The PLC-5000 system consists of two primary components, a Turbine Control Node (TCN), shown above, and a Leak Detector Node (LDN). Turbine Control Node • Controls the OEM starter coils to start pumps • Monitors multiple LDNs • Performs volumetric leak detection calculations • In the event of a detected leak or other reportable alarm, alarms can be printed, presented on-screen, and output to ATG Systems. - Addition of CH-1101 Communications Hub enables alarm and system status reporting to Building Monitoring Systems, including BAS systems, cell phone, email, and other options. Leak Detector Node • Monitors and transmits line pressure management data to TCN - Line pressure management includes establishing a specific preset line pressure after authorizations end. This allows the system to continuously monitor for leaks or thermal issues.