal clamps such as the 790-216, labelling carriers such as the 750-103, and mounting rails such as the 210-118 steel mounting rail 35x15 mm. These components enable structured and secure installation in an enclosure.

Mounting and Installation
The terminal is mounted on a standard mounting rail (e.g. 35 mm DIN rail) using an integrated clamping mechanism. Wiring is done via the designated terminal clamps, which are rated for cross-sections from 0.08 to 2.5 mm². Cables are inserted into the terminals and tightened using a tool (e.g. screwdriver or cable cutter). Installation takes place in a closed enclosure, where the terminal should be protected from mechanical stress and environmental influences.

Operational Advantages
The terminal offers high reliability and fast signal processing, which is crucial for industrial automation. The 8-channel configuration enables compact system design, reducing the number of modules and simplifying maintenance. The use of a single-wire connection reduces cabling complexity and minimizes error sources. The positive switching logic is standard in many applications and ensures clear signal assignment. The light grey finish supports visual integration into existing systems.

General
Number of channels	8
Operating voltage	24 V DC
Switching time	0,2 ms
Switching logic	positive switching
Connection type	1-wire connection
Cable cross-section	0,08–2,5 mm²
Colour	Light grey

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