Unitronics IO-A18 Analog Input Expansion Module 8 Single-Ended Channels

Description:

The Unitronics IO-AI8 Analog Input Expansion Module is an 8-channel analog input module used with compatible Unitronics PLC systems to acquire voltage and current signals for industrial automation and process control applications. Commonly installed in manufacturing equipment, process control panels, water treatment systems, and OEM machinery requiring multiple analog sensor inputs. Maintenance technicians, OEMs, and system integrators use this module for replacement, retrofit, system expansion, and PLC I/O upgrades.

Applications:

The Unitronics IO-AI8 is designed for industrial automation systems that monitor transmitters, pressure sensors, flow meters, level sensors, temperature transmitters, and other analog field devices. It is widely used in packaging machinery, process manufacturing, HVAC systems, water and wastewater facilities, and factory automation where reliable analog data acquisition is required.

Technical Specifications:

• Brand: Unitronics
• Part Number: IO-AI8
• Product Type: Analog Input Expansion Module
• Number of Analog Inputs: 8 single-ended channels
• Input Signal Types: 0–10 V, 0–20 mA, 4–20 mA
• Resolution: Up to 14-bit (Normal Mode)
• Fast Mode Resolution: 12-bit
• Conversion Method: Voltage-to-frequency
• Communication: Expansion interface for compatible Unitronics OPLC controllers
• Mounting: 35 mm DIN rail or panel mount
• Power Consumption: Approximately 0.2 W at 5 VDC supplied by the adapter
• Status Indicator: Green RUN LED for communication status
• Designed for industrial analog signal acquisition and monitoring
• Suitable for OEM equipment, retrofit, and maintenance installations
• Engineered for continuous-duty industrial automation applications

Common Replacements:

• Unitronics IO-ATC8
• Unitronics IO-AI4-AO2
• Unitronics EX-D16A3-AI8