ABB 3HAC17484-8/08 Replacement for IRB 1400 IRB 2400

Product Overview

ABB 3HAC17484-8/08 Replacement for IRB 1400 IRB 2400: Seamless Transition & Compatible Upgrade

When your ABB IRB 1400 or IRB 2400 robotic system faces an unplanned servo motor failure or a planned modernization project, sourcing a verified replacement for the ABB 3HAC17484-8/08 M8 Axis AC Servo Motor is the most critical step in minimizing production downtime. This unit — also cross-referenced as 3HAC055434-001/02 and 3HNP03854-1/01, with OEM equivalent SGMAS-25ARA-AB21 — is the dedicated M8 axis drive motor for ABB’s IRB 1400 and IRB 2400 six-axis industrial robot arms, widely deployed in automotive body welding, arc welding, material handling, and machine tending applications.

TOPNLMS supplies this servo motor as a direct drop-in replacement, fully compatible with the original ABB S4C and S4C+ robot controller platforms. Whether you are executing an emergency swap on a production line or building a retrofit inventory for a multi-robot cell, this unit ships from our Xiamen warehouse with full pre-shipment functional testing and a 12-month replacement warranty.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful M8 axis servo replacement on the IRB 1400 or IRB 2400 rarely involves a single component. In practice, field engineers undertaking this retrofit also evaluate the condition of adjacent drive and control components to prevent repeat failures and ensure the robot cell returns to full rated performance.

During the disassembly of the wrist assembly, it is common to inspect the ABB 3HAC17484-1 M1 Axis Servo Motor and 3HAC17484-3 M3 Axis Servo Motor for bearing wear, as these units share the same S4C drive bus and often accumulate similar operating hours. If the robot has been in service for more than 40,000 hours, a preventive replacement of the full motor set is a cost-effective strategy compared to sequential emergency replacements.

The ABB DSQC 508 and DSQC 532 drive units within the S4C controller cabinet should also be inspected during this migration window. These servo drive boards govern the axis current loops and are a frequent root cause of motor overload faults that accelerate winding degradation. Replacing a faulty DSQC drive board in parallel with the motor ensures the new 3HAC17484-8/08 is not immediately subjected to abnormal current profiles.

For sites upgrading from S4C to the newer ABB IRC5 controller platform as part of a broader modernization initiative, the motor itself remains mechanically compatible, but the encoder interface and drive parameter set will require reconfiguration using RobotStudio and the appropriate IRC5 axis computer module. In this scenario, the ABB DSQC 662 axis computer and the 3HAC026254-001 SMB (Serial Measurement Board) are the key interface components that bridge the legacy motor to the new controller architecture.

Wiring integrity is equally important. The ABB 3HAC025562-001 motor cable harness for the M8 axis should be inspected for insulation cracking at the wrist bend radius — a common failure point on high-cycle robots. Replacing the harness alongside the motor eliminates the risk of intermittent encoder signal faults after reassembly.

Finally, for sites that maintain a spare parts inventory, pairing this 3HAC17484-8/08 unit with a 3HAC17484-7 M7 Axis Motor and a set of ABB IRB 2400 wrist gear unit bearings creates a comprehensive wrist-axis maintenance kit that covers the most statistically likely failure modes in a single procurement event — reducing future emergency sourcing lead times significantly.

Retrofit Guidance FAQ

Q: Does replacing the 3HAC17484-8/08 require any changes to the robot program or RAPID code?
A: No. This is a direct mechanical and electrical replacement. The motor parameters stored in the S4C controller’s axis computer are tied to the motor type designation, not the individual serial number. Provided the replacement unit matches the original specification (which this unit does), no RAPID code modification or axis calibration parameter change is required beyond the standard fine calibration procedure using the calibration pendulum or CalPen tool.

Q: Is the encoder compatible with the existing S4C resolver measurement system?
A: Yes. The 3HAC17484-8/08 uses the same resolver-based feedback system as the original unit. The SMB (Serial Measurement Board) will recognize the replacement motor without firmware changes. After installation, perform a revolution counter update via the FlexPendant to restore axis position memory.

Q: Can this motor be installed without removing the entire wrist assembly?
A: On the IRB 2400, partial disassembly of the wrist housing is required to access the M8 motor mounting bolts. The procedure is documented in ABB Service Manual 3HAC16831-1. Typical field replacement time is 3–5 hours for a trained ABB-certified technician. No special tooling beyond standard metric hex keys and a torque wrench is required.

Q: What communication protocol does the S4C drive system use, and is it affected by this replacement?
A: The ABB S4C uses a proprietary serial drive bus between the axis computers (DSQC boards) and the motor drive stages. This replacement motor is fully transparent to that bus — the drive system communicates with the axis computer, not directly with the motor encoder at the protocol level. No bus reconfiguration is needed.

Q: What if my robot is an IRB 1400 variant with a different payload rating?
A: The M8 axis motor specification is consistent across IRB 1400 payload variants (5 kg and 10 kg). The 3HAC17484-8/08 is applicable to all standard IRB 1400 configurations. For IRB 1400 units with extended reach arms, confirm the axis designation mapping with your ABB service documentation before installation.

Q: How do I verify the replacement motor before installation?
A: TOPNLMS performs a pre-shipment bench test on all servo motors, including winding resistance measurement, insulation resistance (megger) test, and encoder signal verification. A test report is available upon request. On-site, verify winding resistance with a multimeter before installation to confirm the unit was not damaged in transit.

Warranty Assurance

Every ABB 3HAC17484-8/08 unit shipped by TOPNLMS is covered by a 12-month replacement warranty from the date of delivery. Our warranty process is straightforward: if the unit exhibits a verified manufacturing defect or functional failure within the warranty period under normal operating conditions, we will ship a replacement unit at no additional cost. We do not require the customer to return the defective unit before dispatching the replacement in most cases, minimizing your production downtime.

Prior to shipment, each unit undergoes the following quality checks:

• Visual inspection for physical damage, connector integrity, and shaft condition
• Winding resistance measurement on all three phases
• Insulation resistance test (500V megger, minimum 100MΩ)
• Encoder signal verification (resolver excitation and output signal check)
• Packaging inspection to ensure transit protection

Orders are typically dispatched within 1–3 business days from our Xiamen warehouse. We ship via DHL Express, FedEx International Priority, and sea freight for bulk orders. A tracking number is provided upon dispatch. For urgent requirements, same-day dispatch is available for orders confirmed before 14:00 CST.

For procurement inquiries, bulk pricing, or technical pre-sales support, contact our industrial automation team directly:

• Email: [email protected]
• Phone / WhatsApp: +86 18359293191