ABB 3HAC044075-001 Overview

ABB 3HAC044075-001 is a Battery Unit designed for compatible ABB industrial robot systems. The component is associated with the robot’s Serial Measurement Board, commonly referred to as the SMB system, and provides the electrical backup required by the robot measurement system when the primary robot power supply is unavailable.

In ABB robot architecture, measurement information is essential for maintaining accurate knowledge of the position of the robot axes. The battery therefore performs an important supporting function. By maintaining the required backup power for the measurement system, ABB 3HAC044075-001 helps preserve position-related information and revolution counter data during periods when the robot controller or manipulator is powered down.

ABB documentation identifies 3HAC044075-001 as a Battery Unit. In ABB robot spare-parts documentation, the component is also described as a Battery Pack RMU. The part number is therefore an important identification reference when selecting a replacement battery for a compatible ABB robot or measurement-system assembly.

Product Identification

ABB SMB Battery Function

The ABB 3HAC044075-001 Battery Unit is closely associated with the Serial Measurement Board system used in ABB industrial robots. The SMB system is responsible for handling measurement information associated with robot axis position. Maintaining this information is important because the robot controller needs reliable position data to operate the manipulator correctly.

When the robot’s main electrical supply is switched off, the measurement system cannot continue receiving normal operating power from the main system. The backup battery provides the required electrical support for the relevant memory and measurement functions. This allows important position-related information to remain available when the robot is not operating under normal powered conditions.

This function is particularly important for systems that use revolution counters to maintain knowledge of the robot’s mechanical axis positions. If the required backup power is lost completely, the stored revolution counter information may be affected. Depending on the robot configuration and the condition of the measurement system, this can lead to additional calibration or synchronization procedures.

Technical Characteristics of ABB 3HAC044075-001

The 3HAC044075-001 is identified as a Battery Unit with a rated voltage of 7.2 V. Available product documentation also identifies a nominal capacity of approximately 3.3 Ah and a two-cell battery configuration. These characteristics are designed for the specific backup requirements of compatible ABB robot measurement systems rather than for general industrial power supply applications.

• ABB article number: 3HAC044075-001
• Product designation: Battery Unit
• Battery type: Lithium battery unit
• Rated voltage: 7.2 V
• Nominal capacity: approximately 3.3 Ah
• Cell configuration: Two cells
• Application: ABB robot SMB and measurement-system backup
• Related designation: Battery Pack RMU

The exact battery configuration should always be confirmed against the robot model and the corresponding ABB spare-parts documentation. ABB uses different battery assemblies across different robot generations and measurement-system configurations, so a similar voltage alone should not be used as the basis for substitution.

Application in ABB Robotics

ABB 3HAC044075-001 is used in ABB industrial robot systems where a compatible battery is required to maintain the robot measurement system. ABB spare-parts documentation lists this article number in the electrical spare-parts section of different robot families. For example, ABB documentation for the IRB 14000 identifies 3HAC044075-001 as the Battery Pack RMU.

The component is also listed in ABB documentation for other robot platforms as the battery pack associated with the SMB system. The exact application depends on the robot generation, controller configuration, measurement board, and mechanical configuration.

Because the battery supports measurement-system functions rather than driving motors directly, it should not be confused with a conventional industrial UPS battery, control-panel backup battery, or general-purpose 24 V power source. Its purpose is specifically related to the robot’s measurement and position-retention architecture.

Relationship Between the Battery and Robot Calibration

Robot calibration depends on accurate knowledge of the mechanical position of each robot axis. ABB robots use measurement systems and revolution counters to maintain this information. The backup battery helps maintain the associated information when the robot is without its normal operating power.

If the battery becomes depleted or is disconnected while the robot is powered down, the robot may lose relevant revolution counter information. In such circumstances, the robot can require an appropriate update or calibration procedure before normal operation is restored.

For this reason, the condition of the SMB battery is an important consideration during robot maintenance. Battery replacement should be performed according to the applicable ABB service procedure for the specific robot model. The correct replacement part number should also be verified before installation.

Replacement Considerations

When replacing ABB 3HAC044075-001, the first step is to identify the robot model and controller system. The existing battery article number should then be compared with the replacement documentation. ABB uses different battery assemblies and measurement-system components, and visually similar parts should not automatically be considered interchangeable.

Maintenance personnel should also consider the robot’s current calibration status. If the existing battery has reached a low-voltage condition but the measurement information is still retained, following the appropriate ABB battery replacement procedure can help preserve the robot’s existing measurement data. If measurement information has already been lost, additional calibration or revolution-counter updating may be required.

The battery should therefore be treated as an important robot maintenance component rather than as an ordinary standalone battery. Proper identification, installation, and service procedures help maintain the integrity of the robot measurement system.

Identification for Procurement and Maintenance

For procurement purposes, the complete ABB article number should be recorded as 3HAC044075-001. The product designation should be recorded as Battery Unit, while related descriptions such as Battery Pack RMU or SMB Battery can be used as additional identification terms.

Using the complete article number is particularly useful when searching ABB robot spare-parts documentation. It reduces the possibility of confusing the battery with other ABB battery assemblies, serial measurement units, or SMB-related components.

For technical records, a suitable identification format is: ABB 3HAC044075-001 Battery Unit, 7.2 V lithium battery pack for compatible ABB robot measurement systems. The robot model and controller configuration should be added to the maintenance record whenever available.

Technical Summary

Conclusion

ABB 3HAC044075-001 is a dedicated Battery Unit for compatible ABB industrial robot systems. It is associated with the robot SMB and measurement architecture and provides backup power required to maintain important measurement and revolution-counter information when the main robot power is unavailable.

With a rated voltage of 7.2 V and a nominal capacity of approximately 3.3 Ah, the battery is designed around the requirements of ABB robot measurement systems. ABB documentation identifies 3HAC044075-001 as a Battery Unit and lists it as a Battery Pack RMU in relevant robot spare-parts documentation.

When identifying or replacing this component, the complete ABB article number should be used together with the robot model and controller configuration. Correct identification is essential because ABB industrial robots use different measurement systems and battery assemblies across different product generations. For compatible systems, ABB 3HAC044075-001 provides an important backup function that supports reliable retention of robot measurement information and helps maintain accurate axis position data.