Siemens PLC Repairing Services

Siemens PLC Repairing Services – Expert Support by Sona Controls

If you’re searching for Siemens PLC Repairing Services, you’ve come to the right place. At Sona Controls, we specialize in diagnosing, repairing, and testing Siemens PLC systems used across a wide range of industrial sectors. From S7-200 to the advanced S7-1500 series, our team delivers fast, reliable, and cost-effective Siemens PLC repair solutions to keep your automation running flawlessly.

Why Choose Us for Siemens PLC Repairing?

✅ 10+ Years of Industrial Experience
✅ Trained Engineers for Siemens PLC Architectures
✅ Original Program Backup & Reinstallation
✅ On-Site & Off-Site Repair Support
✅ Simulation-Based Testing After Repair
✅ Pickup & Delivery Across India

Siemens PLC Series We Repair:

We offer full-service support for all major Siemens PLC series:

🔧 Siemens S7-200:

  • Compact controllers

  • Common in older automation setups

  • I/O repair, communication port replacement, firmware issues

🔧 Siemens S7-300:

  • Modular, mid-range controller

  • CPU, power supply, signal module issues

  • MPI, Profibus communication faults

🔧 Siemens S7-400:

  • High-end modular controllers

  • Used in process industries

  • Repair of redundant CPUs, rack assemblies

🔧 Siemens S7-1200:

  • Modern compact PLC with Ethernet-based communication

  • Repair of CPUs, SMs, CM modules, Web server issues

🔧 Siemens S7-1500:

  • Latest generation, high-performance PLC

  • PROFINET, OPC UA issues, display faults, firmware corruption

🔧 LOGO! Series:

  • Smart relay used in HVAC, small machinery

  • LCD screen, I/O module, and program backup services

Common Siemens PLC Issues We Repair:

Problem Symptoms Our Solution
PLC Not Booting No LED, black screen SMPS or CPU replacement
Communication Error Not connecting to HMI/SCADA Port repair or firmware flash
Faulty I/O Modules Missing input/output signals I/O module replacement
CPU Error or Reset Loop Watchdog error or auto-reboot CPU firmware repair
Overheating PLC shutting down intermittently Fan/heat sink repair or board-level check
Logic Lost Program missing or corrupted Backup recovery & reinstallation

Our Repair Process:

  1. Initial Diagnosis – Full inspection of PLC hardware and software

  2. Component-Level Repair – Replace faulty ICs, capacitors, relays, ports

  3. Logic Backup & Reinstallation – Save or restore original program

  4. Communication Test – Test with HMI, SCADA, and field modules

  5. Final Load Testing – Run real-world simulations to ensure reliability

Industries We Serve:

  • Packaging & Bottling Plants

  • Pharma & Chemical Industry

  • Paper & Pulp Mills

  • Cement & Construction

  • Printing Presses

  • Plastic Injection Molding

  • OEM & Panel Manufacturers

  • Water Treatment Plants

On-Site Siemens PLC Repairing Services

We understand the importance of fast recovery during machine downtime. That’s why we offer on-site Siemens PLC troubleshooting and repairs, especially for:

  • Emergency breakdowns

  • Program recovery

  • Hardware replacement

  • I/O wiring and testing

Our field engineers are equipped with testing tools, programming software (STEP 7, TIA Portal), and diagnostic modules for real-time service.

Locations We Serve

Our Siemens PLC repair services are available across India, with strong service presence in:

  • Delhi NCR (Delhi, Noida, Ghaziabad, Faridabad, Gurugram)

  • Uttar Pradesh (Meerut, Kanpur, Lucknow)

  • Haryana (Panipat, Sonipat, Bahadurgarh)

  • Punjab, Uttarakhand, Rajasthan, Maharashtra