The CPVA (Cantilever Piezoelectric Vibration Absorber) is a mechanism that combines working principles of DVA and energy harvesting to reduce vibration while generating voltage. The system's response that need to be reduced by the CPVA is a plat as a primary mass which has 3 degree-of-freedom those are translation, rolling, and pitching vibration direction. The optimum configuration of this mechanism has the objective in order to reach a maximum percentage of reduction while generating voltage. The variation of piezoelectric's amount and several nodes position where its mechanism is installed on the primary system need to be optimally selected to implement satisfactory performance. Simulation provides valuable insights in dynamical characteristics in each nodes and results the optimum value of the reduction and voltage generation in the 8th node position with the amount of 100 pieces of piezoelectric, which succeed for reducing translational, rolling, and pitching direction up to 79.8%; 76.1%; and 79.69% respectively.