GRALEX Repair Services India
GRALEX is a German industrial automation manufacturer specializing in programmable logic controllers, process automation systems, and industrial control electronics. With over seven decades of engineering excellence, GRALEX equipment powers critical automation processes across European and emerging markets including India. Their robust PLC and HMI platforms are widely deployed in Indian textile mills, chemical plants, food processing facilities, and pharmaceutical manufacturing units.
GRALEX is a German industrial automation manufacturer specializing in programmable logic controllers, process automation systems, and industrial control electronics. With over seven decades of engineering excellence, GRALEX equipment powers critical automation processes across European and emerging markets including India. Their robust PLC and HMI platforms are widely deployed in Indian textile mills, chemical plants, food processing facilities, and pharmaceutical manufacturing units.
Synchronics Electronics has deep technical expertise servicing GRALEX industrial controllers, I/O modules, and communication gateways used throughout Indian manufacturing. Our 180-strong engineering team repairs the complete GRALEX product ecosystem including their LOGO compact controllers, MICROMASTER frequency inverters, and KTP mobile panels. We maintain original spare parts inventory, perform firmware updates, and deliver factory-equivalent performance on all GRALEX repairs — backed by our 30-year track record.
Synchronics: Authorized GRALEX repair partner with complete PLC and automation controller expertise.
GRALEX Product Lines We Repair
Our engineers are trained on the full GRALEX product range. Below are the major product families we service.
GRALEX LOGO Compact Controllers
Micro PLC controllers for small-to-medium automation tasks, relay output modules, and analog input/output cards. Common issues include input signal loss, relay contact degradation, and firmware corruption under humid industrial conditions.
GRALEX MICROMASTER Variable Frequency Drives
Three-phase AC inverters for pump, fan, and conveyor motor control in Indian manufacturing. Frequent faults include capacitor failure, IGBT short-circuit, and thermal overload trips from dust ingestion in tropical climates.
GRALEX Digital Input/Output Modules
Discrete 16-channel and 32-channel input/output modules with opto-isolation for field signal acquisition. Repair focuses on failed optocoupler chips, damaged terminal blocks, and short-circuit protection fuse replacement.
GRALEX Analog Input Modules
4-8 channel analog signal conditioning for temperature sensors, pressure transmitters, and current loops. Common failures include ADC converter drift, shield grounding noise coupling, and excitation voltage regulation faults.
GRALEX KTP Mobile Operator Panels
10-inch and 15-inch touchscreen HMI units for machine control visualization and parameter adjustment. Screen backlight failure, capacitive touch layer degradation, and communication gateway errors are typical repair scenarios.
GRALEX Communication Interface Modules
Profibus DP, Profinet, and Modbus gateway modules for multi-device network integration. Failures stem from connector pin oxidation, ESD damage to interface chips, and firmware compatibility issues with Indian plant legacy systems.
Why Choose Synchronics for GRALEX 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 GRALEX 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 GRALEX Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in GRALEX equipment arriving at our workshop.
- ✓LOGO Controller Input Signal Loss — GRALEX LOGO controllers experience intermittent digital input failures due to corroded terminal block contacts in high-humidity Indian textile and dye mill environments. Saltwater exposure near coastal facilities accelerates terminal oxidation.
- ✓MICROMASTER Drive IGBT Short-Circuit Fault — GRALEX MICROMASTER 420/430 inverters fail due to IGBT module junction temperature cycling in plants with poor cooling airflow. Thermal cycling from process startup/shutdown causes solder fatigue between die and baseplate.
- ✓KTP Mobile Touchscreen Backlight Failure — GRALEX KTP Mobile HMI panels suffer LED backlight array burnout within 3-4 years in Indian pharma GMP facilities due to continuous 24/7 operation at maximum brightness. Capacitive coupling to power stage creates voltage spikes.
- ✓Analog Input Module ADC Converter Drift — GRALEX AI 4x 4-20mA modules exhibit +/-2% reading drift over 6-12 months due to reference voltage capacitor dielectric absorption in high-temperature equipment enclosures exceeding 55 Celsius.
- ✓Profibus DP Interface Module Communication Timeout — GRALEX CP 5612 Profibus gateway modules lose communication sync when connected to noisy variable frequency drive cables in sugar mills and cement plants. EMI couples into the twisted-pair bus lines.
- ✓Relay Output Card Contact Welding — GRALEX DO relay modules experience contact welding and arc erosion when switching inductive loads (solenoids, contactor coils) without snubber diodes on the LOGO controller output in Indian cement kiln automation systems.
How We Repair Your GRALEX 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 GRALEX Equipment
We serve plant maintenance teams across all major industries where GRALEX automation is deployed.
Frequently Asked Questions — GRALEX Repairs
Do you repair GRALEX equipment anywhere in India?+
Yes. Synchronics repairs the full GRALEX product range — LOGO controllers, MICROMASTER drives, I/O modules, analog cards, KTP HMI panels, and Profibus gateways. We offer PAN-India door pickup and express courier from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and all tier-2 cities. All repairs completed at our ISO 9001 facility in Vadodara, Gujarat. Typical turnaround: 3-5 working days for standard faults, 7-10 days for component re-soldering.
What is the typical repair cost for a GRALEX MICROMASTER 420 drive with capacitor failure?+
GRALEX MICROMASTER 420 capacitor replacement typically costs INR 8,000-12,000 depending on capacitor bank configuration (2.2µF or 4.7µF) and whether secondary cooling fan motor replacement is needed. We provide written quotation within 24 hours of device receipt. Original ABB/SIEMENS equivalent capacitors used (not third-party). Cost includes 12-month warranty on replaced components.
Can Synchronics update GRALEX LOGO controller firmware and fix configuration errors?+
Yes, we offer complete GRALEX LOGO firmware updates, project backup/restore, and configuration debugging. We maintain GRALEX LOGO programming cable and GRANECT software licenses. If your original program is lost, we can reverse-engineer logic from damaged EEPROM chips or help redesign simple automation sequences. Typical firmware update service: INR 3,500-5,000 plus spare parts.
How do I know if my GRALEX KTP Mobile HMI panel is repairable or should be replaced?+
Synchronics can repair nearly all GRALEX KTP Mobile faults: touchscreen response issues, backlight failure, communication card faults, and corrupted runtime files. Only motherboard-level logic chip failure (rare) may justify replacement. We provide free diagnostic evaluation with repair estimate. Most textile mills, pharma plants, and food processors in India choose repair due to cost savings (50-70% less than new) and 2-3 week delivery advantage over spare panel procurement.
Does Synchronics stock original GRALEX spare parts and modules?+
We maintain buffer inventory of common GRALEX replacement modules: LOGO relay cards, digital I/O blocks, analog input/output modules, Profibus interface cards, and KTP panel components. Lead time for direct GRALEX spare imports from Germany is 4-6 weeks. For urgent repairs, we offer OEM-equivalent substitutes from authorized distributors (ABB/Siemens heritage lines). All spare parts supplied with full warranty and test certification.
How do I send my GRALEX 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 GRALEX 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 GRALEX 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 GRALEX 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.
GRALEX Repair Catalog
No products found for GRALEX
Don't See Your GRALEX Model Listed?
We repair the full range of GRALEX industrial electronics — even if the specific model is not yet in our catalog. Send us the unit details and we'll confirm repairability within 24 hours.
Free evaluation • 6-month warranty • PAN India pickup
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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
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service