CONTROL TECHNIQUE Repair Services India
Control Technique, founded in the UK in 1983, is a global leader in motion control, variable frequency drives, and servo systems for industrial automation. Their drives power critical manufacturing processes across textiles, metals, cement, and packaging industries. Control Technique's reputation for reliability and precision makes them a trusted choice for OEMs and end-users across India's industrial heartland.
Control Technique, founded in the UK in 1983, is a global leader in motion control, variable frequency drives, and servo systems for industrial automation. Their drives power critical manufacturing processes across textiles, metals, cement, and packaging industries. Control Technique's reputation for reliability and precision makes them a trusted choice for OEMs and end-users across India's industrial heartland.
Synchronics Electronics has repaired 23+ Control Technique product variants since 1994, including AC drives, DC drives, servo amplifiers, and motion controllers. Our Vadodara facility houses engineers certified in Control Technique diagnostics and field-proven troubleshooting methods. Indian plants in Ahmedabad, Surat, Mumbai, and Pune depend on us for rapid Control Technique turnarounds — often same-day fault identification and 48-72 hour repairs.
Expert Control Technique drive and servo repair across all Indian industrial sectors.
CONTROL TECHNIQUE Equipment We Repair — By Category
CONTROL TECHNIQUE Product Lines We Repair
Our engineers are trained on the full CONTROL TECHNIQUE product range. Below are the major product families we service.
Mentor II AC Drives
Mentor II series are compact AC drives for machine tool spindles, pump drives, and fan applications. Common faults include capacitor degradation in high-ambient environments, gate drive circuit failures, and resolver input noise corruption. Indian textile mills and foundries frequently experience thermal stress on these units.
Commander SE Variable Frequency Drives
Commander SE drives handle centrifugal pump control, conveyor systems, and HVAC applications up to 37kW. Common issues include loss of communication on Modbus networks, triac firing circuit failures in humid coastal installations, and cooling fan motor burnout. Synchronics routinely restores Commander SE units experiencing gate oxide breakdown.
Unidrive M600 Universal Drive
M600 is a multi-purpose drive supporting AC induction, DC brushless servo, and synchronous motor control for machine tools and precision automation. Firmware corruption, power stage module failures, and encoder signal loss are prevalent in industrial environments. Synchronics specializes in M600 FPGA reprogramming and servo loop tuning post-repair.
Digitax Servo Drives
Digitax servo amplifiers deliver closed-loop motion control for tool changers, indexing tables, and rotary actuators. Thermal runaway of output transistors, loss of encoder feedback, and CAN bus protocol errors plague older installations. Synchronics rebuilds Digitax servo stages with precision component matching for Indian pharmaceutical and automotive sub-assembly lines.
Unimotor HD AC Servo Motors
Unimotor HD motors paired with Digitax drives create high-performance closed-loop systems for fast-response applications. Winding insulation breakdown, resolver ball bearing wear, and power connector oxidation are endemic in dusty Indian plants. Synchronics offers complete motor winding rewinding and mechanical refurbishment.
Motion Control Modules and Logic Controllers
Control Technique modular controllers handle multi-axis coordination, safety interlocking, and real-time process control. Flash memory corruption, relay contact pitting, and I/O isolation failures are common in EMI-rich environments like steel mills and chemical plants. Synchronics reprograms and recertifies these controllers to original specifications.
Why Choose Synchronics for CONTROL TECHNIQUE Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on CONTROL TECHNIQUE equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common CONTROL TECHNIQUE Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in CONTROL TECHNIQUE equipment arriving at our workshop.
- ✓Gate drive circuit failure - loss of PWM output — Mentor II and Commander SE drives suffer gate drive IC (often TLP250 or equivalent optocoupler) failure due to thermal stress cycles, inadequate heatsinking, or transient overvoltage spikes from load switching. Indian industrial sites with poor power conditioning experience repeated gate drive degradation.
- ✓Resolver encoder signal noise - erratic speed feedback — M600 and Digitax servo drives lose resolver synchronization when shielded cables route alongside unshielded power lines or when connector pins corrode in high-humidity environments. Common in Indian coastal textile mills and sugar factories with saltwater spray ingress.
- ✓Thermal protection shutdown - nuisance power-downs under load — Cooling fan motor burnout or heatsink fouling from dust accumulation causes false over-temperature detection in Commander SE and M600 drives. Inadequate ambient ventilation in Indian plant installations (especially cement, mining, and foundry sites) accelerates thermal sensor drift.
- ✓Loss of Modbus RTU communication - no slave response — RS-485 isolation transformer failures, UART chip malfunction (typically UARTs from Atmel or TI), and firmware version mismatches in Commander SE drives connected to SCADA systems. Power line harmonics from unfiltered variable frequency drives degrade communication signal integrity.
- ✓Output stage power transistor short - breaker trips immediately on start — Unidrive M600 and Digitax servo stages experience thermal runaway and base drive circuit oscillation under transient overcurrent conditions. Poor PCB solder joints on large power devices (IRF640 MOSFETs or similar) fail after 5-10 years of thermal cycling in Indian plants operating 24/7.
- ✓Flash memory corruption - drive enters safe state, no startup — Unidrive M600 and motion control modules experience EEPROM bit flips triggered by electromagnetic interference, lightning transients, or failed power supply rails. Indian electrical infrastructure with poor earthing and absent surge protection creates recurring firmware corruption.
How We Repair Your CONTROL TECHNIQUE Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using CONTROL TECHNIQUE Equipment
We serve plant maintenance teams across all major industries where CONTROL TECHNIQUE automation is deployed.
Frequently Asked Questions — CONTROL TECHNIQUE Repairs
Do you repair Control Technique equipment anywhere in India?+
Yes. Synchronics repairs the full Control Technique product range — AC drives (Mentor II, Commander SE, M600), servo systems (Digitax, Unimotor), and motion controllers. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Surat, and all tier-2 cities. All repairs centralized at our Vadodara, Gujarat facility with 180+ engineers.
What Control Technique drive models do you repair most frequently in India?+
Our highest-volume repairs are Commander SE (HVAC and pump duty in Mumbai and Pune), Mentor II Plus (textile spindle drives in Gujarat), and M600 universal drives (packaging and pharmaceutical automation). We maintain 23+ Control Technique product variants in active repair inventory with factory-equivalent spare parts and firmware images.
How long does a typical Control Technique drive repair take at Synchronics?+
Standard turnaround is 48-72 hours from intake to dispatch, including full diagnostics, repair, testing, and calibration. Emergency expedited repairs (gate drive IC replacement, output stage module swap) can be completed same-day for critical production downtime situations. We provide real-time repair status updates via email and SMS.
Can you repair Control Technique Mentor II drives with corrupted firmware?+
Yes. We read existing firmware via JTAG, restore from backups if available, or reload factory-baseline code directly from Control Technique source files. All firmware parameters (motor constants, loop gains, safety limits) are reconfigured post-programming. We validate restored drives under full-load conditions before shipment.
Do you offer Control Technique drive refurbishment or only repair?+
We offer both. Standard repair replaces failed components only. Full refurbishment includes replacement heatsinks, thermal management upgrades, new cooling fans rated for high-dust environments, connector re-plating, and cosmetic restoration. Indian textile mills often choose refurbishment for 8-10 year-old Mentor II units to extend lifespan 5+ additional years.
How do I send my CONTROL TECHNIQUE unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a CONTROL TECHNIQUE drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on CONTROL TECHNIQUE repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your CONTROL TECHNIQUE unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
CONTROL TECHNIQUE Repair Catalog
Showing 1–24 of 24 CONTROL TECHNIQUE products
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Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
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48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service