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Wago 750-439 8Di, Namur Ex I
WAGO 750-439 intrinsically safe 8-channel NAMUR digital input module for the WAGO I/O System 750 designed for hazardous area sensor monitoring.
£463.17
Why Choose the WAGO 750-439 8-Channel NAMUR Digital Input Module?
The WAGO 750-439 is a specialised 8-channel NAMUR digital input module designed for integration within the WAGO I/O System 750. It enables PLCs and industrial controllers to monitor signals from NAMUR proximity sensors and intrinsically safe field devices, providing reliable signal acquisition in hazardous industrial environments.
The module records binary signals from sensors located in Zone 0 and Zone 1 hazardous areas. NAMUR sensors, optocouplers, mechanical contacts and other intrinsically safe devices can be connected to the module, allowing safe signal monitoring in process automation systems operating in explosive atmospheres. :contentReference
Each connected sensor receives a short-circuit-protected 8.2 V supply, while integrated diagnostics detect conditions such as wire breaks and short circuits. Electrical isolation between the field and system levels further improves safety and signal reliability in demanding industrial environments. :contentReference
Key Advantages
- Specialised 8-channel NAMUR digital input module for hazardous environments.
- Compatible with NAMUR proximity sensors and intrinsically safe devices.
- Supports sensor monitoring in Zone 0 and Zone 1 hazardous areas.
- Short-circuit-protected 8.2 V sensor supply.
- Integrated diagnostics for wire-break and short-circuit detection.
- Compact DIN rail module for distributed automation systems.
Key Features
- 8 digital input channels.
- NAMUR signal interface.
- 8.2 V DC sensor supply with short-circuit protection.
- High-side switching input characteristic.
- 3 ms digital input filter.
- 2-wire NAMUR sensor connections.
- LED indicators for channel status and diagnostics.
- DIN rail mounted modular design.
Hazardous Area Sensor Monitoring
NAMUR sensors are widely used in process industries such as chemical plants, oil refineries and pharmaceutical production facilities. These sensors operate using defined current levels to represent switching states, enabling intrinsically safe monitoring of equipment located in hazardous environments.
The WAGO 750 Series modular I/O platform allows engineers to integrate hazardous area signals directly into distributed PLC networks. This architecture enables safe process monitoring while maintaining reliable communication between field devices and automation controllers.
Typical Applications
- Monitoring NAMUR proximity sensors.
- Process automation and instrumentation systems.
- Oil and gas production facilities.
- Chemical processing plants.
- Industrial safety and hazardous area monitoring systems.
Technical Specifications
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| Number of I/O | 8 | |
|---|---|---|
| Device Type | Digital I/O Module | |
| Digital Inputs | 8 | |
| Signal Type / Function | Digital | |
| Product Series | WAGO I/O System 750 | |
| IP Rating | IP20 | |
| Series | WAGO I/O System 750 | |
| Module type | NAMUR digital input module | |
| Number of inputs | 8 channels | |
| Signal type | NAMUR | |
| Sensor supply voltage | 8.2 V DC (short-circuit protected) | |
| Signal current (0) | ≤ 1.2 mA | |
| Signal current (1) | ≥ 2.1 mA | |
| Input filter | approx. 3 ms | |
| Switching hysteresis | approx. 0.2 mA | |
| Isolation | approx. 300 V between system and field levels | |
| System supply voltage | 5 V DC via system bus | |
| Field supply voltage | 24 V DC Ex i power supply | |
| Connection technology | CAGE CLAMP® spring terminals | |
| Mounting | 35 mm DIN rail | |
| Protection rating | IP20 | |
| Operating temperature | approx. 0 °C to +55 °C | |
| Explosion protection | ATEX / IECEx intrinsically safe Ex i | |
| HS Code | 85389099 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the WAGO 750-439 module used for?
The module monitors signals from NAMUR sensors or intrinsically safe devices and transmits their switching status to a WAGO controller or fieldbus coupler.
How many input channels does the module provide?
The module provides eight NAMUR digital input channels for hazardous area sensor monitoring.
Can the module be used in hazardous environments?
The module is designed for intrinsically safe circuits connected to sensors in Zone 0 or Zone 1 areas, while the I/O node itself is installed in Zone 2 or a safe area.
What sensor supply voltage is provided?
The module supplies connected NAMUR sensors with a short-circuit-protected 8.2 V DC supply.
What diagnostics are available?
The module provides LED diagnostics and can detect wiring faults such as short circuits and wire breaks on individual channels.
Trusted by Automation Engineers
WAGO 750 Series I/O modules are widely used by process automation engineers and system integrators to build reliable distributed control systems across industrial and hazardous environments.
