AO845A-eA

Description

ABB AO845A-eA Product Overview

Basic Information

Key Features

1. Analog Output Capability
   • Channels: 8 channels (isolated analog outputs).
   • Output Range:
     • 0–20 mA, 4–20 mA (current output).
     • 0–10 V, 1–5 V (voltage output)
   • Resolution: 12-bit or 16-bit (depending on configuration).
   • Accuracy: ±0.1% of full scale (typical for industrial applications).
2. Isolation and Safety
   • Electrical Isolation: Channel-to-channel and channel-to-system isolation (≥500 V AC/DC).
   • Overload Protection: Short-circuit and overload protection for each channel.
   • EMC Compliance: Meets IEC 61000-6-2 (industrial environment immunity) and IEC 61000-6-4 (emission standards).
3. Communication and Integration
   • Compatibility: Designed for ABB’s PLC/DCS systems (e.g., AC500, AC800M, Industrial IT).
   • Protocol: Integrates via ABB’s proprietary communication buses (e.g., CANopen, Ethernet Powerlink) or third-party systems through gateway modules.
4. Mechanical and Environmental
   • Form Factor: Compact DIN-rail mount design (width typically 25–35 mm).
   • Operating Temperature: -25°C to +60°C (extended temperature versions available).
   • Humidity: 5–95% RH (non-condensing).
   • Vibration/Shock Resistance: Complies with IEC 60068-2-6 (vibration) and IEC 60068-2-27 (shock).
5. Diagnostics and Maintenance
   • LED Indicators: Channel status, power, and fault diagnostics.
   • Self-Diagnosis: Built-in diagnostics for open circuits, short circuits, and calibration errors.
   • Hot-Swap Capability: Supports module replacement without powering down the system.

Typical Applications

• Process Control:
  • Controlling valves, actuators, or variable frequency drives (VFDs) in chemical plants, water treatment facilities, or oil refineries.
  • Example: In a wastewater treatment plant, the AO845A-eA regulates pump speeds based on real-time flow data from sensors.
• Machine Automation:
  • Precise analog control for robotics, CNC machines, or packaging equipment.
  • Example: In a food processing line, the module adjusts motor torque for conveyor belts to handle delicate products.
• Building Automation:
  • Controlling HVAC systems (e.g., modulating dampers or chillers) in smart buildings.
  • Example: In a commercial office tower, the module manages air flow rates based on occupancy sensors.
• Renewable Energy:
  • Regulating inverters or energy storage systems in solar/wind farms.
  • Example: In a solar plant, the module adjusts inverter output to match grid requirements.

Technical Specifications (Detailed)

Compatibility and Accessories

• Compatible PLCs:
  • ABB AC500 Series (e.g., PM590, PM581).
  • ABB AC800M (Industrial IT Platform).
• Accessories:
  • Terminal blocks (e.g., TB521 for secure wiring).
  • Communication cables (e.g., CANopen or Ethernet cables).
  • Protective covers for harsh environments.

Ordering Information

• Full Model Example: AO845A-eA-001 (8-channel, 4–20 mA output, standard temperature).
• Variants:
  • -eA: Standard industrial version.
  • -eH: High-temperature version (-40°C to +70°C).
  • -eS: Stainless steel enclosure for corrosive environments.

Summary