Peter electronic fus l5 series 1 phase frequency inverters din rail mounting peter electronic 2t00023220 this 22kw 1 phase ac drive is a din rail mounting unit with a space saving design and features easy installation and programming additional features such as rs485 modbus interface digital keypad with speed potentiometer a pwm clock frequency of 1 to 16khz and adjustable fixed frequencies make this inverter suitable for a range of applications such as pumps grinding machines ventila