Procedure to stop a hydraulic pump with adjustable rotation speed in a hydraulic installation and hydraulic pump controller

摘要

Procedure for stopping a hydraulic pump (2) with adjustable rotation speed in a preset hydraulic installation at a set pressure (PC), comprising the steps of: - comparing (A) the fluid pressure (p) of the installation with the set pressure (Pc) of the installation and vary (B) the rotation speed of said pump to match the pressure of the installation to the preset set pressure; - check (C) if the feed frequency (f) of said pump decreases below a predetermined stop feed frequency (fSTOP) and if so, stop (D) the pump until the installation pressure drops (E ) below the setpoint pressure characterized in that the stop feed frequency (fSTOP) of the pump is determined automatically by means of calculation connected to the pump by means of the expression: ** Formula ** from the maximum pressure of pumping (HMAX) of the pump and the feed frequency at maximum rotation speed (fMAX), intrinsic to the pump.