Description Pfeiffer TCP 350 Drive Electronics The Pfeiffer TCP 350 drive electronics unit is employed for driving and monitoring the HiPace 80, 300, 400, 700 und 800 turbo pumps. Three different interface models are offered for the TCP 350: RS-485, RS-485 and Profibus, and RS-485 and DeviceNet. The unit includes the power supply and Display Control Unit. It will operate an ActiveLine gauge (except hot cathode). Please inquire for lead time.