CM-MPS21S is ABB’s complete motor protection solution. It provides motor protection, control and monitoring functions in one unit. It is designed to protect the motor against overload, overvoltage and undervoltage as well as providing temperature monitoring, phase asymmetry and unbalance detection. It also has configurable protection curves to match the motor characteristics. It offers a wide range of communication protocols, such as Profibus, DeviceNet, Modbus and CANopen. The hardware has both digital inputs/outputs and analogue inputs/outputs for interfacing with PLCs, SCADA systems and other industrial control systems. The unit is configurable via its inbuilt display, through a USB interface, or via the free software tool that is available from the ABB website. It also provides on-board diagnostics and fault recording. CM-MPS21S complies with IEC60947-4-1 and EN50178 standards.