Modicon M171-M172 Logic Controller

Schneider Electric Modicon M171 and M172 logic controllers are compact Nano PLCs designed specifically for HVAC, pumping, and refrigeration applications. These controllers provide reliable and scalable control for machines ranging from small standalone systems to large, networked installations. Built as part of Schneider Electric’s modular PLC architecture, the M171 and M172 platforms support flexible system design through expandable I/O, communication options, and configurable control strategies.

The Modicon M171 series is optimized for HVAC, pumping, and refrigeration machines that operate independently or are not directly connected to building management systems. These controllers are well-suited for compact and mid-sized machines where simplicity and efficiency are required. The Modicon M172 series is designed for connected automation applications and supports communication with building management systems using protocols such as BACnet and LonWorks, making it ideal for larger, networked installations.

Modicon M171 and M172 controllers are available in multiple performance levels to match application complexity. M171 Optimized Logic Controllers are designed for compact and simple machines with minimal footprint requirements. M171 Performance Logic Controllers offer increased I/O capacity, memory, connectivity, and embedded web server functionality for more complex systems. M172 Performance Logic Controllers provide enhanced performance, scalability, and networking capabilities for large, connected HVAC and pumping systems. Together, these controllers deliver dependable automation and long-term flexibility for industrial and commercial control environments.