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Wago 750-669/000-003 4FDI/4FRO
WAGO 750-669/000-003 fail-safe 4-channel digital input and 4-channel relay output module with PROFIsafe communication for safety automation systems.
£616.21
Why Choose the WAGO 750-669/000-003 PROFIsafe Digital Input and Relay Output Module?
The WAGO 750-669/000-003 is a fail-safe digital input and relay output module designed for safety-critical industrial automation within the WAGO I/O System 750. It provides four fail-safe digital inputs and four fail-safe relay outputs, allowing safety sensors and safety actuators to be integrated directly into PLC-based automation systems using the PROFIsafe safety protocol.
This module is particularly suited for applications requiring electrically isolated relay outputs capable of switching higher loads or mixed AC/DC voltages. The relay outputs can switch loads up to 48 VAC or 60 VDC with up to 6 A per channel, enabling direct control of safety contactors, valves and shutdown circuits. :contentReference
Each of the four digital inputs is clock-sensitive and monitored via dedicated test pulses. This ensures continuous detection of wiring faults such as short circuits, cross-circuits or unintended voltage supply conditions, providing reliable functional safety monitoring in demanding industrial environments. :contentReference
Key Advantages
- Combined fail-safe digital inputs and relay outputs in one module.
- Supports PROFIsafe communication for safety PLC integration.
- Relay outputs switch high loads up to 6 A per channel.
- Continuous monitoring for short circuits and cross-circuits.
- Electrically isolated outputs suitable for AC or DC loads.
- Designed for modular WAGO I/O System 750 control architectures.
Key Features
- 4 fail-safe digital inputs with clock-sensitive monitoring.
- 4 fail-safe relay outputs with electrical isolation.
- Load switching range: 5…60 V DC or 5…48 V AC.
- Output current up to 6 A per channel.
- Configurable safety parameters via WAGO engineering tools.
- PROFIsafe address configurable via DIP switch or software.
- Status LEDs for channel diagnostics and module status.
- DIN rail mounting for industrial automation panels.
Integrated Safety Monitoring and High-Power Switching
Safety automation systems require reliable monitoring of safety sensors and safe switching of actuators such as contactors or shutdown circuits. Relay-based safety outputs are particularly useful when switching higher loads or mixed voltage types.
The WAGO 750-669/000-003 combines fail-safe digital inputs with isolated relay outputs, enabling engineers to monitor safety signals while directly controlling high-power safety devices. This integrated design simplifies machine safety architecture while maintaining compliance with international safety standards. :contentReference
Typical Applications
- Emergency stop monitoring and machine shutdown systems.
- Safety door and guard monitoring circuits.
- Control of safety contactors and motor shutdown circuits.
- Machine safety interlock systems.
- Industrial automation safety networks.
Technical Specifications
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| Number of I/O | 4 | |
|---|---|---|
| Product Series | WAGO I/O System 750 | |
| Device Type | Digital I/O Module | |
| Output Type | Relay | |
| Signal Type / Function | Digital, Relay | |
| IP Rating | IP20 | |
| Series | I/O System 750 | |
| Module type | Fail-safe digital input and relay output module | |
| Number of inputs | 4 fail-safe digital inputs | |
| Number of outputs | 4 fail-safe relay outputs | |
| Output type | Electrically isolated relay | |
| Load voltage | 5…60 V DC / 5…48 V AC | |
| Output current | up to 6 A per channel | |
| Total switching current | up to 24 A | |
| Input current (typ.) | approx. 2.2 mA | |
| Maximum input frequency | 50 Hz | |
| Safety protocol | PROFIsafe (V1 and V2) | |
| Safety classification | up to SIL 3 / Category 4 / PL e | |
| System supply voltage | 5 V DC via system bus | |
| Field supply voltage | 24 V DC | |
| Connection technology | WAGO Push-in CAGE CLAMP® terminals | |
| Mounting | DIN-35 rail | |
| Operating temperature | 0 to 55 °C | |
| Dimensions | approx. 48 mm width | |
| Protection rating | IP20 | |
| HS Code | 85389099 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the WAGO 750-669/000-003 used for?
The module integrates fail-safe digital inputs and relay outputs into PROFIsafe automation systems, allowing safety sensors and actuators to be monitored and controlled.
How many inputs and outputs does the module provide?
The module includes four fail-safe digital inputs and four fail-safe relay outputs. :contentReference
What loads can the relay outputs switch?
The relay outputs can switch loads up to 48 VAC or 60 VDC with up to 6 A per channel. :contentReference
What safety levels can be achieved?
The module supports functional safety classifications up to SIL 3 / Category 4 / Performance Level e depending on system architecture. :contentReference
Which automation platforms support this module?
The module integrates with WAGO I/O System 750 fieldbus couplers and safety controllers using PROFIsafe communication.
Trusted by Automation Engineers
WAGO safety I/O modules are widely used in machine automation systems to implement reliable functional safety architectures compliant with international industrial safety standards.
