Special two-stage proportional direction valve with electrical position feedback and integrated electronic (OBE) control for flow and size proportional solenoid valve operation for baseplate mounting: Port mode spring-centered main control spool according to ISO 4401 electrical position feedback Pilot control valve: single-stage proportional direction valve main stage with position control
Pilot control valve is a direct operating proportional valve. The geometry of the control edge has been optimized to be used as a pilot control valve for the type 4WRKE proportional directional valve. The proportional solenoid valve is provided with a detachable coil
Pressure resistant, wet needle DC solenoid valve. They convert electrical current proportionally into mechanical force. The increase in current results in a correspondingly higher solenoid force. The set solenoid valve force will remain unchanged throughout the control stroke.
The pilot control valve is mainly composed of a housing (1), a proportional solenoid valve (2 and 3), a valve control slide valve (4) and a spring (5 and 6). In the non-actuated state, both actuators are connected to the fuel tank. If two solenoid valves (2
Or 3) one of them is excited and the magnetic force moves the valve control spool (4) towards the spring (5 or 6). After overcoming the overlap area, the connection between one of the two actuators and the tank is blocked and connected to the pressure chamber
The connection is established. There is flow from P to the main control room.
4WRKE valve is a two-stage proportional directional valve. They control flow and size. The main stage is position-controlled, so in the case of large flow, the position of the control spool is not affected by the flow force.
These valves are mainly composed of a pilot control valve (1), a housing (8), a main control spore (7), a cover (5 and 6), a centering spring (4), an inductive position sensor (9) and a pressure reducing valve (3). If there is no input signal, Lord
The control spool (7) will be held in the middle position by the centering spring (4). Both control chambers in the cover (5 and 6) are connected to the fuel tank via a valve control slide valve (2). Main control spool (7) via inductive position sensor (9)
Connect to appropriate control electronics. A change in the position of the main control slide valve (7) and a change in the control value of the amplifier summation point produce a voltage difference. In the process of comparing the control value with the actual value, pass the electron
The device determines possible control deviations and provides current to the proportional solenoid valve of the pilot control valve (1). The current induces a force in the solenoid that controls the spool through the -row plunger operation. By control
Cross section activation of flow results in adjustment of the main control spool. The main control spool (7) connected to the inductive position sensor (9) core is moved until the actual value is consistent with the control value. In a controlled state, control
The spool (7) is in force balance and maintained in the controlled position. The control spool stroke and the control opening are proportional to the control value. Control electronics are integrated in the valve [gate] by adjusting the valve and electricity
The deviation in the production of sub-equipment and equipment series is kept low.
Do not let the tank pipeline run empty; Under the appropriate installation conditions, the preload valve (preload pressure excitation is about. 2 bar) must be installed.
