19XR Carrier Integrated Starter Module

The Carrier 19XR Integrated Starter Module (ISM) is a dedicated motor control and monitoring module used in Carrier 19XR centrifugal chillers. Installed within the starter cabinet, it manages key starter functions such as compressor start/stop control and interfaces with auxiliary equipment and safety circuits. The ISM continuously monitors important parameters including line voltage, motor current, ground faults, starter status, remote-start signals, and safety inputs, helping provide reliable and safe chiller operation. It also includes safety logic capable of initiating a shutdown when abnormal conditions are detected and can interface with the VFD controller in compatible configurations. With its integrated control and protection functions, the 19XR ISM is an important component for maintaining dependable compressor and chiller performance.