High Performance PLC Controls Systems Upgrade for Multi-Fan Industrial Facilities

Designing Flexible and Robust PLC Controls Systems

Implementing advanced PLC controls systems within industrial ventilation systems allows for centralized Building Management System (BMS) controls that dramatically improve facility safety, data visibility, and operational responsiveness.

An industrial manufacturer required a comprehensive automation and monitoring solution to centralize oversight of their facility’s extensive air management infrastructure. The company engaged ACS to deliver specialized programming, network integration, and hardware configuration to transform their distributed equipment into a unified, high-performance platform. The resulting upgrade successfully modernized the plant’s operational oversight and emergency response capabilities.

The Challenge

A large-scale industrial facility operating 147 individual ventilation fans faced significant operational inefficiencies because they lacked a centralized management platform. Maintenance personnel and operators were spending excessive time locally investigating the status of each individual fan scattered across the plant floor. To eliminate these manual checks, the client required a robust solution to streamline operations and ensure rapid data interpretation.

The primary goal was to deploy a reliable architecture where an operator could easily evaluate the status of the entire facility’s exhaust ventilation system at a glance. The manufacturer needed an intuitive graphical interface that allowed team members to interpret real-time data quickly and easily without the need for extensive specialized training. The new infrastructure had to be scalable and flexible enough to integrate environmental monitoring devices without requiring a complete overhaul of the existing hardware.

The Solution

Rather than relying on traditional Building Automation System (BAS) hardware, ACS engineered a solution utilizing high-performance PLC controls systems. This PLC-based approach provided substantially more processing capability and system flexibility than a standard, rigid BAS platform typically found in commercial buildings. ACS developed a centralized network architecture consisting of 24 Allen-Bradley SLC 5/04 processors connected over multiple Data Highway Plus (DH+) networks, routing directly to a single master ControlLogix processor equipped with an Ethernet network.

This industrial-grade flexibility allowed the engineering teams to easily accommodate the client’s additional requests during the commissioning phase. ACS seamlessly integrated 35 space temperature sensors and 36 carbon monoxide transmitters directly into the primary automation loop. By anchoring the architecture with robust PLC controls systems and a centralized ControlLogix enclosure, ACS designed a unified platform capable of aggregating critical environmental data and equipment statuses into an RSView 32 and FactoryTalk View ME graphical user interface.

The Outcome

The completed system provides the manufacturer with comprehensive, plant-wide visibility and highly responsive BMS controls. The robustness of the newly integrated building management platform was fully demonstrated during a critical facility incident that caused a section of the plant to fill with smoke. Responding to the emergency from an off-site location, a facility engineer utilized the remote access features of the BMS controls to instantly assess the situation.

Using the intuitively designed graphical interface, the engineer quickly identified and activated all necessary exhaust fans in the affected zone. Within minutes, the entire plant section was completely evacuated of smoke, minimizing downtime and protecting facility assets. The success of this project highlights the reliability of partnering with a systems integrator capable of replacing legacy infrastructure with unified, high-capacity PLC controls systems to manage critical industrial ventilation systems.

Key Features

• Networked 24 existing Allen Bradley SLC 5/04 PLCs over multiple DH+ networks into a single master ControlLogix processor
• Developed a clear RSView 32 and FactoryTalk View ME graphical user interface for at-a-glance status interpretation
• Integrated 35 space temperature sensors and 36 CO transmitters into the core automation network for enhanced facility safety
• Secure Ethernet-based connectivity allowing off-site monitoring and emergency fan control

ACS Services

• PLC and HMI controls programming and software configuration
• Control panel design and fabrication (ControlLogix master processor enclosure)
• Field device procurement and integration
• Full system commissioning, network validation, and startup support