ABB MU200 3HAC040656-001 / MU400 3HAC040658-002 / MU400 3HAC040658-001 Motor Units

Technical Dossier

Product Details And Specifications

ABB MU200 / MU400 Series: Comprehensive Motor Unit Range and Technical Overview

The Evolution of MU200 / MU400 Architecture

ABB's motor unit architecture for industrial robots has progressed through three distinct generations. The first generation, introduced with the S4 controller platform in the mid-1990s, used resolver-based feedback and separate brake modules. The second generation, aligned with the S4C+ platform, consolidated brake circuits into the motor unit housing and standardized the M12 connector interface, reducing field wiring complexity. The MU200 and MU400 series represent the third-generation architecture, introduced alongside the IRC5 controller (launched 2004), featuring integrated absolute multi-turn encoders, IP67-rated housings, and a unified mechanical interface compatible with IRB 1600, IRB 2400, IRB 4400, IRB 4600, IRB 6640, and IRB 6700 manipulator families.

Compatibility note: MU200-series units (lower torque envelope, ~200 Nm peak) are designated for axes 4-6 (wrist axes) on mid-to-large payload robots. MU400-series units (higher torque envelope, ~400 Nm peak) serve axes 1-3 (base, lower arm, upper arm) on the same robot families. Cross-series substitution is not supported without mechanical and firmware reconfiguration.

MU200 / MU400 Full Catalog & Functionalities (SKU List)

MU200 — Wrist Axis Motor Units (Axes 4-6, ~200 Nm)

• 3HAC040656-001: MU200 standard motor unit, axis 4/5/6, IRB 4600 / IRB 6640 — primary wrist drive, integrated encoder, IP67
• 3HAC040656-002: MU200 variant with extended cable harness for extended-reach (XT) robot configurations
• 3HAC040656-003: MU200 cleanroom variant, ISO Class 5 rated, for semiconductor and pharmaceutical applications
• 3HAC040656-004: MU200 foundry variant, reinforced sealing for high-particulate environments
• 3HAC17484-1: Motor unit axis 4, IRB 2400 / IRB 4400 legacy compatible, resolver feedback
• 3HAC17484-2: Motor unit axis 5, IRB 2400 / IRB 4400, resolver feedback, brake integrated
• 3HAC17484-3: Motor unit axis 6, IRB 2400 / IRB 4400, resolver feedback, reduced inertia
• 3HAC025338-001: Motor unit axis 4, IRB 6640 / IRB 6650S, encoder-based, high-cycle rated
• 3HAC025338-002: Motor unit axis 5, IRB 6640 / IRB 6650S, encoder-based

MU400 — Base & Arm Axis Motor Units (Axes 1-3, ~400 Nm)

• 3HAC040658-001: MU400 standard motor unit, axis 1/2/3, IRB 4600 / IRB 6640 — primary structural axis drive, integrated multi-turn encoder
• 3HAC040658-002: MU400 variant, axis 2 specific, modified gear ratio for IRB 6700 upper arm kinematics
• 3HAC040658-003: MU400 high-ambient-temperature variant, rated to +52 degrees C continuous, for foundry/press shop use
• 3HAC040658-004: MU400 with stainless steel housing, food & beverage / washdown environments
• 3HAC026253-001: Motor unit axis 1, IRB 6640 / IRB 6650S, high-torque base rotation
• 3HAC026253-002: Motor unit axis 2, IRB 6640 / IRB 6650S, lower arm elevation drive
• 3HAC026253-003: Motor unit axis 3, IRB 6640 / IRB 6650S, upper arm extension drive
• 3HAC14178-1: Motor unit axis 1, IRB 4400 legacy, resolver-based, high-inertia load rated
• 3HAC14178-2: Motor unit axis 2, IRB 4400 legacy, resolver-based
• 3HAC14178-3: Motor unit axis 3, IRB 4400 legacy, resolver-based, brake module integrated

Sourcing Hard-to-Find & Obsolete MU200 / MU400 Parts

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Quality Control for the MU200 / MU400 Range

ABB motor units contain integrated gearboxes, servo motors, encoder assemblies, and brake circuits within a single sealed housing. Standard visual inspection is insufficient to validate functional integrity. DriveKNMS applies a structured test protocol to all MU200 and MU400 units prior to dispatch:

Q: How is condition confirmed before quotation?
A: Available condition, photos, test records and documentation are checked according to the requested model and sourcing channel before a formal RFQ response.