ABB AO845 3BSE023676R1 Analog Output Module
Product Overview
The ABB AO845 3BSE023676R1 is a high-precision analog output module designed for use within ABB’s Advant Master and AC 800M control systems. It provides 8 analog output channels capable of delivering accurate voltage or current signals to field devices such as actuators, control valves, and signal converters. Engineered for critical process control applications, the AO845 ensures precise signal transmission and reliable operation in a wide range of industrial environments.
This module features galvanic isolation, diagnostics capabilities, and hot-swap support, making it a dependable and flexible solution for demanding automation systems. Its compact size and compatibility with ABB’s S800 I/O series enable easy integration and scalable system configurations.
Key Features
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8 High-Precision Analog Outputs – Provides 8 individually isolated channels for voltage or current signal generation
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Flexible Output Types – Supports 0/4…20 mA and 0…10 V signals for wide field device compatibility
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Galvanic Isolation – Each output channel is electrically isolated, improving system safety and signal integrity
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Hot-Swappable – Enables replacement without system shutdown, reducing downtime during maintenance
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Comprehensive Diagnostics – Includes fault detection and status indicators for enhanced system monitoring
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Compact Design – Fits into standard S800 I/O racks, optimizing panel space usage
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Seamless Integration – Fully compatible with ABB AC 800M and Advant Controller 410/450 series
Technical Specifications
3.1 Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 45 × 102 × 119 mm |
| Weight | 0.21 kg |
3.2 Electrical Characteristics
| Item | Specification |
|---|---|
| Number of Channels | 8 analog output channels |
| Output Signal Range | 0/4…20 mA or 0…10 V |
| Load Resistance | Max 750 Ω (current); Min 2 kΩ (voltage) |
| Accuracy | ±0.1% of full scale |
| Resolution | 12 bits |
| Isolation | Channel-to-bus and channel-to-channel |
3.3 Environmental Characteristics
| Item | Specification |
|---|---|
| Operating Temperature | -20°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
| Vibration Resistance | 10–58 Hz: 0.15 mm; 58–150 Hz: 1.0 g |
| Protection Class | IP20 |
3.4 System Compatibility
| Item | Specification |
|---|---|
| I/O Platform | ABB S800 I/O |
| Control Systems | AC 800M, Advant Controller 410/450 |
| Terminal Unit | TU845, TU844, or other compatible TU units |
Industry Applications
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Power Generation – Delivers precise control signals for turbine regulation, actuator positioning, and system feedback loops
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Oil & Gas – Ensures reliable analog output for valve actuators, pressure control, and flow regulation in refineries and offshore platforms
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Chemical Processing – Supports accurate dosing and process regulation with robust output channels
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Water & Wastewater – Interfaces with actuators and control devices for level and flow control in treatment plants
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Manufacturing – Enables precision control in assembly lines, robotics, and quality control systems
The ABB AO845 3BSE023676R1 Analog Output Module is a robust and precise output device tailored to meet the demands of modern industrial automation systems. With its wide signal range, advanced diagnostics, and flexible integration options, it delivers consistent performance across critical control applications in diverse industries.
