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Wago 750-428 4Di, 42 Vac/Vdc 20ms
WAGO 750-428 4-channel digital input module for the WAGO I/O System 750 supporting AC/DC signals up to 42 V with 20 ms noise-rejection filtering.
£90.55
Why Choose the WAGO 750-428 4-Channel Digital Input Module?
The WAGO 750-428 is a versatile 4-channel digital input module designed for the WAGO I/O System 750. It allows industrial PLCs and controllers to monitor AC or DC control signals up to 42 V from sensors, switches and machine contacts, enabling reliable signal detection across industrial automation systems.
The module receives digital signals from connected field devices and transmits their switching state to a WAGO fieldbus coupler or programmable controller. Each input channel includes an integrated noise-rejection filter with a 20 ms time constant, helping ensure stable signal processing in electrically noisy industrial environments. :contentReference
Engineered for modular distributed I/O architectures, the module offers electrical isolation between system and field levels and uses WAGO CAGE CLAMP® spring pressure connection technology to provide secure vibration-resistant wiring. Its slim 12 mm DIN rail housing allows high-density installation in industrial control cabinets. :contentReference
Key Advantages
- Reliable 4-channel digital input module for automation systems.
- Supports AC or DC control signals up to 42 V.
- 20 ms noise-rejection input filter improves signal stability.
- High-side switching input characteristic for sensor connections.
- CAGE CLAMP® spring terminals ensure secure maintenance-free wiring.
- Compact DIN rail design for distributed I/O installations.
Key Features
- 4 digital input channels.
- 42 V AC/DC signal voltage.
- 20 ms digital input filter.
- High-side switching input configuration.
- Supports 2-wire sensor connections.
- LED indicators for channel status.
- DIN rail mounted modular design.
- CAGE CLAMP® spring pressure connection technology.
Industrial AC/DC Signal Monitoring
Digital input modules allow industrial controllers to detect the status of switches, sensors and machine contacts by converting electrical signals into digital data for PLC processing. Modules that support both AC and DC signals provide additional flexibility when integrating different control circuits within automation systems.
The WAGO 750 Series modular architecture allows engineers to build scalable distributed I/O systems. Additional modules can be added easily as automation systems expand, enabling efficient wiring, flexible system design and reliable industrial signal monitoring.
Typical Applications
- Monitoring machine switches and relay contacts.
- PLC signal acquisition in industrial machinery.
- Detection of AC or DC control circuit states.
- Distributed I/O systems for factory automation.
- Industrial infrastructure and facility automation.
Technical Specifications
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| Number of I/O | 4 | |
|---|---|---|
| Product Series | WAGO I/O System 750 | |
| Device Type | Digital I/O Module | |
| Digital Inputs | 4 | |
| Signal Type / Function | Digital | |
| IP Rating | IP20 | |
| Series | WAGO I/O System 750 | |
| Module type | Digital input module | |
| Number of inputs | 4 channels | |
| Signal voltage | up to 42 V AC/DC | |
| Voltage range (signal 1) | approx. 30 to 53 V AC/DC | |
| Input current | approx. 3.6 mA (AC) / 6 mA (DC) | |
| Input filter | approx. 20 ms | |
| Input characteristic | High-side switching | |
| System supply voltage | 5 V DC via system bus | |
| Isolation | approx. 500 V between system and field levels | |
| Connection technology | CAGE CLAMP® spring terminals | |
| Mounting | 35 mm DIN rail | |
| Module width | approx. 12 mm | |
| Protection rating | IP20 | |
| Operating temperature | approx. 0 °C to +55 °C | |
| HS Code | 85389099 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the WAGO 750-428 module used for?
The module receives digital signals from sensors, switches or relay contacts and sends their status to a WAGO controller or fieldbus coupler.
How many input channels does the module provide?
The module provides four digital input channels, allowing multiple field signals to be monitored simultaneously.
What voltage signals does the module support?
The module is designed to detect AC or DC signals up to 42 V, making it suitable for a wide range of industrial control circuits.
What is the purpose of the 20 ms input filter?
The input filter prevents short electrical noise spikes from being interpreted as valid signals, ensuring reliable signal detection.
How is the module installed?
The module mounts onto a standard 35 mm DIN rail and uses WAGO CAGE CLAMP® spring terminals for secure wiring.
Trusted by Automation Engineers
WAGO 750 Series I/O modules are widely used by system integrators and machine builders to create scalable distributed control systems across industrial automation and manufacturing environments.
