Auto-Sequencing of AC Units with PLC
Auto-sequencing of AC units is a process that automatically turns on and off multiple AC units in a sequence to maintain a desired temperature while saving energy. This process is typically controlled by a Programmable Logic Controller (PLC), which is a digital computer used for automation.
Benefits of Auto-Sequencing AC Units
- Energy Efficiency
- Improved Comfort
- Reduced Maintenance
- Increased Reliability
PLC System for Auto-Sequencing of AC Units
The following diagram shows a PLC system for auto-sequencing of AC units:
PLC Programming for Auto-Sequencing of AC Units
The following ladder logic diagram shows a PLC program to control the auto-sequencing of AC units:
Additional Considerations
- Load Sharing
- Fault Detection
- Remote Monitoring
- Integration with Building Automation System (BAS)
Conclusion
Auto-sequencing of AC units with PLC is a powerful tool for improving energy efficiency, comfort, and reliability in buildings. By carefully programming the PLC, building owners and operators can achieve significant benefits.