AS-Interface Safety at Work: Integrated Safety up to PL e / SIL 3

Reliable Implementation of Safety Functions over a Single Cable

AS-Interface Safety at Work is an extension of the standard AS-Interface network, allowing the easy and cost-effective integration of safety functions (such as Emergency Stop, door monitoring, and light curtains) into your existing system. All standard and safety components are activated in parallel over the same two-core flat cable, significantly simplifying wiring and modernization.

Key Advantages:

• High Safety Level: Guaranteed compliance with Category 4 according to EN 954-1 and SIL3 according to IEC / DIN EN 61508 (PL e according to EN ISO 13849).

• Simplified Installation: Only one additional Safety Monitor is required to evaluate safety-relevant signals, communicating with Safety at Work components using dynamic code sequences.

• Backward Compatibility: Enables quick retrofitting of safety features even on older AS-Interface networks.

Application Industries and Examples

Safety at Work systems are mandatory wherever there is a risk of injury or equipment damage:

• Machinery and Automated Lines:

  • Example: Ensuring safety on large production lines and machine tools. ASi monitors oversee Emergency Stop buttons and safety gate interlocks, providing controlled shutdown (Category 1) or immediate stop (Category 0).

• Conveyor and Logistics Systems (Material Handling):

  • Example: Monitoring access control to hazardous zones where personnel might enter the conveyor's operating area, by installing Safety Switches and Light Curtains around the perimeter.

• Highly Automated Warehouses:

  • Example: Centralized monitoring of a large number of Emergency Stop buttons distributed across long distances via a single ASi cable.

Pepperl+Fuchs AS-Interface Safety at Work Equipment Types

Pepperl+Fuchs offers the following components to implement safety functions:

• Safety Monitors: Evaluate safety signals. Support up to two independent or dependent safety circuits and feature an LCD display for diagnostics.

• Emergency Stop Buttons: Comply with European Standard EN ISO 13850; available for flush and surface mounting.

• Safety Switches and Enabling Switches: For monitoring the position of protective doors and covers (door monitoring safety concept).

• Safety Modules: Used for connecting mechanical contacts, safe inductive sensors, and enabling a logical link between safe inputs and outputs.

Official Partner in Ukraine — CSC-Automation LLC

CSC-Automation LLC is the official distributor of Pepperl+Fuchs. We will help you design and buy a reliable AS-Interface Safety at Work system with a full factory warranty, compliant with the highest standards.