ABB, Siemens & Danfoss Drive Repair in the UK
Open industrial drive on the test bench. We identify the root cause of failure at component level — not just replace the board.
ABB, Siemens & Danfoss Drive Repair in the UK — What You Need to Know
At Northern Power Electronics, we repair AC drives, DC drives, and inverters from all major manufacturers — including ABB, Siemens, Danfoss, Control Techniques, Parker, Bosch Rexroth, and Vacon. We work at component level, which means we identify and fix the actual fault rather than simply swapping out the board.
Why Brand Matters Less Than You Think
Many drive manufacturers will tell you the only option after a failure is a full replacement unit. That suits them — it doesn't suit you.
The reality is that most drive failures come down to a handful of common causes: failed capacitors, blown IGBTs, damaged gate driver circuits, or power supply faults. These are repairable. The drive's brand determines the circuit design, not whether it can be fixed.
Our engineers have repaired drives across all the major product families — current models and obsolete units that manufacturers no longer support. If a replacement part exists and the drive chassis is sound, we can almost always repair it.
Brands We Repair
ABB Drives
ACS310, ACS355, ACS550, ACS800, ACS880. Common faults: IGBT failure, DC bus capacitor degradation, control board faults. Current and legacy models.
Siemens Drives
SINAMICS G120, G150, S120 and MICROMASTER 420/440. Common faults: power card failures, gate drive circuit damage, communication board issues.
Danfoss Drives
FC51, FC102, FC202, FC301, FC302 and older VLT series. Typical failures: capacitor wear, fan failure causing thermal damage, rectifier faults.
Control Techniques
Unidrive M, Unidrive SP, Commander, Mentor DC drives. Frequently found where replacement stock is limited or lead times are long.
Parker Hannifin
AC10, AC30, AC890 series. Common in specialist industrial and offshore installations.
Bosch Rexroth & Vacon
IndraDrive, EcoDrive and Vacon 100 series. Common in marine, offshore, and process industry applications.
What Happens When Your Drive Fails?
Most drive failures follow a pattern. The unit trips on a fault code, often under load or after a period of reduced performance. The maintenance team resets it, it runs briefly, then fails again.
At that point you have three options:
For most situations, option 3 is the right call. You can read more in our guide: 5 Ways Industrial Electronic Repair Slashes Your Manufacturing Maintenance Budget →
Our Drive Repair Process
For more detail, visit our Drive Repair Service page →
Offshore and Marine Drive Repair
Drives used on offshore platforms, vessels, and subsea installations present additional challenges: salt air ingress, vibration damage, and moisture contamination are all common causes of failure alongside standard component wear.
We have experience repairing drives from offshore and marine environments — including platform control systems, thruster controllers, and ballast system electronics. These units often cannot simply be replaced, either because the model is obsolete or because the procurement and commissioning process for a new unit would take too long.
If you have a drive from an offshore or marine installation that needs repair, contact us directly to discuss your requirements. We understand the urgency these situations carry.
Obsolete Drives: When the OEM Can No Longer Help
One of the most common situations we encounter is a drive that is no longer manufactured and for which the OEM offers no repair support. Replacement is either impossible or involves costly system redesign.
Component-level repair is often the only viable option. Provided the chassis and major sub-assemblies are intact, we can source replacement components and restore the unit to full function.
Read more: Obsolete Industrial Electronic Repair: How to Keep Legacy Equipment Running →
Frequently Asked Questions
Send Us Your Drive
Fixed-price quote before any work begins. 12-month warranty as standard. No obligation assessment.
