AS-Interface

AS-Interface (ASi): Efficient Communication at the Sensor/Actuator Level

Simplified Wiring and Decentralized I/O

AS-Interface (Actuator Sensor Interface) is an international standard and a simple, cost-effective solution for connecting sensors and actuators at the field level. It is a decentralized bus that replaces complex conventional wiring, using only a two-core, flat cable for both power supply and data transmission.

Key Advantages of the ASi System:

  • Cost Savings: Significant reduction in wiring, installation time, and planning effort.

  • Flexible Connection: ASi modules connect easily at any point along the flat cable using piercing technology without additional connectors.

  • Topology Freedom: Supports any network structure (star, ring, or line).

  • Compatibility: ASi is an open standard and integrates easily with all common fieldbus protocols via Gateways.

  • Integrated Safety (AS-i Safety at Work): AS-Interface supports secure data communication up to PL e / SIL 3.

Application Industries and Examples

Pepperl+Fuchs AS-Interface systems are ideal for large and distributed systems where a high number of simple binary or analog I/Os need to be connected.

  • Logistics and Material Handling:

    • Example: Automation of conveyor systems in sorting centers. ASi G20 modules for motorized drive rollers allow controlling each conveyor segment and implementing "Zero Pressure Accumulation" (ZPA) logic to prevent collisions.

  • Automotive Industry:

    • Example: Welding lines, painting lines, and conveyors. ASi provides fast and flexible connection for a large number of limit switches, proximity sensors, and stack lights at workstations.

  • Food & Beverage and Packaging:

    • Example: Connection of valves, limit switches, and controls. Due to high protection ratings (up to IP69K), including the world's smallest G10 series modules, ASi is suitable for wash-down areas.

  • Machinery and Machine Tool Automation:

    • Example: Integration of control panels and signal lamps. Pushbutton boxes and stack lights with integrated ASi interface connect directly to the network.

Pepperl+Fuchs AS-Interface Equipment Types

The AS-Interface portfolio includes all necessary components for network setup:

  • Gateways: For connecting ASi to higher-level networks (PROFINET, EtherNet/IP, EtherCAT, MODBUS TCP).

  • Power Supplies and Extenders: Models with integrated data decoupling (from 2.8 A to 8 A).

  • Modules: For cabinet installation (IP20) and field mounting (IP67/69K), including the world's smallest G10 and G20 motor control modules.

  • Safety Components (Safety at Work): Safety sensors, monitors, and Emergency Stop buttons, certified up to PL e/SIL 3.

  • Indication / Operation: Pushbutton boxes and stack lights with direct ASi connection.

  • Accessories: Flat cables, passive distributors, and handheld addressing devices.


Official Partner in Ukraine — CSC-Automation LLC

CSC-Automation LLC is the official distributor of Pepperl+Fuchs. Buy AS-Interface components with a full factory warranty and optimize the cost and installation time of your systems!