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Product Introduction
The ABB AO920B (3KDE175532L9200) is a high-performance analog output module designed for the ABB AC 800M control system, a central element in ABB’s flagship System 800xA platform. As a crucial link in process control, this module is used to transmit analog control signals from the automation system to field actuators such as control valves, dampers, and other final control elements.
Engineered for flexibility, precision, and long-term operation, the AO920B provides 8 isolated current outputs, making it suitable for a wide range of industrial control applications. Each channel is individually isolated, ensuring system protection, noise reduction, and reliable signal integrity in electrically harsh environments. The module is DIN-rail mountable and uses ABB’s standardized compact form factor for easy integration into distributed control system cabinets.
Built to meet the stringent requirements of industries like energy, chemicals, marine, and manufacturing, the AO920B ensures consistent and accurate analog control, vital for process stability and safety.
Product Specifications
| Parameter | Details |
|---|---|
| Model | AO920B |
| Part Number | 3KDE175532L9200 |
| Product Type | Analog Output Module |
| System Compatibility | ABB AC 800M / System 800xA |
| Number of Channels | 8 channels (individually isolated) |
| Output Signal Type | Current (0…20 mA / 4…20 mA) |
| Load Impedance | Max 750 Ohm |
| Channel Isolation | 500 V (channel-to-channel and channel-to-ground) |
| Update Rate | < 1 ms per channel |
| Output Accuracy | ±0.1% of full scale |
| Calibration | Factory calibrated |
| Protection | Short-circuit and over-voltage protection |
| Status Indicators | Per-channel diagnostic LEDs |
| Power Supply | 24 V DC (via system bus) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95%, non-condensing |
| Mounting | DIN rail, standard AC 800M base |
| Certifications | CE, RoHS, UL, CSA |
| Dimensions (L × W × H) | 20 x 104 x 104 mm |
| Weight | 0.14 kg |
Product Applications
The ABB AO920B module is deployed in a wide range of industrial applications that demand high-resolution, reliable analog signal output:
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Process Automation: Regulates actuators such as valves and dampers in continuous process systems like chemical, oil & gas, or food processing plants.
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Power Generation: Used in turbine governor control systems and auxiliary power subsystems.
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Marine Automation: Controls analog interfaces for HVAC, propulsion, and ballast systems.
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Water & Wastewater Treatment: Controls valves, chemical dosing systems, and pump speeds via analog current signals.
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Metals & Mining: Feeds precise analog signals to control furnace temperatures, crushers, and mixers.
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Manufacturing Automation: Sends control signals to variable speed drives, sensors, or motor controllers.
Product Advantages
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High Output Accuracy: With ±0.1% full-scale accuracy, the AO920B ensures precise analog control, vital for maintaining process quality.
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Channel-to-Channel Isolation: Each output channel is electrically isolated, preventing noise interference and enhancing signal stability.
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Wide Signal Support: Provides standard industry current outputs (0–20 mA, 4–20 mA), compatible with most industrial actuators.
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Quick Response Time: Fast output update rate ensures timely control in critical processes.
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Robust Diagnostics: Channel LEDs and fault detection help with rapid troubleshooting and preventive maintenance.
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Compact & Modular Design: Fits within ABB’s modular AC 800M ecosystem, reducing cabinet space and simplifying integration.
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Global Certifications: Ready for deployment in regulated and safety-critical industries worldwide.
Frequently Asked Questions (FAQ)
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What types of analog signals does the AO920B output?
It provides current outputs of 0–20 mA and 4–20 mA, widely used in industrial control systems. -
Is each output channel isolated on this module?
Yes, each of the 8 output channels is individually isolated from the others and ground. -
Can this module be hot-swapped?
Yes, when used with the appropriate termination units and powered racks, it supports hot-swap functionality. -
What kind of diagnostics are available on this module?
It includes per-channel status LEDs and system-level error reporting via the controller. -
Does the module support HART communication?
No, AO920B does not support HART protocol on its output channels. -
Is this module compatible with non-ABB control systems?
It is designed specifically for ABB’s AC 800M and System 800xA; use outside that platform is not supported. -
What happens in case of short circuit or overload?
The module includes internal protection that prevents damage and alerts the controller. -
Is recalibration required after installation?
No, the module is factory-calibrated and does not require recalibration under standard conditions. -
What is the update rate for each channel?
Less than 1 millisecond per channel, suitable for high-speed control applications. -
Can it operate in extreme environments?
Yes, it is rated for industrial temperature ranges from -20°C to +70°C, with high humidity resistance.
Related Models from the Same Series or Category
| Model | Description | Output Type |
|---|---|---|
| AO920 | Earlier version, 8 channel analog output | 0…20 mA, 4…20 mA |
| AI920 | Analog input module, 8 channels | 0–10 V, 4–20 mA |
| DI920 | Digital input module, 16 channels | 24 V DC |
| DO920 | Digital output module, 16 channels | 24 V DC |
| AI930 | High-resolution analog input module | 16-bit resolution |
| AO930 | High-resolution analog output module | 16-bit resolution |
Popular ABB Models (Same Brand, Other Categories)
| Model | Description | Application |
|---|---|---|
| ACS880-01 | Wall-mounted variable speed drive | Motor control |
| PM861AK01 | AC 800M CPU module for System 800xA | Process automation |
| CP600-Pro | Industrial HMI panel with web access | Operator interface |
| REF615 | Protection relay for feeders | Power distribution |
| DCS800-S02 | Digital DC drive for high-performance applications | Motors and generators |
| UMC100.3 | Universal motor controller | Pump, compressor, fans |
