WEG has launched a new frequency inverter CFW501 that has been designed to meet the needs of the heating, ventilation and air conditioning (HVAC) industry. The robust, compact and easy-to-use drives are currently available with a power range from 0.18 to 7.5 kW and are suitable for applications in buildings, such as hospitals, schools and universities, for cooling and heating systems in commercial buildings, as well as for all pump and fan applications in general. The units include a built-in micro-PLC, programmable according to IEC 61131-3, and an advanced intuitive HMI. The interface offers specific engineering units for HVAC applications, such as bar, mbar and m³/h, and is also available as a remotely controlled version for installation in a panel door. To allow for direct communication with the most important protocols in building automation, the inverter supports Bacnet, MetaSys N2 and Modbus-RTU.