Prathisa Prathisa

PLC programmer with experience in industrial automation and control systems, proficient in PLC programming, ladder logic development, HMI configuration, Electrical drawing, Panel wiring and troubleshooting. Committed to delivering reliable and performance-driven automation solutions.

Automation Engineer at SummitsHygronics Private Limited (2025-02 – 2026-06)

Compressed Air & Gas Purification Systems

• Developed complete PLC programming control logic for a dual-stage compressed air drying system integrating refrigeration and desiccant technologies.
• Implemented tower switching sequence logic for adsorption and regeneration cycles.
• Programmed heater-based purge regeneration control including timed heater ON/OFF logic with temperature monitoring.
• Designed heater protection logic including over-temperature trip and low inlet pressure interlock with automatic heater shutdown.
• Integrated temperature, pressure, and dew point sensors for precise process monitoring and control.
• Designed and configured HMI screens for real-time parameter display, system status, and alarm visualization.
• Configured fault detection and alarm indication in HMI for safe and reliable operation.
• Validated PLC I/O wiring and supported panel wiring activities, ensuring correct module slot allocation and resolving signal mismatches during integration and testing.
• Conducted system testing, troubleshooting, and commissioning to ensure stable field performance and Automation control panel Wiring.
• Enabled remote HMI access via VNC protocol for mobile-based real-time monitoring and diagnostics. Remote debugging, program modifications, and real-time support
• Developed PLC program logic for automated ON/OFF actuation of co-axial valve for endurance testing. Implemented 4s ON / 4s OFF cyclic control with automatic counting up to 1 million cycles.
• Integrated limit switches for piston position verification and stuck detection.
• Programmed alarm logic for actuation failure and pilot pressure mismatch.
• Implemented seat leakage detection using outlet pressure transmitter with threshold alarms.
• Configured HMI-based parameter setting and real-time monitoring.
• Conducted long-duration life cycle validation and fault analysis.
• Commissioning & Troubleshooting and Automation control panel wiring.
• Developed PLC ladder logic for automatic operation of the heatless compressed air dryer.
• Implemented automatic tower switching sequence for adsorption and regeneration cycles. Integrated pressure and dew point sensors for efficient process monitoring.
• Configured HMI screens for real-time monitoring, parameter setting, alarm indication, and fault diagnostics.
• Performed PLC I/O configuration, testing, troubleshooting, and commissioning.
• Worked with Siemens PLC program, Allen-Bradley (AB) HMI, VFD control, Commissioning & Troubleshooting, Automation control panel wiring. system integration.

Automation Engineer at Atpro Systems & Controls Pvt.Ltd (2026-07 – Present)

• Prepared technical and commercial quotations based on customer specifications and project requirements.
• Obtained and compared vendor quotations to determine material pricing and project cost.
• Developed BOMs covering PLC, HMI, VFD, SMPS, relays, contactors, MCCBs, terminal blocks, enclosures and other panel components.
• Coordinated with vendors and internal engineering teams for component pricing, technical clarifications and lead-time information.
• Calculated material cost, labour/assembly cost, overheads and applicable margins for quotation preparation.
• Prepared quotation revisions based on customer clarifications, scope changes and commercial negotiations.
• Maintained costing sheets, quotation records and project-wise estimation documents using MS Excel.

BE in Instrumentation & Control Engineering – Anna University (2021 – 2025)

– Tamilnadu College of Engineering - coimbatore