Variable Speed
Drive Repair
When a Variable Speed Drive (VSD) fails, the impact is often immediate. Production stops, critical processes come to a standstill and maintenance teams are under pressure to restore operations as quickly as possible.
At Fletcher Moorland, we specialise in Variable Speed Drive Repair, Variable Frequency Drive (VFD) Repair, AC Drive Repair, Industrial Inverter Repair and Frequency Inverter Repair, helping manufacturers across the UK minimise downtime and extend the life of their equipment.
Whether you refer to them as Variable Speed Drives, Variable Frequency Drives, VFDs, inverter drives, AC drives or motor drives, our experienced engineers provide a comprehensive drive repair service for industrial applications of every size.
Unlike many repair companies, we don't simply replace failed components. Every drive undergoes a structured diagnostic process to identify the root cause of the failure before repairs begin. From power module failures and damaged IGBTs to control PCB faults and ageing capacitors, our engineers repair drives at component level wherever practical, delivering a reliable and cost-effective alternative to replacement.
As an authorised Nidec Drives Systems Integrator and long-standing repair specialist for leading manufacturers including ABB, Siemens, Control Techniques, Danfoss, Schneider Electric, Lenze and SEW-Eurodrive, Fletcher Moorland combines decades of engineering experience with advanced diagnostic equipment to deliver repairs you can trust.
Whether you need an emergency industrial drive repair, a planned refurbishment or advice on whether repair or replacement is the best option, our engineers are here to help keep your industry running.
Find VSD REPAIR
Fletcher Moorland can be trusted to complete a full refurbishment of your Variable Speed Drive.
We understand the importance of swift service and operate 24 Hours a day, 365 days a year. Meaning we can often offer reduced turnarounds for VSD repairs compared to our competitors.
Located in Stoke-on-Trent, Staffordshire we provide our services, locally and on a national level. With dedicated Area Managers to support your maintenance needs.
Commonly Maintained Drives
ABB
Fletcher Moorland specialise in the repair, refurbishment, and maintenance of ABB drives, delivering reliable engineering solutions that extend the life of your equipment and reduce costly downtime. Our experienced team supports a wide range of ABB variable speed drive models.
ABB drives are widely used for their energy efficiency, precision control, and proven performance across industrial applications. Whether it’s an AC, DC or Servo Drive, our engineers are equipped to carry out detailed diagnostics, component-level repairs, and full functional testing. We offer in-house repair services and operate a 24/7 service to keep your operations running smoothly, day or night.
With a strong focus on sustainability and value, repairing ABB drives with Fletcher Moorland is a cost-effective alternative to replacement.
ACS150
ACS400
ACS500
ACS550
ACS800
ACS850
ACS880
DCS Series
SIEMENS
Fletcher Moorland provides expert repair and refurbishment services for Siemens drives, supporting a wide range of legacy and current models used across industrial automation and control. Our engineering team has extensive experience working with Siemens 611 Series, Micromaster, Masterdrive, Simoreg, Sinamics, and Simodrive units. These drives are critical to maintaining performance, speed control, and energy efficiency in demanding applications. We carry out full diagnostics, component-level repairs, and load testing to return your drive to full operational condition. Whether your drive has developed a fault, suffered from component failure, or needs preventative refurbishment, we’re here to help.
Fletcher Moorland offers a cost-effective, sustainable alternative to sourcing new Siemens drives, keeping your operations running and reducing unplanned downtime.
611 Series
Micromaster
Masterdrive
Simoreg
Sinamics
Simodrive
Control Techniques
When it comes to Control Techniques drive repairs, Fletcher Moorland combines a deep technical understanding with decades of hands-on experience. We work with a wide variety of models including the Unidrive SP, Unidrive M Series, Commander SK and SE, Digitax ST and DBE, and the full Mentor range, Mentor II and Mentor MP. These drives are commonly in industrial operations where precision, performance, and reliability are key. Our in-house repair process includes detailed fault diagnostics, part replacement, and final load testing to ensure full functionality. If a fault is difficult to trace, our engineers can assist with onsite fault identification to help speed up the repair process.
Fletcher Moorlands Drive & Controls repairs focus on extending equipment life and reducing unnecessary waste.
Unidrive
Unidrive SP
Unidrive M Series
Commander SK
Commander SE
Digitax ST
Digitax DBE
Mentor
Mentor MP
Mentor II
Lenze
Fletcher Moorland are experienced Lenze drive repairers. We offer fast, reliable, and cost-effective drive repairs to keep your automation systems running smoothly. Our expert engineers repair and refurbish a wide range of Lenze drive models, including the SMD Drive, 8200, 8400, 9300, 9400, and the i510 and i550 series. These variable speed drives are widely used across manufacturing, logistics, and automation industries, we understand how critical that makes uptime. Whether it's a fault, wear-and-tear, or preventative maintenance, we carry out full diagnostics and component-level repairs in our purpose-built workshop. All units are tested under load to ensure performance and reliability.
Choosing Fletcher Moorland, based in Stoke-on-Trent, Staffordshire to repair your Lenze drive avoids expensive investment in new equipment and reduces waste going to landfill.
SMD Drive
8200 Series
8400 Series
9300 Series
9400 Series
I510 Series
I550 Series
B&R
At Fletcher Moorland we offer expert B&R drive repairs. As a 24 Hour repair centre we focus on fast, efficient repairs helping reduce any downtime. Our dedicated electronics engineers and drive repair specialists are experienced in servicing the full range of B&R ACOPOS drives, including ACOPOS, ACOPOS multi, ACOPOS micro, and the high performance ACOPOS P3 series. These drives are known for their integration within complex automation systems, and our team understands the demands they face.
To ensure every unit meets performance expectations, we’ve developed a custom-built B&R ACOPOS test rig,allowing us to carry out full functional testing under load conditions before any unit leaves our facility. Whether you're facing unexpected faults or planning proactive refurbishment, our B&R Acopos repair service delivers a sustainable, cost-effective alternative to replacement; without compromising on reliability.
ACOPOS
ACOPOS MULTI
ACOPOS MICRO
ACOPOS P3
Allen Bradley
Fletcher Moorland are a trusted provider of repair services for Allen-Bradley drives, supporting a wide range of models including PowerFlex, Kinetix, and the legacy 1394 Series. These drives are integral to many motion control and automation systems, and when issues arise, downtime can be costly. Our team of skilled electronics engineers and drive repair specialists have the knowledge and equipment to restore these units with precision.
Supporting the repair process, we’ve developed a custom-built Allen-Bradley test rig, designed specifically to assist in diagnosing faults and verifying drive operation.
Whether you're maintaining older equipment or troubleshooting an intermittent fault, you can depend on Fletcher Moorlands experts to repair your Allen-Bradley drive, extending the life of your assets.
Powerflex
Kinetix
1394 Series
ELAU
Offering professional ELAU drive repair services at Fletcher Moorland. We support a wide range of PACDrive automation systems, including the PS-5, DB-5, and PMC-2 modules.
These components are often critical to high-speed packaging and motion control systems, where reliability and precision are essential. Our team of experienced electronics engineers and drive repair experts excel in repairing and refurbishing these complex systems.
With our 24/7 workshop availability and a focus on sustainable engineering, Fletcher Moorland helps extend the life of your ELAU drives, reducing both downtime and the cost of equipment replacement.
PACDrive
PS-5
DB-5
PMC-2
KEB
Looking for  KEB drive repair services? Fletcher Moorland support a wide range of models including the F5, F6, R5, and R6 series. These drives are commonly found in demanding industrial environments where dependable motor control is vital. Our skilled electronics engineers and drive repair specialists are experienced in working with KEB’s drive technology, providing detailed diagnostics, high-quality repairs, and refurbishment that can meet, or exceeds original performance levels.
Whether dealing with power faults, communication issues or ageing components, we offer a fast turnaround to minimise downtime and extend the life of your equipment.
Choosing to repair your KEB drive at Fletcher Moorland is the sustainable, cost-effective choice.
F5
F6
R5
R6
What is a Variable Speed Drive?
A Variable Speed Drive (VSD), also commonly known as a Variable Frequency Drive (VFD), AC Drive, Frequency Inverter or Inverter Drive is an electronic device used to control the speed, torque and direction of an electric motor.
Rather than running a motor at full speed continuously, a Variable Speed Drive adjusts the voltage and frequency supplied to the motor, allowing equipment to operate only at the speed required for the application. This not only improves process control but can also significantly reduce energy consumption, minimise mechanical wear and extend the lifespan of connected equipment.
Variable Speed Drives are widely used across industry to control:
- Pumps
- Fans
- Compressors
- Conveyors
- Mixers
- Extruders
- Packaging Machinery
- HVAC Systems
- Cranes & Hoists
- Water Treatment Equipment
- Food Processing Machinery
- Automated Production Lines
When a drive fails, these critical systems can quickly become inoperative, leading to costly production downtime. That's why rapid diagnosis, expert repair and thorough testing are essential before returning equipment to service.
Key services
- AC inverter drives
- DC thyristor drives
- Servo drives
- Stepper drives
- Soft starters
- 350 Amp load test bench
- Full refurbishment and upgrade of wearing parts
- Replacement of capacitors, opto-isolators, relays, cooling fans, analogue switches
- IPC7711/21 rework standards
- Thermal image capture of PCBs
- Extended performance testing
- SERVICEview video of testing
- 12 month standard warranty
- Heidenhain programming
- Mitchell TI300 & TI5000
4 Simple Steps to Getting Your Variable Speed Drive Back in Action
Nationwide Collection
For most Variable Speed Drive Repairs we arrange nationwide collection using our own fleet of vehicles. Simply tell us the equipment type, fault details, and urgency (we do offer a premium service for Emergency work).
Should we not be able to collect with our own fleet, we work with a number of approved courier suppliers who can collect & deliver your unit to our workshops in Stoke-on-Trent, Staffordshire.
VSD Repair Process
We’re not the type of company to just repair a fault then send the VSD back to you, if some components have aged or failed then it could just be a short time later that others do. Our VSD repair process is a full refurbishment. We will replace all components that either have a ‘hard’ fault or those that we know degrade with age. In most cases we will replace with components that have a higher working temperature threshold as we know these will last longer. Typical components are electrolytic capacitors, opto-isolators, relays and cooling fans. All solder joints are reflowed too, as we know this helps to provide a long-lasting refurbishment.
The final critical step is the verification of our repair work. All VSDs are powered up with a suitable motor and are run under loaded conditions. We fortunately have a 350 amp load rig to test all VSDs. Under load, a VSD is working hard, it’s doing what it would on site and all components are being fully tested. It’s only after a satisfactory load test that we will send a repaired VSD back to you. As a verification, a SERVICEview video of the test will be emailed.
Emergency VFD Repair
Unexpected Variable Speed Drive failures rarely happen at a convenient time. Whether it's a failed conveyor drive stopping production, a pump inverter tripping repeatedly or a packaging line refusing to restart, every minute of downtime can impact productivity and profitability.
Our engineers understand the pressure maintenance teams face when critical equipment fails.
That's why Fletcher Moorland offers a responsive Variable Speed Drive Repair Service designed to diagnose faults quickly, repair drives efficiently and return equipment to service with minimal disruption.
From obsolete inverter drives through to the latest intelligent Variable Frequency Drives, our workshop supports a wide range of industrial applications across manufacturing, food production, water treatment, logistics, rail and energy sectors.
If repair isn't the most economical solution, our engineers can also advise on replacement options, upgrades and retrofit solutions through our partnerships with leading drive manufacturers.
