Wago 750-665/000-001 4Fdi/4Fdo, 24 Vdc 0.5A

Why Choose the WAGO 750-665/000-001 PROFIsafe Digital Input and Output Module?

The WAGO 750-665/000-001 is a fail-safe 4-channel digital input and 4-channel digital output module designed for safety-critical industrial automation systems using the WAGO I/O System 750. It enables safety sensors, emergency stop circuits, guard switches and safety actuators to be integrated into PLC-based control systems using the PROFIsafe safety protocol.

This module combines four clock-sensitive safety inputs and four fail-safe power outputs, allowing both monitoring and control of safety devices from a single module. Each input channel is monitored by dedicated test pulses, enabling detection of wiring faults such as cross-circuits or external voltage supply conditions to ensure reliable functional safety operation. :contentReference

With integrated diagnostics LEDs and electrical isolation between field wiring and system electronics, the module provides reliable safety monitoring and control within distributed automation architectures. :contentReference

Key Advantages

• Combined fail-safe digital input and output module.
• Supports PROFIsafe communication for safety PLC integration.
• Continuous monitoring for cross-circuits and wiring faults.
• Controls safety actuators via four fail-safe outputs.
• Electrical isolation between system bus and field devices.
• Compact DIN rail module for WAGO I/O System 750 installations.

Key Features

• 4 fail-safe digital inputs with test pulse monitoring.
• 4 fail-safe power outputs rated up to 0.5 A.
• Clock-sensitive inputs using dedicated pulse outputs.
• Continuous detection of cross-circuits and external voltage supply.
• Status LEDs indicating channel activity and system faults.
• Configurable PROFIsafe address via DIP switch.
• Short-circuit protected clock outputs.
• DIN rail mounting for modular control cabinet installations.

Technical Specifications

• Manufacturer: WAGO
• Series: I/O System 750
• Model: 750-665/000-001
• Module type: Fail-safe digital input/output module
• Number of inputs: 4 fail-safe digital inputs
• Number of outputs: 4 fail-safe digital outputs
• Signal voltage: 24 V DC
• Output current: up to 0.5 A per channel
• Safety protocol: PROFIsafe
• Achievable safety classes: up to Cat. 4 / SIL 3 depending on configuration
• Input current (typ.): approx. 2.2 mA per channel
• Switching frequency: up to approx. 5 Hz (resistive load)
• System supply voltage: 5 V DC via system bus
• Field supply voltage: 24 V DC
• Connection technology: WAGO CAGE CLAMP® terminals
• Mounting: DIN-35 rail
• Protection rating: IP20
• Operating temperature: 0 to 55 °C
• Module width: approx. 24 mm

Integrated Safety Monitoring and Control

Safety automation systems require reliable monitoring of sensors and safe control of actuators to ensure machinery operates within safe conditions. Safety I/O modules form the interface between physical safety devices and the safety PLC controlling the machine.

The WAGO 750-665/000-001 enables both monitoring and control within the same module by combining fail-safe inputs and outputs. This design simplifies safety system architecture while maintaining compliance with international functional safety standards. :contentReference

Typical Applications

• Emergency stop circuits in industrial machines.
• Safety door and guard monitoring systems.
• Control of safety contactors and actuators.
• Machine safety interlock systems.
• Distributed safety automation networks.

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.