ABB 3HAC038800-001 AC Servo Motor

ABB 3HAC038800-001 — Line Down? This Motor Ships Today from Xiamen

You’re not reading a product page right now — you’re in the middle of a shutdown. The IRB 6650S dropped an axis fault, the cell is cold, and your production manager is already calculating losses per hour. You’ve confirmed the motor. You need the ABB 3HAC038800-001 AC Servo Motor with Pinion moving toward you before the next shift starts. We have it. It leaves Xiamen today.

This is the OEM-specified AC servo motor with factory-assembled pinion for the ABB IRB 6650S heavy-payload robot series — deployed in automotive body shops, foundry transfer lines, and aerospace assembly cells across six continents. It is not a generic substitute. It is not a “compatible” alternative. It is the part ABB specifies, sourced through verified supply channels, inspected before it goes in a box.

Downtime on a 200 kg payload robot running a high-cycle production line can exceed $10,000 per hour in lost throughput. The cost of this motor is a rounding error by comparison. The only variable that matters is how fast it arrives.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Fault codes that put you here:

• 38013 / 38014 — Motor current deviation on axis 1 or 2. Winding degradation or early-stage encoder drift. If you’re seeing this intermittently under load, the motor is telling you it’s failing before it fully drops out.
• 50024 — Joint speed too high. A motor losing torque authority under load will cause the IRC5 drive to overshoot position, triggering this fault. Don’t chase the PID — replace the motor.
• 50296 — Motor temperature excessive. Repeated thermal trips with no ambient cause point to bearing seizure beginning or winding insulation breakdown. Thermal camera on the motor body will confirm.
• 38085 — Resolver signal fault. Swap the feedback cable first. If the fault persists with a known-good cable, the resolver inside the motor body is gone.
• Axis drift under load with no fault code — Classic early bearing wear. The motor holds position at low speed but loses accuracy under full payload. Measure backlash at the gearbox output before condemning the gearbox — the pinion mesh is the first place to check.

Replacement procedure — field-tested sequence:

1. LOTO first, always. Robot in manual mode, brakes engaged, IRC5 cabinet de-energized, stored energy in drive capacitors discharged per ABB procedure. Do not shortcut this step.
2. Export calibration data from the FlexPendant before touching any mechanical connection. Go to Calibration → Fine Calibration → read and record all axis offset values. A photo works. You will need these numbers.
3. Mark the gearbox output shaft position with a paint marker before removing the motor. The shaft must return to the same angular position when the new motor is installed, or your calibration will be off by a full tooth pitch.
4. Disconnect motor power cable and brake cable at the arm-side connector block. Label both if this is your first time on this axis. The brake cable polarity reversal is the most common field error on this replacement — it causes an immediate brake fault on power-up and wastes 30 minutes of troubleshooting.
5. Remove the four M8 mounting bolts. Support the motor body — the pinion assembly adds weight. Do not let the motor hang on the cable connectors.
6. Do not rotate the gearbox ring gear while the motor is out. If it moves, you’ve lost your reference position and will need to perform a full axis calibration from scratch.
7. Install the 3HAC038800-001. Align the pinion to the ring gear by feel — you should be able to mesh the teeth without forcing. If you’re forcing it, the shaft angle is wrong. Rotate the motor body slightly until the teeth drop in cleanly. Torque the M8 bolts to ABB specification (IRB 6650S Product Manual, Section 4.4 — Repair).
8. Reconnect brake cable first, verify polarity, then reconnect motor power cable. Confirm connector locks are fully seated.
9. Power up and perform fine calibration using the calibration pendulum or Leica Absolute Tracker per ABB procedure. If you have the original offset values from step 2, you can use those as a reference to verify the calibration result is within tolerance.
10. Run a slow-speed verification cycle at 10% programmed speed for the first 15 minutes. Monitor axis current on the IRC5 drive module. Normal current draw should stabilize within the first few cycles. Any sustained overcurrent or oscillation indicates a pinion mesh problem — stop and re-check alignment.

Configuration note: The 3HAC038800-001 is a passive motor assembly — no DIP switches, no address configuration, no firmware to match. However, if your IRC5 controller is running RobotWare 6.x and the system has been modified, verify that the MOC.cfg motor calibration file references the correct motor type for the axis being replaced. A configuration mismatch will produce torque limit faults even with a mechanically perfect installation. Check this before you call ABB support.

Reliability in Harsh Conditions

The IRB 6650S platform was designed for environments that destroy standard industrial equipment within months. Foundry transfer lines run sustained ambient temperatures above 50°C with airborne silica particulate that infiltrates every unsealed gap and abrades bearing surfaces. Automotive body shops expose every component to weld spatter, flux fumes, and the kind of high-frequency vibration that fatigues motor windings and fretting-corrodes connector contacts over thousands of operating hours.

The 3HAC038800-001 is built to ABB’s industrial-grade specification for exactly these conditions. The motor housing is sealed to the protection class specified for the IRB 6650S platform. Winding insulation is Class F rated — continuous operation at elevated temperatures without accelerated degradation. The integrated pinion is hardened steel with a precision-ground tooth profile that maintains positional accuracy across the full 200 kg payload range and the full operating temperature envelope.

Bearing preload is set at the ABB factory. There is no field adjustment. This is intentional — field-adjusted bearing preload is a leading cause of premature motor failure in high-cycle robot applications. The factory setting is correct. Install the motor and run it.

Every unit we ship undergoes incoming inspection: housing integrity, connector condition, pinion tooth profile check, and label authenticity verification. Refurbished units are additionally bench-tested for encoder signal quality and no-load current draw before clearance for shipment. We do not ship parts that fail inspection. We do not ship parts we would not install ourselves on a live production line.

Global Express Logistics

Our warehouse is in Xiamen, Fujian — a primary export hub with direct DHL Express and FedEx International gateway access. When you confirm an order, here is exactly what happens:

• Orders confirmed before 15:00 CST: Same-day pick, pack, and carrier handover. No exceptions, no delays for “processing.”
• DHL Express Worldwide transit times from Xiamen: Europe 2–3 business days. North America 3–4 business days. Southeast Asia 1–2 business days. Middle East 3–4 business days.
• FedEx International Priority: Available as an alternative carrier for destinations where FedEx coverage is stronger — Africa, South America, remote Middle East locations.
• Export documentation: Commercial invoice, packing list, and Certificate of Conformity prepared and included with every shipment. HS code declared accurately. No under-declaration, no misdescription — your import compliance is not worth the risk of a customs seizure adding three days to your downtime.
• Tracking: AWB number sent within 2 hours of carrier pickup. Direct tracking link provided. You will know exactly where your part is.
• Emergency protocol: For active shutdowns, contact us on WhatsApp before placing the order. We can confirm physical stock, stage the shipment, and have it moving before the purchase order is finalized. That is how field emergencies get resolved — not through a web form queue.

Contact Information

📧 Email: [email protected]
💬 WhatsApp: +86 18359268345
🌐 Web: siemensplc.com
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