The Allen-Bradley 170952 is a crucial PSI board specifically designed for the 1395 series drives, acting as a vital interface between the main control board and the power bridge board. This KIT PCB Power Stage Interface Bull HKVA efficiently distributes AC or DC control power while offering a three-phase line synchronization signal and generating armature and field bridge gate signals based on inputs from the main control board. Included in its advanced microprocessor operations are a control board and a programming terminal interface, which facilitate real-time parameter monitoring and adjustments, as well as enable drive control functions like start and stop actions, significantly enhancing the drive's operational reliability and control capabilities.