UNITRONICS Repair Services India
Unitronics is a leading Israeli automation company specializing in programmable logic controllers (PLCs), human-machine interfaces (HMIs), and industrial control systems. Founded in 1989, Unitronics has built a strong global reputation for cost-effective, compact automation solutions. Their Vision product line and M91+ controllers are widely deployed across Indian manufacturing, food processing, and water treatment facilities seeking reliable, affordable automation with integrated I/O and communication protocols.
Unitronics is a leading Israeli automation company specializing in programmable logic controllers (PLCs), human-machine interfaces (HMIs), and industrial control systems. Founded in 1989, Unitronics has built a strong global reputation for cost-effective, compact automation solutions. Their Vision product line and M91+ controllers are widely deployed across Indian manufacturing, food processing, and water treatment facilities seeking reliable, affordable automation with integrated I/O and communication protocols.
Synchronics Electronics has extensive hands-on expertise repairing Unitronics Vision V series touch panels and M-series PLCs — two core product lines heavily used in Indian industrial automation. Our engineers are trained in Unitronics ladder logic troubleshooting, touchscreen firmware restoration, and communication stack repair. Indian manufacturers trust Synchronics to restore Unitronics controllers quickly, minimizing downtime in critical production environments while maintaining technical compliance with original equipment specifications.
Certified Unitronics Vision and M-series PLC repair — fastest turnaround in India.
UNITRONICS Equipment We Repair — By Category
UNITRONICS Product Lines We Repair
Our engineers are trained on the full UNITRONICS product range. Below are the major product families we service.
Vision Series Touchscreen Panels
Unitronics Vision V series colour touchscreen HMIs with integrated I/O, widely used for machine monitoring and operator interfaces. Common faults include touchscreen unresponsiveness, corrupt firmware, SD card read errors, and Ethernet communication loss affecting plant floor data collection.
M91+ Compact Programmable Controllers
Unitronics M91+ micro PLCs featuring integrated I/O, Ethernet, and RS485 connectivity — ideal for small-to-medium Indian industrial automation. Repair focus includes frozen ladder logic execution, DIN rail power supply degradation, and input/output card failures in harsh manufacturing environments.
Jupiter Series Modular PLCs
Unitronics Jupiter offers modular architecture for scalable automation in Indian textile, pharmaceutical, and packaging industries. Common issues include module recognition failures, hot-swap port damage, and real-time clock battery depletion affecting scheduled task execution.
UniCom Communication Modules
Unitronics UniCom expansion modules enable Modbus TCP, PROFIBUS, and CANopen connectivity for legacy system integration. Repair challenges include protocol stack corruption, RS485 isolation transformer burnout, and flash memory degradation from thermal cycling in Indian power-intensive industries.
uPAC Programmable Automation Controllers
Unitronics uPAC combines PLC, HMI, and I/O in single compact units — popular in Indian water treatment, HVAC, and renewable energy sectors. Typical faults include SD card corruption from power fluctuations, SD slot mechanical wear, and touchscreen calibration loss.
IO-Crexecve Distributed I/O Modules
Decentralized I/O expansion modules for remote sensor and actuator interfacing in large Indian manufacturing plants. Repair issues include connector corrosion from humidity, internal relay contact chattering, and voltage surge damage to input circuits from variable frequency drive interference.
Why Choose Synchronics for UNITRONICS 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 UNITRONICS 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 UNITRONICS Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in UNITRONICS equipment arriving at our workshop.
- ✓Vision touchscreen display frozen or unresponsive — Unitronics Vision screens suffer from firmware corruption after sudden power loss or failed SD card updates — common in Indian plants with unstable grid supply. Corrupted boot sector prevents HMI graphics rendering and user input processing.
- ✓M91+ PLC ladder logic halts mid-execution — Unitronics M-series suffer frozen logic scans when internal watchdog timer expires — typically caused by corrupted program segments, excessive I/O scan cycle, or DIN rail power supply voltage sag in Indian industrial environments with high electromagnetic interference from motors and welders.
- ✓Ethernet communication timeout or Modbus TCP errors — Unitronics controllers lose network connectivity due to corrupted Ethernet driver firmware, damaged RJ45 connector, or failing Ethernet isolation transformer — critical in Indian smart manufacturing setups where real-time data transfer to SCADA systems is mission-critical.
- ✓Real-time clock and scheduled task failure — Unitronics Jupiter and uPAC units experience date/time loss due to depleted backup battery (typical 10-year lifespan) or blown capacitive storage element. Affects time-dependent reporting and automated batch operations common in Indian pharmaceutical and food processing manufacturing.
- ✓SD card read/write failure or file system corruption — Unitronics Vision and uPAC SD card interfaces fail due to mechanical connector wear, thermal cycling, or power-loss-induced file system corruption — extremely common in Indian plants with frequent power fluctuations or inadequate UPS protection.
- ✓Input/output module channel failure or intermittent signal loss — Unitronics I/O cards suffer channel dropout from surge transients (common from variable frequency drives without proper filtering in Indian plants), contact wear in integrated relay outputs, or input amplifier saturation. Intermittent faults cause unpredictable machine behaviour.
How We Repair Your UNITRONICS 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 UNITRONICS Equipment
We serve plant maintenance teams across all major industries where UNITRONICS automation is deployed.
Frequently Asked Questions — UNITRONICS Repairs
Do you repair Unitronics equipment anywhere in India?+
Yes. Synchronics repairs the complete Unitronics product range — Vision HMI panels, M-series and Jupiter PLCs, uPAC controllers, and communication modules. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and all other major cities, with all repairs performed at our certified facility in Vadodara, Gujarat.
Can you recover data from a corrupted Unitronics SD card after power failure?+
Absolutely. Many Unitronics Vision and uPAC units store project files and historical logs on SD cards that become corrupted after sudden power loss. Synchronics uses advanced forensic extraction tools to recover original firmware and project data, then restore the SD card to working condition. We also advise on proper UPS sizing and power conditioning to prevent future corruption in Indian plants with unstable grid supply.
What is the typical turnaround time for Unitronics Vision touchscreen panel repair?+
Standard repairs (firmware reload, touchscreen calibration) complete in 3-5 working days. Complex issues (SD card recovery, component replacement) may require 7-10 days. Synchronics offers express turnaround for critical production equipment — contact our technical team in Vadodara to discuss urgent repair options and courier logistics.
Do you offer preventive maintenance for Unitronics PLCs in Indian manufacturing plants?+
Yes. Synchronics offers scheduled preventive maintenance contracts covering firmware audits, battery health checks, SD card integrity verification, and Ethernet communication diagnostics. Regular maintenance reduces unplanned downtime and extends equipment life — especially critical for Indian manufacturers running 24/7 batch processes where unexpected PLC failure causes significant production loss.
Are Unitronics M91+ spare parts available in India, or must they be imported?+
Synchronics maintains stock of common M91+ replacement components (DIN power supplies, SD cards, batteries, communication modules) at our Vadodara facility. For specialized modules, we coordinate with authorized Unitronics distributors in India to minimize lead time. Our repair approach always prioritizes local sourcing to reduce delays affecting Indian manufacturing schedules.
How do I send my UNITRONICS 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 UNITRONICS 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 UNITRONICS 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 UNITRONICS 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.
UNITRONICS Repair Catalog
Showing 1–2 of 2 UNITRONICS products
Other Brands We Repair in the Same Categories
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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.
Free Evaluation
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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