ABB IRB6600 Series Modules: IRB6600-3HAC17484-7/02 IRB6600-3HAC17484-7/03 IRB6640-3HAC17484-6/03 Rotary AC Motor

Technical Dossier

Product Details And Specifications

ABB IRB6600 Series: Comprehensive Module Range and Technical Overview

The ABB IRB6600 series is a family of heavy-duty industrial robots engineered for high-payload, long-reach applications in global process industries including petrochemical refineries, nuclear facility maintenance, automotive body-in-white assembly, and offshore platform operations. With payload capacities ranging from 175 kg to 500 kg and reach envelopes up to 3.5 m, the IRB6600 platform has accumulated significant installed base across continuous-process manufacturing environments where unplanned downtime carries direct financial and safety consequences. The rotary AC motor assemblies covered on this page — including 3HAC17484-7/02, 3HAC17484-7/03, and 3HAC17484-6/03 — are axis-drive components that directly govern joint torque, positioning repeatability (±0.15 mm), and cycle-time consistency across the robot's six axes.

The Evolution of IRB6600 Architecture

The IRB6600 was introduced by ABB Robotics as a successor to the IRB6400 platform, transitioning from the S4C+ controller generation to the IRC5 controller architecture. This transition brought significant changes to the drive system: the S4C+ era used DSQC-series drive boards with proprietary serial communication, while the IRC5 platform standardized on the RAPID programming environment and modular drive unit (MDU) topology. The rotary AC motor assemblies in the 3HAC17484 family are IRC5-era components, designed for compatibility with the IRC5 single-cabinet and dual-cabinet controller configurations.

Key architectural milestones: the IRB6600 introduced a parallel upper-arm mechanism that reduced moving mass and improved dynamic performance compared to the IRB6400. Subsequent variants — IRB6620, IRB6640, IRB6650S, IRB6660 — share partial mechanical commonality with the IRB6600 but differ in reach, payload rating, and axis-motor specifications. Technicians sourcing replacement motors must verify the exact 3HAC part number and axis designation, as cross-variant substitution without engineering validation can result in torque mismatch and controller fault codes (e.g., 50071, 50072 joint supervision errors).

IRB6600 Full Catalog & Functionalities (SKU List)

Rotary AC Motor Assemblies (Axis Drive Units)

• 3HAC17484-7/02: Axis rotary AC motor assembly, IRB6600 variant, revision 02 — primary joint drive unit
• 3HAC17484-7/03: Axis rotary AC motor assembly, IRB6600 variant, revision 03 — updated encoder interface
• 3HAC17484-6/03: Axis rotary AC motor assembly, IRB6640 variant, revision 03 — higher-torque axis configuration
• 3HAC025338-001: Motor, axis 1, IRB6600/6640 — base rotation drive
• 3HAC025339-001: Motor, axis 2, IRB6600/6640 — lower arm elevation drive
• 3HAC025340-001: Motor, axis 3, IRB6600/6640 — upper arm drive
• 3HAC025341-001: Motor, axis 4, IRB6600/6640 — wrist rotation drive
• 3HAC025342-001: Motor, axis 5, IRB6600/6640 — wrist bend drive
• 3HAC025343-001: Motor, axis 6, IRB6600/6640 — tool flange rotation drive

Gearbox & Mechanical Transmission

• 3HAC028357-001: Gearbox, axis 1, IRB6600 — primary slew ring gearbox assembly
• 3HAC028358-001: Gearbox, axis 2, IRB6600 — lower arm gearbox
• 3HAC028359-001: Gearbox, axis 3, IRB6600 — upper arm gearbox
• 3HAC028360-001: Gearbox, axis 4, IRB6600 — wrist gearbox unit

Controller & Drive Electronics (IRC5 Compatible)

• 3HAC026254-001: Drive unit, IRC5, axis 1–3 — main drive module for lower axes
• 3HAC026255-001: Drive unit, IRC5, axis 4–6 — wrist axis drive module
• 3HAC018144-001: Computer unit, IRC5 main computer — robot controller CPU board
• 3HAC020466-001: I/O unit, IRC5 — digital I/O interface module
• 3HAC025917-001: Power supply unit, IRC5 — 24 VDC system power supply

Encoder & Feedback Systems

• 3HAC17484-1: Resolver/encoder assembly — axis position feedback unit
• 3HAC14550-2: Serial measurement board (SMB) — multi-axis encoder signal processor

Sourcing Hard-to-Find & Obsolete IRB6600 Parts

The IRB6600 series entered its mature lifecycle phase following the commercial introduction of the IRB6700 platform. ABB's standard spare parts support window for the IRB6600 has progressively narrowed, and several 3HAC-series motor assemblies — including specific revisions of the 3HAC17484 family — are no longer available through ABB's standard distribution channels. DriveKNMS maintains a dedicated inventory of IRB6600 lifecycle-extension components sourced through authorized secondary-market channels, including tested-used, refurbished, and new-old-stock (NOS) units.

For facilities operating IRB6600 robots beyond the OEM support window, DriveKNMS provides: direct part number cross-referencing across revision levels (e.g., /02 to /03 compatibility assessment), functional equivalence verification for motor assemblies, and documented test reports for each unit shipped. This service is specifically structured for petrochemical and power generation facilities where robot replacement is not operationally feasible within a planned maintenance window.

Quality Control for the IRB6600 Range

IRB6600 rotary AC motor assemblies present specific test challenges due to the integrated resolver feedback system and the high-inertia load profiles of the axes they serve. DriveKNMS applies the following test protocol to all IRB6600 motor units prior to shipment:

• Winding resistance measurement: Three-phase resistance balance check per ABB service manual tolerance (typically ±5% phase-to-phase)
• Insulation resistance test: 500 VDC megohmmeter test, minimum 100 MΩ phase-to-ground
• Resolver signal verification: Sine/cosine output amplitude and phase angle check using dedicated resolver test fixture
• Bearing inspection: Axial and radial play measurement; replacement if outside ABB-specified tolerance
• Brake function test: 24 VDC brake release verification and static holding torque confirmation
• Encoder communication test: SMB signal integrity check for units with digital encoder interface (revision /03 and later)

All units are shipped with a test report referencing the specific 3HAC part number, serial number, and test date.