Description

Bachmann AIO288 Multi-Channel Analog I/O Expansion Module

The AIO288 is a high-precision industrial interface card providing eight independent analog inputs and outputs designed for comprehensive sensor integration and actuator control.

Technical Operational Overview

The AIO288 serves as a centralized bridge between field instrumentation and the Bachmann M1 automation system. This module delivers superior signal density by integrating eight analog input channels and eight analog output channels within a single, compact footprint. Its versatile input stage supports a broad spectrum of signal types, including voltage and current, while allowing technicians to switch between single-ended and differential wiring configurations to minimize electrical noise interference.

Beyond standard signaling, the AIO288 features specialized support for thermal management and position feedback. It accommodates up to four Pt100 or Pt1000 RTD sensors via 2-wire or 4-wire connections, ensuring highly accurate temperature monitoring. Furthermore, the module provides a regulated power source for up to four potentiometers. To maintain high system availability, Bachmann integrated proactive diagnostic features into the hardware. The unit continuously monitors for wire breaks in voltage and temperature circuits and employs built-in overload protection to safeguard the internal electronics against current surges.

Key Technical Characteristics

• High-Density Signal Processing: Combines 8 inputs and 8 outputs to maximize I/O availability in restricted cabinet spaces.
• Universal Input Versatility: Handles standard voltage and current loops alongside specialized resistance and differential measurements.
• Integrated Temperature Support: Directly interfaces with Pt100/Pt1000 RTDs, eliminating the need for external signal converters.
• Advanced Fault Diagnostics: Features automated wire-break detection and supply voltage monitoring to prevent operational failures.
• Output Short-Circuit Protection: Ensures that analog outputs remain undamaged during field wiring faults or actuator malfunctions.
• Potentiometer Supply: Delivers dedicated power for position sensors with integrated current-limit monitoring.

Product Specifications

Industrial Applications

Engineers specify the AIO288 for precision-heavy environments, including:

• Wind Turbine Control: Monitoring pitch and yaw sensors while adjusting hydraulic valve positions.
• Process Automation: Managing temperature-sensitive chemical reactions through RTD inputs and flow-control outputs.
• Machine Building: Providing synchronized feedback and command signals for high-speed manufacturing lines.