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

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

WAGO 750-665/000-001 fail-safe 4-channel digital input and output module with PROFIsafe communication for safety automation systems.

SKU: 750-665/000-001Alt SKU: 750665000001MPN: 750-665/000-001
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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.

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.

Technical Specifications

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Signal / Input Range 24 V DC
Device Type Digital I/O Module
Coil / Supply Voltage 24 V DC
Signal Type / Function Digital
Number of I/O 8
Product Series WAGO I/O System 750
Current 0.5 A
IP Rating IP20
Series I/O System 750
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
HS Code 85371098
Country of Manufacture Germany

Frequently Asked Questions

What is the WAGO 750-665/000-001 used for?

This module provides fail-safe digital inputs and outputs allowing safety sensors and actuators to be integrated into PROFIsafe automation systems.

How many inputs and outputs does the module provide?

The module provides four fail-safe digital inputs and four fail-safe digital outputs. :contentReference

What voltage does the module operate on?

The field side operates at 24 V DC, while the system bus provides a 5 V DC internal supply. :contentReference

How are wiring faults detected?

Each input is monitored by clocked test pulse outputs that detect cross-circuits, wiring faults and unintended voltage supply conditions. :contentReference

Which automation systems support this module?

The module integrates with WAGO I/O System 750 fieldbus couplers and controllers supporting 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.