ABB 3HAB8798-1/2B DSQ266C Expansion Module

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1. Product Overview

The ABB 3HAB8798-1/2B, also known as DSQC 266C, is an expansion module used in ABB industrial robot control systems. It functions as an axis drive interface module, providing signal routing, motion control communication, and expansion capability for additional robot axes. It is widely used in ABB servo drive cabinets and robot controllers as a key internal module.

2. Technical Specifications

• Model: 3HAB8798-1/2B

• Designation: DSQC 266C Expansion / Axis Drive Module

• Type: Servo drive interface and axis expansion unit

• Function: Axis extension, motion control signal processing, drive communication

• Compatible Systems: ABB robot controllers (specific models vary depending on version)

• Weight: Approx. 1.4 – 1.5 kg

• Dimensions: Approx. 130 × 190 × 20 mm

• Structure: Plug-in module installed in drive cabinet

• Power Supply: Supplied internally by the robot controller

• Communication: Internal ABB drive bus interface

• Operating Temperature: 0°C to +45°C

• Protection Level: Installed inside protected control cabinet

• Compatibility Notes: Must match controller and servo amplifier version

3. Advantages & Features

1. High Compatibility

• Fully integrated with ABB servo drive and robot control systems

• Ideal for replacement or system expansion

2. Modular Design

• Plug-in structure enables fast installation and removal

• Supports system scalability without major redesign

3. High Reliability

• Industrial-grade durability, stable long-term operation

• Internal protection reduces errors caused by noise or interference

4. Cost Efficiency

• Suitable for maintenance, greatly reducing downtime

• Expansion modules eliminate the need to replace entire drive units

5. Proven and Mature Technology

• Part of ABB’s classic DSQC module family, widely proven in the field

4. Application Areas

• Industrial Robots: Axis drive expansion and motion control for ABB robotic systems

• Automation Lines: Used in welding, cutting, handling, palletizing, assembly lines

• Maintenance & Replacement: Serves as a reliable spare part to replace faulty modules

• System Upgrades: Used when adding axes or upgrading robot drive capability

5. Precautions & Recommendations

1. Verify Compatibility

• Ensure your robot controller and servo drive support DSQC 266C

• Version differences may affect functionality

2. Environment Requirements

• Must be installed inside a control cabinet

• Avoid moisture, dust, vibration, and corrosive gases

3. Electrostatic Protection

• Always use an anti-static wrist strap when handling the module

• Avoid touching the PCB components directly

4. Power-On Testing

• Check that all connectors are properly seated

• After power-up, observe for errors or axis drive alarms

• Disconnect immediately if abnormal behavior occurs

5. Maintenance

• Periodically check connector tightness and module mounting

• Avoid excessive insertion/removal to protect the connector

• Replace or repair the module immediately if communication or drive errors appear

The structure and details of the product：

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