Dr. Chandan Dash Explores Building Automation, PLCs, IoT and Energy-Efficient Industrial Systems

Modern buildings and industrial facilities are rapidly adopting automation technologies to improve operational efficiency, energy management, safety, and reliability. Dr. Chandan Dash highlights how Building Automation Systems (BAS), Programmable Logic Controllers (PLCs), Internet of Things (IoT), and advanced HVAC technologies are transforming the way modern facilities are monitored and controlled.

Building Automation Systems and the Role of PLCs

Building Automation Systems integrate controllers, sensors, actuators, communication networks, and software to manage critical building functions. PLCs and Distributed Control Systems (DCS) provide reliable real-time control for mechanical and electrical infrastructure.

Sensors continuously monitor parameters such as temperature, occupancy, air quality, pressure, and electrical loads. Based on this information, actuators can automatically adjust valves, dampers, pumps, motors, and other equipment.

IoT gateways further connect operational technology networks with cloud-based platforms, enabling remote monitoring, centralized data collection, analytics, and system-level visibility.

Improving Energy Efficiency Through Automation

Energy efficiency has become a major focus for modern buildings and industrial facilities. Automation allows HVAC, lighting, ventilation, and other systems to respond to actual operating conditions rather than running continuously at fixed levels.

Demand-controlled operation can adjust HVAC and lighting according to occupancy and environmental conditions. This approach can help organizations manage energy consumption while maintaining suitable indoor conditions.

Data-driven predictive maintenance is another important application. Vibration, temperature, and equipment-performance data can be analyzed to identify potential issues before they develop into major failures. This can support equipment reliability and help reduce unnecessary energy consumption.

Protocols such as BACnet, Modbus, and KNX also support communication between different automation systems, enabling functions such as sub-metering, coordinated control, and automated load management.

PLC Automation in Pharmaceutical Manufacturing

PLCs are particularly important in pharmaceutical manufacturing, where precise and repeatable process control is essential. They can regulate parameters such as temperature, pressure, flow, mixing, drying, granulation, and sterile liquid filling.

Beyond production processes, PLC-based automation can also manage critical utilities, including HVAC systems, clean environments, clean steam, and purified water distribution.

Another major advantage is data logging. Automated systems can record real-time measurements, alarms, system events, and process information, supporting batch traceability and operational monitoring.

Pharmaceutical automation also requires attention to regulatory and validation requirements. Frameworks and standards commonly referenced in the sector include GAMP 5, FDA 21 CFR Part 11, and EU GMP Annex 11. System lifecycle activities can include User Requirements Specifications (URS), Functional Specifications (FS), and Installation, Operational, and Performance Qualification (IQ/OQ/PQ).

ASHRAE and ISHRAE in the HVAC&R Sector

Professional organizations also play an important role in advancing HVAC&R engineering. ASHRAE, founded in 1894, develops technical standards, guidance, and educational resources related to heating, ventilation, air conditioning, refrigeration, energy efficiency, indoor environmental quality, and sustainable buildings.

In India, ISHRAE (Indian Society of Heating, Refrigerating and Air Conditioning Engineers) has contributed to the development of HVAC&R knowledge, professional education, publications, standards, and industry engagement since its establishment in 1981.

Together with international organizations and industry partners, such professional bodies contribute to knowledge sharing and the development of more efficient and sustainable building systems.

Global Manufacturers Driving Automation

Several major technology companies operate across industrial automation and building management. Siemens combines SIMATIC PLC technology with building-management solutions such as Desigo. Schneider Electric offers Modicon PLCs and EcoStruxure building technologies. ABB provides AC500 PLCs alongside building-control solutions.

Other significant manufacturers include Honeywell, Delta Electronics, Emerson, and Bosch, each offering technologies spanning automation, controls, energy management, or building systems.

The Future of Smart and Sustainable Facilities

The convergence of PLCs, IoT, BAS, HVAC automation, data analytics, and energy-management technologies is creating increasingly connected facilities. As organizations seek greater efficiency and sustainability, automation can provide the real-time control and operational data needed to make informed decisions.

The work and technical perspectives associated with Dr. Chandan Dash reflect the growing importance of integrating industrial automation, building technologies, and energy-efficiency practices in the development of smarter and more sustainable facilities.