Overview
We've kept VFDs running on paper machines, extrusion lines, packaging conveyors, HVAC compressors, cement kilns, textile spinning frames and pharma centrifuges. Whether the fault is a burnt IGBT, dried DC-bus capacitors, a failed gate-driver board, corrupted parameters, or a communications glitch on PROFINET / EtherNet-IP / Modbus, our engineers have seen it — and they diagnose the root cause, not just the surface symptom.
Our Repair & Service Process
Fault Logging & Triage
Share the fault code, symptoms and equipment details on +91 91001 61605. We triage severity and dispatch accordingly.
Diagnostics
On-site or bench diagnostics isolate the root cause of the vfd repair — not just the symptom.
Repair Estimate
You receive a clear, no-obligation estimate before any chargeable work begins.
Component-Level Repair
Experienced engineers repair to component level using quality-matched parts and controlled soldering.
Functional Testing
Every unit is powered up and tested per equipment requirements before sign-off.
Installation & Commissioning
We refit, parameterise and commission on site, verifying the line runs to spec.
Warranty & Report
You get repair warranty as per our service terms and a written service report for your maintenance records.
Response Time & Turnaround
| Service Level | Turnaround |
|---|---|
| Emergency Breakdown | Rapid local response |
| Standard On-site | Same / next day |
| Bench Repair (Courier-in) | Typical 3–7 working days |
| AMC / Contract | Priority SLA |
Common Faults & Fixes
OC / Over-current trip on start-up
Cause: Motor cable insulation breakdown, contaminated power stage, or incorrect V/f curve
Fix: Megger the motor cable, inspect IGBT gate-driver board, recompute V/f, and functionally test the drive per equipment requirements.
OV / Over-voltage on deceleration
Cause: Regenerative braking on a high-inertia load without a braking resistor, or bad DC-bus caps
Fix: Fit correctly sized dynamic braking resistor, replace dried electrolytic caps, and set deceleration ramp to match load inertia.
Ground fault (GF/EF) at power-on
Cause: Winding-to-frame breakdown, wet junction box, or drive output leakage
Fix: Insulation-test motor at 500V DC, dry and reseal terminal boxes, and replace output IGBT if leakage traces to the power stage.
OH / Overheat trip after 20-30 min run
Cause: Blocked heatsink airflow, clogged filters, or degraded cooling fan
Fix: Clean the heatsink, replace fan(s), verify ambient below 40°C, and re-torque all power terminals to spec.
Loss of speed reference / F0.15 fault (Delta)
Cause: Damaged analog input channel, EMI on the 4-20 mA loop, or shielded-cable ground loop
Fix: Reterminate shield at drive end only, replace opto-isolator, and route control cable in separate tray.
Fuse blown / OC1 on soft-charge
Cause: Failed pre-charge SCR, dry DC-bus cap, or shorted IGBT rail
Fix: Component-test the DC-bus circuit, replace failed SCR + soft-charge resistor, reform caps or replace bank.
Brands We Service
Independent multi-brand service — we carry the diagnostic know-how, quality-matched parts and firmware tools for every major manufacturer. Brand names below are used only to describe equipment we service.
Industries We Serve
Recent Job Snapshot
Context
A leading food-processing plant near Patancheru operating a critical 150 kW ABB ACS580 line
Fault
Repeated ground-fault trips within 5 minutes of start-up traced to a partially breakdown motor cable and a leaking output-stage IGBT
Action
Our team performed component-level diagnosis and repair on our bench with post-repair functional testing per equipment requirements.
Outcome
150 kW ABB ACS580 restored to full spec inside 96 hours from breakdown call, avoiding an OEM lead time of 6-8 weeks and saving an estimated ₹18 lakh in production loss.
Why IndustrialPro
Dynamometer bench tests every VFD per equipment requirements before dispatch — no 'looks good on the bench' repairs.
Component-level repair on IGBT modules, gate-driver PCBs, DC-bus caps and control boards — not board-swaps.
Exchange inventory of Siemens SINAMICS, Delta MS300 / MH300 / C2000, ABB ACS and Yaskawa V1000 / A1000 for same-day swaps, subject to availability.
Repair warranty per service terms, with a written repair report ready for your audits.
Rapid local response across the Hyderabad industrial belt (typical 2–4 hours in selected areas, subject to availability); emergency support available.
Warranty & Trust
Every job is backed by a repair warranty as per the service terms in your written report, transparent pre-approved estimates, and a written report for your CMMS. Clear diagnosis, transparent charges — just equipment that runs.