Description

1. Core Product Description: The AMA Unit
AMA stands for the core unit of the Adaptive Motion Control or Absolute Accuracy system. It is commonly known as the AMA Option Board or AMA Control Unit.
Primary Function:
The AMA system is an advanced ABB robot feature designed to significantly improve the robot’s absolute positioning accuracy.
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Problem it Solves: In theory, a robot moves to a commanded position based on a mathematical model. In reality, factors like gear backlash, link weight, mechanical tolerances, and thermal expansion cause slight deviations between the robot’s actual position and its theoretical position (absolute accuracy error). This is unacceptable for high-precision applications.
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How it Works: The AMA system compensates for these errors through sophisticated software algorithms and a calibration process. During factory acceptance or field installation, the robot undergoes precise measurement to generate a unique set of error compensation parameters. This parameter set is stored in the AMA Option Board (the 3HNE 04687-103).
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Simple Analogy: The AMA is like a “personalized calibration profile” for the robot. This board holds the unique “recipe” that allows this specific robot to move with greater accuracy.
2. Physical Form and Installation
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It is typically a Printed Circuit Board (PCB) or an electronic module.
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It is installed inside the robot controller, specifically on the baseboard or a dedicated slot of the Computer Main Unit (DSQC).
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It is not a peripheral device that users operate directly, but rather a core component integrated within the control system.
3. Application Scenarios
Robots equipped with the AMA system are primarily used in applications demanding extremely high absolute path accuracy, such as:
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Aerospace Manufacturing: Aircraft drilling and riveting.
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Automotive Industry: Precision welding, laser cutting.
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Precision Machining: Deburring, grinding.
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Measurement and Inspection.
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Any application requiring the robot’s end-effector to reach pre-defined points in 3D space with extreme precision.
4. Related Robot Models
The AMA option was commonly used for ABB’s high-precision robot series, such as:
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IRB 6600
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IRB 7600
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IRB 6640
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And other large robots requiring high-precision options.
Important Note:
This board does not operate alone. It must be used in conjunction with the corresponding robot software option (enabling the AMA function) and the already completed robot calibration data.
Summary
| Item | Description |
|---|---|
| Full Model Number | ABB 3HNE 04687-103 AMA |
| Brand | ABB |
| Product Category | Robot Spare Part / Option Module |
| Core Function | Absolute Accuracy System (AMA) Option Board |
| Primary Role | Stores the robot’s calibration parameters to compensate for mechanical errors and greatly enhance the robot’s absolute positioning accuracy. |
| Physical Form | Electronic circuit board installed inside the robot controller. |
| Application Scenarios | High-precision applications like drilling, riveting, precision assembly, laser processing, etc. |









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