high quality best price SSD 590 Continental DC speed controller 590P Series Features: 1, volume small, ... PROFIBUS, MODBUS, DEVICENET, EI-BISYNC, LINK, etc. 3, high-resolution analog input and output points, 12bit + 4, simple control ... debugging 5,590 P selection and 590C with the same speed feedback, tachometer generator board / optical code plate 6 ... of frame / size: SSD 590 DC motor speed regulator