Improvement of the control algorithm for the VFD-IM system of the plate movement mechanism in the FKM-500 filter press

Load moments on the electric drive of the plate movement mechanism in the FKM-500 filter press are accompanied by significant mechanical forces, which consist of static and variable components of a stochastic nature. An analysis of emergency situations identified factors influencing the formation of such incidents. To improve the performance of the automated electric drive system during technological operations, an analysis of the tuning possibilities for the ACS580 frequency converter parameters was conducted. Using the capabilities of the frequency converter, the operation algorithm of the electric drive system was improved to ensure the fault-free execution of technological operations during atypical operating modes. This was achieved by introducing an additional subroutine into the algorithm with new frequency converter settings for stepwise movement of the filter press plates. The frequency converter has a set of parameters identified as priority for device parameterization to ensure fault-free execution of dynamic modes during plate movement along the guides under increased resistance torque. An algorithm for the automated electric drive system was developed based on the ACS580 frequency converter, considering the nature of load variations during technological operations and atypical operating modes of the mechanism. The algorithm consists of two components. The first component ensures the execution of the typical technological process, with the frequency converter parameters configured according to the requirements for the electric drive system for this mode. The second component, newly developed, includes a subroutine that performs controlled stepwise torque increases of the motor to overcome sticking, if necessary, and to prevent misalignment of the sides of the moving plate. The algorithm, utilizing appropriate frequency converter settings in real time, ensures the execution of the technological operation with specified working mode parameters of the electric drive system. As a result, the occurrence of emergency modes is reduced