ABB 3HNA024871-001ACU-01B Replacement for IRB Series
3HNA024871-001ACU-01BABB 3HNA024871-001ACU-01B robot axis gearbox replacement & upgrade for IRB series. Drop-in compatible, 12-month warranty, fast global shipping from TOPNLMS.
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The ABB 1910061947 (also referenced as D1724-20B, B1724-20B, 3N3745W, 2C0683, and 3HS2000-01) is a precision air bearing motor engineered for ABB’s industrial robot platforms, including the IRB paint robot and process automation series. When your existing air bearing motor reaches end-of-life, shows encoder drift, bearing wear, or winding degradation, this direct replacement unit restores full axis performance without requiring mechanical re-engineering or control system reconfiguration.
Facilities running ABB IRB 5500, IRB 5400, or IRB 580 paint robots frequently encounter the challenge of sourcing this motor as ABB transitions legacy drive components. The 1910061947 / D1724-20B unit is a drop-in replacement that maintains the original mounting footprint, shaft dimensions, and connector pinout — eliminating the need to modify the robot arm structure, cable harness, or axis controller parameters stored in the ABB IRC5 or S4C+ robot controller.
| Parameter | Original / Legacy Unit | Replacement: ABB 1910061947 D1724-20B |
|---|---|---|
| Part Numbers | D1724-20B / B1724-20B / 3N3745W / 2C0683 / 3HS2000-01 | 1910061947 — all cross-references supported |
| Motor Type | Air Bearing Servo Motor | Air Bearing Servo Motor (direct replacement) |
| Mounting Interface | Original ABB robot arm flange | Identical flange pattern — no mechanical modification |
| Connector / Pinout | OEM ABB multi-pin motor connector | Identical pinout — direct cable reconnection |
| Encoder Compatibility | ABB resolver / encoder standard | Fully compatible — no axis re-mastering required* |
| Communication Protocol | ABB IRC5 / S4C+ drive interface | Compatible with IRC5 and S4C+ axis drive modules |
| Power Supply | ABB axis drive DC bus | Same voltage and current rating — no drive reconfiguration |
| Installation Space | Standard ABB robot axis cavity | Same envelope dimensions — no housing modification |
| Replacement Recommendation | Worn bearing, encoder fault, winding failure | Direct swap — restore axis torque and positioning accuracy |
| Warranty | — | 12-Month Warranty from TOPNLMS |
*Axis re-mastering via ABB RobotStudio or FlexPendant may be required after physical replacement as per ABB standard commissioning procedure.
A successful air bearing motor replacement on an ABB robot platform rarely involves the motor alone. During the retrofit process, engineers typically inspect and — where necessary — replace adjacent components to ensure the axis returns to full specification. The ABB DSQC 661 axis computer and the ABB DSQC 662 drive unit are the most common co-replacement items when the 1910061947 motor has failed due to an axis drive fault rather than a purely mechanical bearing failure. If the fault originated in the power chain, the ABB DSQC 609 power supply unit should be tested and replaced if output voltage is out of tolerance.
For facilities upgrading from an S4C+ controller to an IRC5 platform as part of a broader robot modernization project, the ABB DSQC 639 main computer board and the ABB DSQC 643 I/O unit are frequently part of the bill of materials. The motor resolver signal must be verified at the ABB DSQC 668 resolver board to confirm signal integrity after the new motor is installed. In paint robot applications, the ABB DSQC 352 process interface board governs atomizer and shaping air control and should be confirmed operational before final axis commissioning.
Cable integrity is a common oversight in motor replacement projects. The ABB 3HAC031683-001 motor cable assembly and the ABB 3HAC026518-001 signal cable are the standard harness components for this axis. Inspecting and replacing these cables during the motor swap eliminates the risk of intermittent faults after recommissioning. Where the robot operates in a paint booth or hazardous atmosphere, verifying the integrity of the ABB 3HAC14550-1 sealing kit is also recommended before returning the robot to production.
Q: Will the 1910061947 D1724-20B fit without modifying the robot arm structure?
A: Yes. The replacement unit maintains the original mounting flange pattern, shaft diameter, and overall envelope dimensions of the OEM part. No mechanical modification to the robot arm or axis housing is required.
Q: Do I need to update the ABB IRC5 or S4C+ controller parameters after replacement?
A: Motor parameters (motor type, gear ratio, inertia) are stored in the robot system configuration. If the replacement unit is an identical cross-reference to the original, no parameter changes are required. Axis re-mastering (calibration) via the ABB FlexPendant is recommended after any motor replacement to restore positional accuracy.
Q: Is the encoder / resolver signal compatible with the existing axis drive?
A: Yes. The 1910061947 uses the same resolver interface as the original OEM unit. The ABB DSQC 668 resolver board will recognize the signal without firmware changes. Verify resolver cable continuity before powering the axis.
Q: What communication protocol does this motor use with the robot controller?
A: The air bearing motor interfaces with the ABB axis drive via the standard ABB drive bus. It does not use an independent fieldbus protocol (e.g., PROFIBUS or DeviceNet) — communication is handled entirely through the axis drive module and the IRC5 or S4C+ motion controller.
Q: Can this motor be used in a paint booth (Ex-zone) environment?
A: The 1910061947 is designed for ABB paint robot applications. Confirm the Ex-rating of your specific installation against ABB’s robot documentation and local ATEX / IECEx requirements before installation in classified hazardous areas.
Q: How long does installation and commissioning typically take?
A: Experienced ABB robot technicians typically complete motor replacement and axis re-mastering within 4–8 hours, depending on access to the axis and availability of the ABB FlexPendant calibration tools. Downtime can be further reduced by pre-staging the replacement motor and verifying all cable assemblies before the maintenance window.
Every ABB 1910061947 D1724-20B air bearing motor shipped by TOPNLMS is covered by a 12-Month Warranty from the date of delivery. Prior to dispatch, each unit undergoes outgoing inspection including visual examination, dimensional verification, and functional testing where applicable. Units are packed in anti-static, shock-resistant packaging to prevent transit damage.
In the event of a warranty claim, TOPNLMS provides replacement support with a target response time of 1 business day. Defective units are assessed and — where confirmed as a manufacturing or quality defect — replaced at no additional cost. Our procurement team maintains stock of the 1910061947 and its cross-reference part numbers to minimize lead time for both initial orders and warranty replacements.
For urgent plant shutdowns or unplanned downtime situations, expedited shipping from our Xiamen warehouse is available to most destinations in Asia, Europe, and the Americas. Contact our sales team to confirm stock availability and shipping timeline before placing your order.
TOPNLMS supplies industrial automation components to maintenance engineers, procurement teams, and system integrators worldwide. All products are sourced through verified supply channels and are subject to quality inspection before shipment.
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