Pilot control unit for at least one valve drive of a hydraulic valve and method for operating same
AssigneeBucher Hydraulics AG
InventorsGerd Salah, Steffen Hartmann
Life of this patent
Estimating the term…
Abstract
A pilot control unit is for at least one valve drive of a hydraulic valve with a valve slide. The valve slide can be adjusted by the valve drive, in order to supply hydraulic lines with hydraulic fluid through the hydraulic valve. The pilot control unit is set up to supply electronics and a power end stage for actuating an electrical actuator of the valve drive with electrical energy and operating commands and there is a parametrization module in the pilot control unit for this purpose, in which operating parameters for the operation of the at least one hydraulic valve by the valve drive thereof are stored.
Claims12
A pilot control unit for at least one valve drive of a hydraulic valve with a valve slide,
- wherein the valve slide can be adjusted by the at least one valve drive, in order to supply hydraulic lines with hydraulic fluid through the hydraulic valve,
- wherein the pilot control unit is set up to supply electronics and a power end stage for actuating an electrical actuator of the at least one valve drive with electrical energy and operating commands via a parametrization module in the pilot control unit, in which operating parameters for operation of the at least one hydraulic valve by the at least one valve drive thereof are stored,
- wherein the pilot control unit has a control and an electrical energy store,
- wherein the electrical energy store is set up so that the valve slide is moved by the at least one valve drive and energy stored in the electrical energy store from any possible valve slide position into a cutout position,
- wherein the control is configured as an emergency control and the electrical energy store as an emergency power supply and they are set up to supply electrical energy for at least one emergency cutout, when a fault is detected in an external power supply of the hydraulic valve, and
- wherein the emergency cutout is set up to move the valve slide from any possible valve slide position into the cutout position.
A method of operating a valve drive for a hydraulic valve, comprising:
- receiving, at the valve drive receives via a bidirectional data transmission, operating commands from a pilot control unit,
- wherein the pilot control unit is configured as a separate unit apart from the valve drive;
- and
- sending, by the valve drive via the bidirectional data transmission, actual values of the hydraulic valve back to the pilot control unit,
- wherein the pilot control unit contains operating parameters stored in a parametrization module for the valve drive and the hydraulic valve;
- and
- wherein the operating parameters are used by the pilot control unit along with the actual values and external inputs to generate the operating commands.
A computer program product having a non-transitory computer readable medium that stores commands which, when executed by processing circuitry, cause the processing circuitry to perform a method of operating a valve drive of a hydraulic valve, the method comprising:
- receiving, at the valve drive via a bidirectional data transmission, operating commands from a pilot control unit,
- wherein the pilot control unit is configured as a separate unit apart from the valve drive;
- and
- sending, by the valve drive via the bidirectional data transmission, actual values of the hydraulic valve back to the pilot control unit,
- wherein the pilot control unit contains operating parameters stored in a parametrization module for the valve drive and the hydraulic valve;
- and
- wherein the operating parameters are used by the pilot control unit along with the actual values and external inputs to generate the operating commands.
Dependencies are inferred from the claim text.