



The ABB AO845 is an advanced, high-precision analog output module designed for industrial automation and process control systems. As part of ABB’s 800xA and Freelance control systems, the AO845 module provides highly accurate and reliable analog output signals, essential for controlling devices such as actuators, motors, and valves. With its 16-bit resolution, ±0.05% full-scale accuracy, and flexible output ranges, the AO845 ensures optimal performance and precision for applications in energy management, chemical processing, manufacturing, and beyond. The module’s seamless integration with industrial communication protocols, combined with its robust and compact design, makes it an ideal choice for industries that require high-quality analog control in demanding environments.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | ABB AO845 |
| Module Type | Analog Output Module |
| Number of Channels | 8 (Single-ended Outputs) |
| Output Range | 0-10V, 4-20mA, ±10V |
| Resolution | 16-bit |
| Accuracy | ±0.05% of full scale |
| Output Impedance | < 1 Ω |
| Operating Temperature | -20°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions | 144mm x 130mm x 30mm |
| Weight | 0.3 kg |
| Mounting Type | DIN Rail Mountable |
| Power Consumption | 4W |
| Communication Protocol | Modbus RTU, Profibus DP, Ethernet/IP |
Recommended Related Models
For applications requiring additional channels or more advanced capabilities, consider the following related ABB models:
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ABB AO832 – A higher-capacity module with more output channels, perfect for larger systems or complex setups requiring enhanced analog output control.
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ABB AO830A – Provides more output channels and higher output flexibility, suitable for industrial applications with higher demands for output control.
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ABB AO530 – A more compact and economical version, designed for applications with simpler output requirements but still providing high accuracy.
Popular Allen Bradley Models
For comparison, here are some Allen Bradley models that may suit similar applications:
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Allen Bradley 1756-OA8 – An 8-channel analog output module offering flexible output ranges and precise control.
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Allen Bradley 1734-OA8 – A compact 8-channel model, ideal for space-constrained environments where reliability and precision are required.