Overview
The Modicon AS-B805-016 is a 16-point, 115VAC input module engineered for industrial automation systems. As part of the Modicon 800 Series I/O architecture, this module efficiently converts switched input signals into logic voltage levels, enabling direct communication with programmable logic controllers (PLCs). Each input point is electrically isolated from logic circuitry, ensuring system safety and reliability.
Key Features
- 16-point input capacity organized in two groups of eight for structured signal management
- Accepts 115VAC inputs from pushbuttons, limit switches, proximity sensors, and other AC sources
- Operates across 80–130VAC range at 47–63 Hz, compatible with standard industrial power supplies
- Electrical isolation between input points and logic circuitry enhances system safety
- Standard screw terminal strip for straightforward wiring and quick connections
- Single-slot I/O rack mounting; minimal footprint design
Technical Specifications
- Input Voltage: 115VAC nominal (80–130VAC operating range)
- Frequency: 47–63 Hz
- Input Points: 16 total (2 groups of 8)
- Maximum Voltage (Continuous): 130VAC
- Surge Voltage (One Cycle): 220VAC
- Off Condition (Input Range): 0–35VAC
- Wetting Current: 6 mA minimum
- Mounting: Single-slot I/O rack format
- Weight: 2.2 lbs (1.01 kg)
- Connection Type: Screw terminal strip
Typical Applications
- Legacy Modicon PLC I/O expansion and replacement
- Discrete input signal conditioning from industrial sensors
- Integration with pushbutton panels and limit switch arrays
- Proximity and photoelectric sensor interfacing
- Industrial process control and machine automation systems
Compatibility & Replacements
Compatible With
- Modicon 800 Series PLC controllers
- Modicon compact and mid-range PLC systems
- Standard I/O rack architectures supporting 115VAC input modules
- Systems using discrete AC input signal conversion
Replaces / Drop-In Replacement For
- Verify specific model compatibility with your Modicon system documentation or system integrator before ordering
Works With
- Modicon Concept, M241, M251 and legacy PLC programming platforms
- I/O rack backplane systems supporting 800 Series modules
- Standard screw-terminal wiring and field device integration
- AC signal conditioning applications in industrial automation







