Sieb & Meyer offers the SD2B frequency inverter in a version with additional functions and an IP20 housing. The SD2B Plus enables sensor-based control on the basis of TTL encoders, so that motors can be operated with speed or torque control from zero speed. The option of sensorless control for low-voltage asynchronous and synchronous motors with speeds of up to 120,000 rpm remains available. The frequency inverter also offers the STO safety function and an internal logic voltage supply as standard; the external 24 V (DC) supply can be omitted. The frequency inverter is equipped with an IP20 housing with a height of 25 mm and offers two TTL encoder inputs and outputs, five digital inputs/outputs and a USB interface for easy parameterization.