ABB 81EU01E-E Analog Input Module

• Humidity Resistance: 5%–95% relative humidity (non-condensing, IEC 60068-2-3)
• Vibration Resistance: 10–500Hz, 0.5g acceleration (IEC 60068-2-6)
• Shock Resistance: 15g acceleration, 11ms duration (half-sine wave, IEC 60068-2-27)
• Dimensions (W×H×D): 25mm × 100mm × 120mm (fits AC500 PLC rack)
• Weight: Approximately 0.15kg
• Mounting Method: Installed in AC500 PLC standard rack (compatible with AC500-eCO, AC500-S, and AC500-X series racks)
• Certifications: IEC 61131-2 (industrial control equipment), IEC 61000-6-2/6-4 (EMC), UL 508, CSA C22.2 No. 14
• Compatibility: AC500-eCO (CPU PM554, PM564), AC500-S (CPU PM581, PM582), AC500-X (CPU PM591, PM592) PLCs

Functional Features

• Flexible Signal Configuration: Supports multiple voltage and current signal ranges, allowing direct connection to common industrial sensors (e.g., pressure transmitters, RTDs via signal converters) without additional signal conditioning.
• High Accuracy and Resolution: 16-bit resolution and ±0.1% FS accuracy ensure precise measurement of process variables, critical for applications requiring tight control (e.g., chemical dosing, temperature regulation).
• Enhanced Isolation: Reinforced insulation between channels and between input and PLC backplane prevents ground loops, voltage spikes, and electromagnetic interference (EMI) from disrupting signal acquisition.
• Seamless PLC Integration: Communicates directly with AC500 PLC CPUs via the backplane bus, eliminating the need for external wiring and simplifying system configuration (setup via ABB Automation Builder software).
• Diagnostic Capabilities: Provides real-time fault feedback (e.g., open-circuit sensors, overrange signals) to the PLC, enabling predictive maintenance and quick troubleshooting.
• Compact Design: 25mm width allows high channel density in control cabinets, reducing space requirements—ideal for applications with limited rack space.
• Wide Environmental Tolerance: Operates reliably in extreme temperatures, high humidity, and industrial vibration/shock, suitable for harsh sites like factories, refineries, and water treatment plants.

Application Scenarios

• Chemical and Petrochemical Industry: Connected to pressure transmitters (4–20mA) and temperature sensors (via signal converters) in reactor systems, enabling the AC500 PLC to monitor and adjust reaction pressure/temperature, ensuring compliance with production standards.
• Water and Wastewater Treatment: Used with flow meters (0–10V) and level sensors (4–20mA) in water distribution networks and sewage treatment tanks, supporting PLC-based control of pump speeds and valve positions to maintain optimal flow rates.
• Food and Beverage Manufacturing: Integrates with temperature probes (converted to 4–20mA) in pasteurization units and pH sensors (0–5V) in mixing tanks, ensuring process parameters stay within safe, regulatory-compliant ranges.
• Automotive Component Production: Connects to force sensors (±10V) in assembly line robotic arms and pressure sensors (4–20mA) in hydraulic systems, providing the PLC with data to adjust clamping force and hydraulic pressure for precise component fitting.
• HVAC and Building Automation: Works with air flow sensors (0–20mA) and temperature sensors (0–10V) in commercial buildings, enabling the AC500 PLC to regulate HVAC systems for energy efficiency and occupant comfort.
• Renewable Energy (Solar/Wind): Used with current sensors (4–20mA) in solar inverter systems and voltage sensors (±10V) in wind turbine converters, monitoring power output to optimize energy conversion and feed-in to the grid.