SINAMICS G120 - Standard Inverter - Control Unit SINAMICS G120 is a modular inverter system that essentially comprises two function unit: Power Module (PM) and Control Unit (CU). The Control Unit controls and monitors the Power Module and the connected motor in several different modes. It supports communication with a local or central controller and monitoring devices. The CU240 Control Units are suitable for a wide range of applications in general machine construction, such as conveyor belts, mixers and extruders. Control Unit G120 Free function blocks (FFB) 1x PID controller Motor holding brake Digital and analog I/O’s To use together with the Power Unit (PU) Different versions available: CU240B-2, Control Unit with USS and Modbus RTU, stock-no. 793-2128 CU240B-2 DP, Control Unit with Profibus DP, stock-no. 793-2121 CU240E-2, Control Unit with USS and Modbus RTU and Basic Safety Functions (STO), stock-no. 793-2125 CU240E-2 DP, Control Unit with Profibus DP and Basic Safety Functions (STO), stock-no. 793-2134