Overview
The Modicon AS-B803-008 is a proven 800 Series discrete AC input module engineered for use with Gould Modicon PLC controllers. This module accepts 115VAC input signals and provides 8 isolated input points, making it suitable for integrating external AC-powered sensors, switches, and control signals into your PLC system. Built for industrial durability and long service life, this I/O card remains a popular retrofit option for legacy and ongoing automation projects.
Key Features
- 115VAC Input: Accepts standard industrial AC mains voltage signals
- 8 Isolated Input Points: Each input point is isolated for enhanced noise immunity and signal integrity
- Plug-In Connector: Rigid wiring system allows quick module insertion and removal
- Screw Terminal Connections: Standard terminal strip wiring for field installation
- Compact Form Factor: Fits within standard Modicon 800 Series rack and backplane designs
Technical Specifications
- Input Voltage Range: 115VAC ±10% continuous
- Operating Frequency: 47–63 Hz
- Number of Input Points: 8 (2 input groups)
- Input Type: Isolated 115VAC AC
- Response Time: Approx. 8.3 ms (at 60 Hz)
- Power Consumption: +5V 76 mA, +4.3V 240 mA
- Connection Type: Screw terminal strip
- Mounting: Modicon 800 Series backplane slot
- Country of Origin: United States
Typical Applications
The AS-B803-008 is well-suited for:
- Industrial machinery control and monitoring
- Building automation and HVAC systems
- Motor starter and pump control circuits
- Process monitoring and discrete event logging
- Legacy PLC system upgrades and expansion
- OEM equipment retrofitting and maintenance
Compatibility & Replacements
Compatible With
- Gould Modicon 800 Series PLC Controllers
- Modicon M340 systems with appropriate backplane adapters
- Industrial AC sources and sensor networks (push buttons, limit switches, proximity switches)
- Standard Modicon 800 Series I/O racks and enclosures
Replaces / Drop-In Replacement For
- Original equipment or OEM-equivalent Modicon AS-B803-008 modules
- Legacy Gould input cards requiring 115VAC, 8-point isolated configuration
Works With
- Modicon M340 IDE or Concept software (legacy platforms)
- Allied Telesyn MRO software environments
- Standard industrial electrical control networks operating at 115VAC, 50–60 Hz
- Verify compatibility with your system integrator before ordering.
