ABB 3HAC Series Modules: ABB 3HAC025338-003/06C Main Servo Drive Unit

Technical Dossier

Product Details And Specifications

ABB 3HAC Series Technical Notes

The ABB 3HAC series constitutes the core drive and control hardware platform for ABB's IRC5 robot controller family, deployed globally across heavy industrial sectors including petrochemical refineries, nuclear power plant material handling systems, automotive body-in-white welding lines, and continuous-process chemical plants. The IRC5 controller — and by extension the 3HAC module ecosystem — represents ABB's dominant installed base in 6-axis articulated robot automation, with millions of units in service across more than 53 countries. The 3HAC025338-003/06C is the main servo drive unit within this architecture, responsible for multi-axis power conversion and motor current regulation in IRC5 M2004 and M2006 generation controllers.

The Evolution of 3HAC Architecture

The 3HAC designation (Hardware ABB Controller) was introduced with the S4C+ controller generation in the late 1990s and carried forward through the IRC5 platform launched in 2004. The architecture evolved through three distinct generations:

Generation 1 (S4C+, 1998–2004): Modular drive units with discrete axis boards, limited fieldbus integration, and proprietary ABB backplane communication. Key modules from this era (e.g., 3HAC3180-1, 3HAC4038-1) are now fully obsolete with no OEM support.

Generation 2 (IRC5 M2004/M2006, 2004–2016): Consolidated servo drive architecture with integrated DSQC boards, EtherNet/IP and DeviceNet support, and the Drive Module / Controller Module split. The 3HAC025338-003/06C belongs to this generation. Compatibility is maintained across M2004 and M2006 variants but is not forward-compatible with IRC5 Compact or IRC5 Panel Mounted Controller without hardware adaptation.

Generation 3 (IRC5 with OmniCore migration, 2019–present): ABB's OmniCore C30/C90 platform introduces a fully software-defined motion control stack. Legacy 3HAC IRC5 modules are not compatible with OmniCore hardware. Sites running IRC5 M2004/M2006 must maintain 3HAC spare parts inventories independently, as OEM production of many 3HAC lines has ceased.

3HAC Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced components within the ABB 3HAC IRC5 ecosystem, classified by functional category:

Main Servo Drive Units

3HAC025338-003/06C: IRC5 main servo drive unit, M2004/M2006, multi-axis power stage
3HAC025338-001: IRC5 main servo drive unit, standard variant, single-cabinet configuration
3HAC025338-004: IRC5 main servo drive unit, high-current variant for large-payload robots

Drive System & Axis Computer Boards

3HAC026254-001: Drive unit, IRC5, axis 1–3 power module
3HAC026255-001: Drive unit, IRC5, axis 4–6 power module
3HAC017484-1: Axis computer board (DSQC 668), IRC5 motion control processor
3HAC031670-001: Rectifier unit, IRC5 drive module, AC/DC conversion stage

Main Computer & Controller Boards

3HAC036997-001: Main computer unit (DSQC 1000), IRC5 M2006 generation
3HAC018144-1: Main computer unit (DSQC 639), IRC5 M2004 generation
3HAC026254-001: I/O computer board, IRC5 system bus interface

I/O Modules

3HAC025917-001: Digital I/O module, 16DI/16DO, IRC5 system
3HAC025917-002: Digital I/O module, 32DI/32DO, extended configuration
3HAC026254-002: Analog I/O module, IRC5, 4AI/4AO channels

Power Supply & Distribution

3HAC024488-001: Power supply unit, IRC5 controller module, 24VDC regulated
3HAC031670-002: Capacitor bank unit, IRC5 drive module, energy buffer
3HAC025917-003: Panel power distribution board, IRC5 multi-cabinet

Communication & Fieldbus Adapters

3HAC026254-003: DeviceNet adapter board, IRC5 fieldbus interface
3HAC031670-003: PROFIBUS-DP adapter, IRC5 master/slave configuration
3HAC036997-002: EtherNet/IP scanner module, IRC5 M2006

Sourcing Hard-to-Find & Obsolete 3HAC Parts

ABB has progressively discontinued OEM production of IRC5 M2004-generation 3HAC modules. As of 2024, components including the 3HAC025338-003/06C, DSQC 639 main computer, and first-generation axis boards are classified as End-of-Life (EOL) by ABB Robotics, with no direct OEM replacement pathway that maintains backward compatibility.

Quality Control for the 3HAC Range

The 3HAC servo drive and controller modules present specific test challenges due to their integrated backplane communication architecture and multi-axis power stage design. DriveKNMS applies the following verification protocol to all 3HAC units prior to dispatch:

Visual & Physical Inspection: Capacitor condition assessment, connector pin integrity check, PCB trace inspection under magnification, and thermal compound condition evaluation on IGBT modules.

Functional Power-On Test: Each drive unit is energized on a dedicated IRC5 test bench. Axis enable signals, DC bus voltage regulation, and brake control outputs are verified against ABB service manual specifications.

Communication Bus Verification: DSQC board serial communication (RS-485 backplane) and fieldbus adapter handshake sequences are validated using ABB RobotStudio diagnostic tools.

Load Simulation: Servo drive units undergo simulated motor load testing at rated current to verify IGBT switching performance and thermal management.