Schneider AS-B805-016 is a discrete input module used in Schneider Electric’s Modicon PLC (Programmable Logic Controller) systems. It is a core component specifically designed to transmit on/off field signals—such as push buttons, limit switches, and sensor contact states—to the PLC controller.

Below are the key technical specifications and application notes for this module:

1. Basic Specifications

• Model: AS-B805-016
• Type: Discrete Input Module
• Supply Voltage: 115 VAC
• Number of Input Points: 16 points (16P)
• Rated Input Current: Approx. 6 mA (typical)
• Form Factor: Occupies one slot in an 800-series rack
• Compatible Platforms: Modicon AEG, Modicon Quantum, Modicon TSX (including Premium / Compact series)

2. Key Performance Parameters

• Response Time:
  • OFF to ON: 6 ms
  • ON to OFF: 18 ms
• Operating Frequency Range: 47 Hz – 63 Hz (standard AC supply range)
• Operating Temperature Range: –5 °C to +55 °C (industrial grade)

3. Operating Principle and Applications

• Signal Acquisition:
  The module converts field voltage signals into PLC-readable digital signals (0/1) using internal resistor dividers or opto-isolation technology.
• Typical Applications:
  Widely used in packaging machinery, textile equipment, material handling systems, and automated assembly lines for monitoring motor status, detecting limit switches, and reading sensor signals.

4. Compatibility and Conversion

• Cross-Platform Compatibility:
  This module is primarily designed for the Modicon B-series (such as B805, B853, etc.). When used in Modicon TSX systems, a field wiring adapter module (e.g., AS-B210) is typically required to convert the physical rack interface.
• Wiring Method:
  Commonly connected to the system I/O area via a 20-pin flat connector.

Summary

If you are looking for a stable and well-proven discrete input module for receiving 115 VAC switching signals, the AS-B805-016 is a classic and widely adopted solution.