ABB AO801 – Analog Output Module for AC800M / 800xA Systems

1. Product Summary

The ABB AO801 is a high-performance analog output module belonging to the S800 I/O series, designed for use with ABB’s AC800M and 800xA distributed control systems. It provides precise and reliable analog signal output to field devices such as control valves, actuators, and instrumentation requiring proportional control. Built for industrial-grade environments, the AO801 ensures stable output, strong EMC protection, and long-term service reliability.

2. Main Features

8 individually isolated output channels

Supports both current and voltage analog outputs

Built-in diagnostics including output loop monitoring and module status

Designed for continuous 24/7 operation in critical industrial systems

Hot-swap capable in redundant architectures (no shutdown required)

CE / UL compliant and EMC-hardened for harsh electrical environments

Seamless configuration through ABB Control Builder software

3. Technical Parameters (Non-table format for this model)

Output Channels: 8 analog channels

Signal Output Range: 0–20 mA, 4–20 mA, 0–10 V, ±10 V (configurable per channel)

Resolution: 12-bit D/A conversion

Output Load Capability: Up to 750 Ω (current mode)

Power: Supplied through system backplane, no external PSU required

Operating Temperature: 0°C to +55°C

Storage Temperature: −40°C to +70°C

Module Type: S800 I/O, pluggable into TU8xx terminal bases

Certifications: CE, UL, IEC 61131-2 & IEC 61010 compliance

4. Hardware Structure

Removable Terminal Block – Field wiring interface, simplifies replacement

Precision D/A Converter Chipset – Converts digital control values to stable analog signals

Channel Isolation Barriers – Protects controller from surges and ground faults

Backplane Connector – Transfers data, power, and diagnostics to CPU module

LED Indicators – Shows module health and communication state

5. Typical Application Fields

Power plant control (turbine valve position, boiler air/fuel modulation)

Petrochemical process flow & pressure control

Water / wastewater dosing pump and actuator control

HVAC, environmental, and building automation loops

Pharmaceutical & food-grade batching systems

Upgrades of older ABB analog output hardware in legacy plants

6. Installation & Maintenance Instructions

Installation

Mount onto an ABB S800 I/O base (e.g., TU810 / TU812).

Connect shielded twisted-pair wiring to the terminal block.

Configure each channel signal type (mA or V) in ABB software.

Verify proper grounding and shielding to minimize noise.

Maintenance

Inspect terminal screws annually for vibration loosening.

Use ABB diagnostics to detect output loop faults or overloads.

Replace only with original ABB AO801 modules to ensure signal accuracy.

Store spare units in anti-static, moisture-controlled packaging.

7. Additional Notes

AO801 is the standard analog output module, while AO810 / AO820 offer extended variations.

Frequently stocked as a spare part for long-life 800xA system maintenance.

Fully compatible with redundant AC800M controller configurations.