ABB (Asea Brown Boveri) is a global leader in industrial drives. The AINT, AGDR, and AFIN are critical **spare modules** used in ABB AC/DC drives like ACS800, DCS800, and multidrive systems.
| Part Code | Description | Function | Typical Part Number |
|---|---|---|---|
| AINT | Main Circuit Interface Board | Signal processing between power & control | AINT-14C (68685826) |
| AGDR | IGBT Gate Driver Module | Drives IGBT switching (e.g., FS450R12KE3) | AGDR-71C (68569354) |
| AFIN | Fan Inverter Module | Variable speed control for cooling fans | AFIN-01C |
The IGBT Stack is the power conversion heart of ABB drives, converting DC to variable AC. Found in ACS800, DCS800, and ACS880 series.
Key components include:
| Step | Description |
|---|---|
| 1. Diagnosis | Fault code analysis + thermal imaging |
| 2. Disassembly | Remove AINT, AGDR, IGBTs, busbars |
| 3. Testing | Curve tracer, LCR meter, insulation test |
| 4. Replacement | New AGDR, IGBT, capacitors if failed |
| 5. Rebuild | Thermal paste, torque to ABB spec |
| 6. Load Test | Full dynamic test on ABB test rig |
Turnaround: 3–5 days | Warranty: 12–24 months
Original ABB spares (e.g., AGDR-71C). 2–8 week lead time.
Tested to ABB spec. 50–70% cheaper. 1–3 days delivery.
Send failed AINT/AGDR → get tested spare instantly.
| Drive | Part | Part Number |
|---|---|---|
| ACS800 | AINT Board | 68685826 (AINT-14C) |
| ACS800 | AGDR + IGBT | 68569354 (FS450R12KE3/AGDR-71C) |
| ACS880 | Fan Inverter | AFIN-01C |
| Benefit | Repair | Spare |
|---|---|---|
| Cost | 40–60% of new | 50–70% of new |
| Downtime | 3–5 days | <24 hrs (exchange) |
| Warranty | 12–24 months | Full tested warranty |
Official repair centers worldwide
ABB ACS800 repair & AGDR stock
24/7 emergency AINT/AGDR supply
