The AS-Interface Safety at Work system by Schmersal is a bus-based safety solution built on the open AS-Interface (AS-i) standard, designed to connect safety devices and automation components through a simple and efficient network.
In this system, safety devices such as emergency stop buttons, safety switches, solenoid interlocks, sensors, and light curtains are interconnected using a two-wire AS-i profile cable, which simultaneously carries both power and communication signals.
A central safety monitor evaluates all safety-related signals transmitted over the network and ensures that machines respond correctly to safety events. This architecture eliminates complex parallel wiring and enables a highly flexible, decentralized safety system.
One of the key advantages of the system is its ability to combine standard automation signals and safety-related data on a single network, allowing seamless integration into existing control systems.
The system also provides comprehensive diagnostics and real-time status monitoring, enabling operators to quickly identify faults, reduce downtime, and improve overall machine availability.
With flexible configuration using tools like ASIMON software, safety functions can be easily modified or expanded—even after installation—making it ideal for evolving industrial environments.
Additionally, AS-Interface Safety at Work supports high safety standards, achieving Performance Level e (PL e) and SIL 3, making it suitable for critical safety applications.
Key Features & Specifications
• Integrated safety communication system based on AS-Interface (AS-i) standard
• Single two-wire cable for power supply and data communication
• Easy connection of safety devices (E-STOPs, sensors, interlocks, light curtains)
• Central safety monitor for evaluating safety signals
• Combination of standard and safety signals on one network
• Real-time diagnostics and system transparency
• Flexible and scalable system architecture for expansion and upgrades
• Reduced wiring complexity and installation costs
• Integration with fieldbus systems (PROFINET, EtherNet/IP, Modbus, etc.)
• High safety performance up to PL e / SIL 3
• Configuration via ASIMON software with drag-and-drop functionality
Applications
AS-Interface Safety at Work by Schmersal is widely used in:
• Industrial automation and machine safety networks
• Conveyor and material handling systems
• Packaging and processing machinery
• Automotive and manufacturing assembly lines
• Robotics and automated production systems
• Smart factories and Industry 4.0 environments
The AS-Interface Safety at Work system by Schmersal provides a powerful, flexible, and cost-efficient safety solution, enabling simplified installation, advanced diagnostics, and reliable safety integration across modern industrial automation systems.
