ABB 3HAC049856-003 TMA 2B Servo Motor IRB 6640 Replacement

Product Overview

ABB 3HAC049856-003 TMA 2B Servo Motor IRB 6640 Replacement: Seamless Transition & Legacy System Compatibility

The ABB 3HAC049856-003 is a TMA 2B series AC servo motor with pinion, purpose-engineered for the ABB IRB 6640 industrial robot platform. As ABB progressively phases out legacy drive and motion components across its robotics lineup, many facilities running IRB 6640 cells face the challenge of sourcing a verified, drop-in replacement that preserves existing wiring harnesses, axis calibration data, and robot controller compatibility without triggering a full system overhaul.

TOPNLMS supplies the 3HAC049856-003 as a direct replacement unit, fully tested prior to shipment, with a 12-month warranty and rapid dispatch from our Xiamen warehouse. Whether your facility is executing a planned preventive maintenance swap, responding to an unplanned axis failure, or building a strategic spare-parts buffer for your IRB 6640 fleet, this unit is ready to ship.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful IRB 6640 servo motor replacement rarely involves a single component in isolation. During the migration process, engineers typically audit the entire axis drive chain and surrounding control architecture. When replacing the 3HAC049856-003, the following components are commonly evaluated or replaced in parallel to ensure system integrity:

The ABB DSQC663 and DSQC668 drive modules, housed within the IRC5 controller cabinet, supply the regulated AC power to the TMA 2B motor. If the drive module shows signs of thermal stress or capacitor aging — common in systems that have been running continuously for 8–12 years — replacing it alongside the servo motor eliminates the risk of a secondary failure shortly after the motor swap. Similarly, the ABB 3HAC025338-001 motor cable assembly connects the IRC5 drive output to the axis motor; inspecting and replacing this harness during the motor change prevents intermittent encoder feedback faults that can be misdiagnosed as motor defects.

For facilities upgrading multiple axes simultaneously, the ABB 3HAC026268-001 (the predecessor motor for adjacent axes on the IRB 6640 platform) is frequently ordered alongside the 3HAC049856-003 to standardize the spare-parts inventory across the robot cell. The ABB SMB (Serial Measurement Board) 3HAC14550-2 is another component worth inspecting during this migration — it handles resolver signal processing and axis position memory, and a degraded SMB can cause calibration drift even after a new motor is installed.

On the programming and commissioning side, the ABB DSQC679 FlexPendant or a compatible teach pendant is required to execute the axis calibration routine (fine calibration) after motor replacement. If your facility’s FlexPendant is running an older firmware version, this is an appropriate time to update it to ensure compatibility with the latest IRC5 system software. The ABB RobotStudio offline programming environment can be used to pre-validate the axis configuration and simulate the post-replacement calibration sequence before the technician enters the cell, reducing live commissioning time significantly.

For facilities that also operate ABB IRB 6700 or IRB 7600 platforms in the same production environment, this migration project is a natural opportunity to audit the TMA 2B motor inventory across all robot models, as several axis positions share compatible motor families. Coordinating a consolidated procurement order through TOPNLMS allows for volume pricing and synchronized delivery scheduling to minimize production disruption.

Retrofit Guidance FAQ

Q: Does replacing the 3HAC049856-003 require rewiring the motor cable harness?
A: No. The TMA 2B series uses the same ABB M23 motor connector standard as its predecessor. The existing cable harness can be reused directly, provided it passes a continuity and insulation resistance check prior to reconnection.

Q: Will the IRC5 controller recognize the new motor without parameter changes?
A: Yes. The 3HAC049856-003 is a verified replacement for the IRB 6640 axis position it serves. The IRC5 drive parameters (motor type, resolver gain, current limits) remain unchanged. Only the fine calibration routine needs to be re-executed after physical installation.

Q: How long does the axis calibration take after motor replacement?
A: Typically 30–90 minutes per axis, depending on the technician’s familiarity with the ABB calibration procedure and whether a calibration pin set (3HAC15716-1 or equivalent) is available on-site. TOPNLMS recommends having the calibration tooling ready before the motor arrives to minimize downtime.

Q: Is there a risk of communication protocol incompatibility between the new motor and the existing SMB board?
A: The TMA 2B resolver interface is fully compatible with the ABB SMB (Serial Measurement Board) used in IRC5 systems. No protocol conversion or additional hardware is required. If the SMB itself is aging, it should be replaced independently — it does not affect motor compatibility.

Q: Does the 3HAC049856-003 fit in the same physical installation space as the outgoing motor?
A: Yes. The TMA 2B series maintains the same mechanical envelope and mounting bolt pattern as the predecessor TMA 2 units used in the IRB 6640 axis housing. No machining, bracket modification, or housing adaptation is required.

Q: Can this motor be used as a long-term spare without installation?
A: Yes. TOPNLMS ships the 3HAC049856-003 in protective packaging suitable for shelf storage. For long-term storage (beyond 12 months), we recommend periodic manual shaft rotation to prevent bearing brinelling and grease migration.

Warranty Assurance

Every ABB 3HAC049856-003 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each unit undergoes a pre-shipment functional inspection covering insulation resistance, resolver signal integrity, mechanical rotation smoothness, and connector pin condition. Units that do not meet our outgoing quality standard are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund, depending on the customer’s preference and the nature of the defect. Our after-sales response target is within 24 hours of a claim submission. Customers are not required to return the defective unit before a replacement is dispatched for verified warranty cases, reducing the time your production line is affected.

For procurement teams requiring documentation, TOPNLMS can provide a test report, packing list, and commercial invoice with HS code declaration for customs clearance. We ship via DHL Express, FedEx International Priority, and sea freight (for bulk orders), with tracking provided at the time of dispatch.

To place an order or request a quotation, contact our technical sales team directly:

📧 [email protected]
📞 +86 18359293191
🌐 https://topnlms.com

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