Repair
Control Techniques
Commander · Unidrive · Digitax · Mentor · Operator panels
Repair of Control Techniques inverters and servo drives — Commander, Unidrive, Mentor. Diagnostics and tests.
Diagnostics included in repair
No-obligation quote
12-month warranty
Courier pickup from all of Europe
Post-repair testing
Service Control Techniques — repair scope
Power section
IGBT, capacitor, rectifier, and power module replacement.
Control boards
CPU, flash memory, and communication circuit repair.
Interfaces and communication
Profibus, Profinet, EtherCAT, CAN port repair.
power supplies
Power supply circuit, DC/DC converter, and voltage regulator repair.
Mechanics and cooling
Fan, thermal paste, and gasket replacement.
Functional testing
Load testing, parameter verification, and test protocols.
Why EFIXLAB for repair of Control Techniques?
- Experience — years of practice servicing Control Techniques.
- EOL Devices — we repair discontinued devices.
- Load testing — every device is bench-tested before shipping.
- Fast turnaround — diagnostics up to 5 business days, repair 5–7 business days (after receiving necessary components). As a rule — time may be extended depending on component availability and repair complexity; deadlines agreed individually.
- 12-month warranty — on all performed work.
- Courier shipping — pickup and delivery from all of Europe.
Repair Control Techniques: from request to collection
Request
online or by phone
Shipping
by courier
Diagnostics
included in repair
Quote
& approval
Repair
& testing
Return
with warranty
Report fault Control Techniques — no-obligation quote
Provide the device model Control Techniques and fault description.
Dziękujemy! We have received your request — we will get back to you shortly with a quote and timeline.Frequently asked questions
Repair cost is typically 20–60% of the price of a new device. We send a quote within 24h.
Diagnostics: up to 5 business days. Repair: 5–7 business days after quote approval and receiving necessary components. As a rule — repair time may be significantly extended depending on component availability and repair complexity. Deadlines are agreed individually with the client.
Yes — we specialize in repairing devices no longer available from the manufacturer.
By courier to our Warsaw address. Secure packaging required.
Control Techniques Drive Repair — Unidrive, Commander, Digitax
Control Techniques (now part of Nidec) manufactures variable frequency drives and servo drives used across a wide spectrum of industrial applications. Their product families — Unidrive, Commander, Digitax, Mentor, and Epsilon — cover everything from simple fan and pump control to high-performance multi-axis servo applications. With millions of drives installed globally, Control Techniques equipment is a staple of European industrial automation, particularly in material handling, HVAC, and machine tool applications.
Frequent Control Techniques drive failures include IGBT power module damage from overcurrent events or mains transients, DC bus capacitor degradation causing undervoltage trips, cooling fan failures leading to thermal shutdowns, control board faults including processor and memory failures, and encoder/resolver feedback interface problems. The Unidrive SP and M series frequently exhibit capacitor aging in the DC link, while Commander SK drives are susceptible to input stage failures from poor mains quality.
EFIXLAB provides professional repair for the full Control Techniques product range. Our repair process starts with comprehensive fault diagnosis — power stage testing under controlled conditions, control board functional verification, and communication interface testing (Ethernet, Profibus, DeviceNet, CANopen). We rebuild power stages with matched semiconductor modules, replace bulk DC link capacitors, repair or replace control PCBs, and restore drive parameters to factory or customer-specific settings.
Control Techniques drive repair delivers significant savings, particularly for higher-power Unidrive and Mentor models where replacement costs can be substantial. Typical savings range from 35–65% versus new drive purchase. For discontinued models like the older Unidrive Classic or Commander SE, repair is often the only practical option. All repaired drives are load-tested and carry our 12-month warranty.