Refineries & Petrochemical Plants
The processing of gas is regulated with steam turbines, reactors, pumps, and mixers.
High-Performance PLC Panels for Industrial Automations
At Preipolar Engineering, we specialize in designing and manufacturing high-quality PLC (Programmable Logic Controller) panels for a wide range of industrial applications. Our expertise includes Gas Turbine Panels, Steam Turbine Panels. Built with industrial-grade components, redundant safety systems, and user-friendly HMI interfaces, our PLC panels ensure reliability, scalability, and optimized process control while minimizing downtime.
Preipolar Engineering is an ISO-certified company in Chennai specializing in customized PLC panel solutions that meet IEC, ANSI, and international safety standards. The oil and gas industries, power generation and automotive and pharmaceutical industries use fully tested and rugged panels as they improve performance with high security levels, real-time monitoring and faultless connection of the SCADA/DCS connectivity
Types and Core Features of Preipolar PLC Panels In Chennai
Gas Turbine Control Panel (GTCP)
The central system for monitoring, control and safety of gas turbines during start-up, operation and shutdown. It ensures safe and efficient turbine performance by coordinating fuel flow, speed, temperature, pressure and other important parameters.
Main Functions
- Start-up & Shutdown Control : Automatic sequencing for safe turbine start-up, normal, and emergency shutdown.
- Speed & Load Control: It governs turbine speed during no-load conditions and maintains stability during load changes when connected to the grid.
- Fuel Flow Regulation: It regulates fuel flow to maintain the required turbine output while preventing surge, flame-out, or over-fueling.
- Protection & Safety: It monitors critical alarms such as over-speed, high exhaust temperature, low lube oil pressure, and vibration, and automatically trips the turbine during unsafe conditions.
- Monitoring & Diagnostics: It displays key parameters such as speed, load, exhaust gas temperature (EGT), vibration, bearing temperature, and lube oil condition, while also providing trend logs and fault history for maintenance.
Key Safety Interlocks
- Overspeed Protection (mechanical & electronic trip)
- High Exhaust Temperature Trip
- Low Lube Oil Pressure Trip
- High Vibration Trip
- Emergency Stop Button (manual trip)
Types of Panels
- Local Control Panel (LCP): Installed near the turbine for field control and monitoring.
- Remote Control Panel (RCP): Located in the control room; communicates with the LCP.
- Integrated Control System: Fully incorporated into a plant’s DCS/SCADA system.
Steam Turbine + Compressor Control Panel
A Steam Turbine + Compressor Control Panel is an integrated control and protection system designed to operate, monitor, and protect a steam turbine-driven compressor unit. Since the turbine is the driver and the compressor is the driven equipment, the panel ensures synchronized operation, interlocks, protection, and safety shutdowns for the entire train.
Purpose
- Start-up, running, and shutdown control of the steam turbine.
- Speed and load control of the turbine to match compressor process requirements.
- Monitoring and protection of both turbine and compressor.
- Emergency trip functions to protect equipment and personnel.
- Integration with plant DCS/ESD systems.
Main Functions
- Turbine Control: Speed, load, steam valve actuation, overspeed protection, temperature & pressure monitoring.
- Compressor Control: Suction/discharge monitoring, surge protection, vibration & bearing temperature monitoring, performance tracking.
- Integrated Protection: Emergency shutdown, trip signals, fire & gas interlocks.
- Operator Interface: Local HMI or touchscreen, manual controls for start, stop, reset, and trip acknowledgement.
Typical Components of Preipolar PLC Panels
| Panel Type | Key Components |
|---|---|
| Gas Turbine Control Panel (GTCP) | PLC/DCS systems (Siemens, Allen-Bradley, GE Mark VIe), HMI/SCADA interface, instrumentation inputs such as speed sensors (magnetic pickups), temperature sensors (RTDs, thermocouples), pressure transmitters, vibration probes, and outputs including fuel valve actuators, start-up motors (igniters, lube oil pumps), trip/shutdown relays, and protective relays & safety circuits (for overspeed, fire detection, etc. |
| Steam Turbine + Compressor Panel | PLC/TMC (Turbomachinery Controller), Speed governor + hydraulic actuator, Anti-surge controller, Trip relays & ESD logic, HMI/SCADA, I/O modules (vibration probes, RTDs, pressure transmitters, valve actuators), Communication modules. |
Why Choose Preipolar for PLC Control Panels in Chennai?
Industry Experience
With 16+ years of industry experience since 2008, we design PLC panels tailored to each sector’s specific process requirements.
Modern Technology
Uses latest PLC technology with SCADA, data logging, and event sequence capturing; integrates with existing systems.
Quality, Reliability & Compliance
Rigorous testing ensures durability, long service life, and consistent performance; compliant with IEC, ATEX, and IECEx standards.
Support & Service
Assistance from consultation to after-sales maintenance, including troubleshooting, programming, and periodic service.
Applications of Turbomachinery & PLC Panels Across Industries
Power Plants
Gas and steam turbines and compressor panels control generators, boiler feedwater pumps and load distribution.
Oil & Gas
PLC and gas turbine panels are used to monitor drilling, production, compressors and performing safe emergency shutdowns.
LNG Facilities
Gas liquefaction processes are run by steam turbines-compressed refrigerant compressors.
Mechanical Drives
Gas turbines are used for reliable operation in power generation or process drives.
Get Expert Engineered PLC Panels for Your Industry
Connect with our experts to get technical guidance, specification support, and a prompt quote for PLC panels designed for your industrial automation needs.
Common Questions About PLC Panels & Their Applications
A PLC Control Panel is an industrial control system, which is used to handle sensor inputs, run programmed logic, and control machinery such as turbines or compressors to run safely and efficiently.
We are involved in designing and supplying of PLC panels that are custom made for each of the domain requirements and specific equipment needs.
The Preipolar PLC panels are provided with emergency shutdowns, overspeed and overpressure trips, vibration monitoring and real-time diagnostics to ensure the safety of both the equipment and personnel operating in dangerous and risky conditions.
Yes. Our entire range of PLCs have the ability to communicate with SCADA/DCS using Modbus, Profibus, Ethernet/IP or OPC, which allows us to easily integrate with the rest of the plant-wide monitoring and control systems.
Absolutely. They have strong enclosures (IP65/IP66) and corrosive-resistant enclosures and can work in the oil and gas, chemical, and power sectors in extreme conditions and are very reliable in these sectors.
Our panels are also designed in a much easier way (modular). This allows them to be easily expanded, components changed and optional redundant facilities to be provided to enable critical functions in case of a failure, thus making them reliable and flexible in the long term.
They are used in oil and gas, petrochemical, power generation, water treatment, automotive, pharmaceutical, tire making, cement, metal, textile, mining and marine facilities as well as renewable energy facilities.
Designs are all undertaken following the Specific Industry standards as required by the country where it is to be installed or domain specific guidelines. This precision design is done using AutoCAD and ePlan and is tested thoroughly to ensure operational reliability and safety.
Yes. All of our PLCs can interface with SCADA/DCS through Modbus, Profibus, Ethernet/IP or OPC and hence we can easily interface the rest of the monitoring and control systems in the plant.
Your process requirements, equipment requirements, and control requirements can be shared to our team at Preipolar Engineering. The process that will be undertaken by our team is to design, manufacture and commission a custom PLC panel solution meeting your and industry requirements.
