High frequency servo valve 4WRTE16R3-200S-4X/6EG24K31/A1M

High frequency servo valve 4WRTE16R3-200S-4X/6EG24K31/A1M

Input a current command signal to the line of the torque motor will generate an electromagnetic force on both ends of the armature, which will drive the baffle in the spring tube to deflect. The deflection of the baffle will reduce the flow rate of a certain nozzle, thereby changing the pressure on one side of the valve core connected to this nozzle, pushing the main valve core to move towards one side.

The displacement of the valve core opened a channel between the oil supply port and a control port, communicating with another oneA channel between the control oil port and the return oil port. At the same time, the displacement of the valve core also exerts a force on the spring rod, which forms a restoring torque on the armature baffle assembly. When this restoring torque is combined with the electromagnetic force of the torque motor acting on the armature baffle When the moment phase is in equilibrium, the baffle returns to zero position, and the main valve core remains in the open position of this equilibrium state until the given input signal changes.

In summary, the displacement of the valve core is directly proportional to the magnitude of the input current signal, under constant valve conditionsUnder pressure drop, the load flow through the valve is proportional to the displacement of the valve core.

Function of servo valve: to control the low-power electrical signal input to the systemTransforming into the movement of the valve core, which in turn controls the pressure energy (pressure and flow) flowing to the hydraulic actuator, achieving the conversion and amplification of electro-hydraulic signals and precise control of the hydraulic actuator. Servo valve is the core component of electro-hydraulic servo system.

The characteristics of servo valves: servo valves organically combine precision machinery and electricitySub technology and hydraulic technology; It has the characteristics of high control accuracy, fast response, small size, compact structure, high power amplification factor, good linearity, small dead zone, high sensitivity, and high dynamic performance. It has been widely applied in various hydraulic servo systems.

High frequency servo valve 4WRTE16R3-200S-4X/6EG24K31/A1M

4WRE6E16-2X/G24K4/V

4WRPFH10C3-B100L-2X/G24K0/F1M

4WREE6V08-22/G24K31/A1V

4WRZ10E85-5X/6A24NEZ5L/M

4WRTE16-V1-125L-4X/6EG24EK31/F1M

4WRZ16W6150-70/6EG24N9ETK4/M

4WRZE16W6-100-7X/6EG24N9ETK31/F1D3M

4WREE6V16-2X/G24K31/A1V

4WRAE6E15-22/G24N9K31/A/V

4WRA6W1-30-2X/G24N9K4/V

4WRA6V30-22/G24N9K4/V

4WRDE10V100L-5X/6L24K9/M

4WRKE10W8-100L-3X/6EG24ETK31/F1D3M

4WRKE25E1-350L-31/6EG24EK31/A5D3M

4WREE10E-75-22/G24K31/A1V

4WRZ16W8-150-7X/6EG24N9K4/D3M

4WRKE10E100L-3X/6EG24ETK31/F1D3M

4WRZ10W8-85-70/6EG24N9ETK4/D3M

4WRZ32W8-520-7X/6EG24N9K4/D3M

4WRZE16W6-150-7X/6EG24N9ETK31/A1D3M

4WRTE10V1-100L-4X/6EG24ETK31A5M

4WRAE6E30-2X/G24K31/A1V

4WRZ32W8-520-7X/6EG24N9ETK4/D3M+Z4

4WRZ16W6-150-7X/6EG24N9ETK4/M

4WRZ25W6-220-7X/6EG24N9ETK4/D3M

4WRA6W30-2X/G24K4/V

4WRA6E30-22/G24N9K4/V

4WRZ10W8-50-7X/6EG24N9ETK4/M+Z4

4WRZ25W8-325-7X/6EG24N9TK4/D3M+Z4

4WREE10W3-75-2X/G24K31/F1V

4WREE10W1-25-2X/G24K31/F1/V

4WRKE25-W6-350L-3X/6EG24EK31/F1-D3M

4WRZE25W8-220-7X/6EG24N9ETK31/F1D3V

4WRZ10W6-25-7X/6EG24N9ETK4/D3M

4WRPH10C4B100L-2X/G24Z4/M

4WRDE16V1-200P-52/6L24K9/WG152VR

Malfunctions, causes, and troubleshooting of servo valves

The malfunction of servo valves is often discovered during the debugging or abnormal operation of electro-hydraulic servo systems. So sometimes it's a system problem here, including faults in amplifiers, feedback mechanisms, actuators, etc., and sometimes it's really a servo valve problem. So first, it is necessary to clarify whether it is a system issue or a servo valve issue. The common way to solve this problem is:

1、 If possible, remove the valve and retest it on the experimental bench.

2、 In most cases, there is no such condition. In this case, a simple solution is to open the system loop, backup an independent DC power supply, and supply positive and negative current values to the servo valve through a multimeter. The output of the valve can be used to determine whether there is a problem with the valve and what the problem is. If the problem is not significant, then look for system issues, such as excessive internal leakage of the actuator, which can cause the system to slow down, have serious hysteresis, or even fail to work; Feedback signal disconnection or malfunction, amplifier problems such as output signal distortion or non operation, system issues are not discussed here. The following mainly discusses valve faults.

(1) Valve not working

The reasons are: motor coil breakage and desoldering; There are also oil inlet and outlet connections that are reversed. It is also possible that the pre stage is blocked, causing the valve core to get stuck in the middle dead zone position. Of course, the probability of the valve core getting stuck in the middle position is relatively low. The motor coils are connected in series or parallel, and if the two coils are reversed, the magnetic force formed by the two coils is exactly offset.

(2) The valve has a fixed output, but it has lost control

Reason: The pre stage nozzle is blocked, the valve core is stuck by dirt and the valve body is deformed, causing the valve core to get stuck, or the internal protective filter is blocked by dirt. To replace the filter element, return to the factory for cleaning and repair.

(3) Slow valve response, slow response, etc

Reason: There is a decrease in system oil supply pressure, local blockage of the protective filter, loosening of some valve zero adjustment mechanisms, loosening of other parts of the motor, or loosening between the moving coil of the moving coil valve and the control valve core. Excessive internal leakage of power components in the system is another reason. In addition, the oil is too dirty, the valve resolution deteriorates, and the hysteresis widening is also one of the reasons.

(4) The system experiences high-frequency vibrations and noise

Reason: Excessive amount of air mixed into the oil, resulting in dirty oil; The system gain is set too high, causing power noise from the amplifier, poor insulation between the servo valve coil, valve housing, and ground wire, resulting in non communication, excessive vibration signals, or resonance phenomena caused by the relationship with the system frequency. In addition, a servo valve with a relatively low frequency is selected.

(5) The valve output fluctuates between positive and negative, and cannot be continuously controlled, forming a "switch" control.

Reason: The feedback mechanism inside the servo valve has failed, or the system feedback has been disconnected, otherwise there may be some positive feedback phenomenon.

(6) Oil leakage

Reason: Poor surface processing quality of the installation seat and inability to seal properly. There is a quality issue with the valve port sealing ring, and the sealing ring at the top of the valve plug is damaged. If there is oil leakage between the motor cover and the valve body, it may be due to the rupture of the spring tube, internal oil pipe, etc.

Troubleshooting of servo valves can be done by oneself, but many faults require the valve to be sent to the production plant for repair and debugging on the experimental bench. Once again, it is important not to disassemble the valve yourself as it can easily damage the servo valve components.

Units that use a large number of servo valves can install a simple experimental platform to determine whether it is a system problem or a valve problem. What is the problem with the valve and can it be reused.

Part Number

4WRKE25W8-220L-3X/6EG24EK31/F1D3M

5WRZ52-W8-1000-7X/6EG24N9K4/D3M

4WRZE32W8-520-7X/6EG24N9K31/A1D3V+ 插头

4WRZ16W8-150-7X/6EG24N9ETK4/D3V

4WRPEH6C4B12L-2X/G24K0/F1M

4WRZE16W8-150-7X/6EG24N9ETK31/F1D3M

4WRZ10W1-50-5X/6A24N9ETZ4/M

4WRZ10W6-85-70/6EG24N9ETK4/D3M

4WRPH6C4B24L-2X/G24Z4/M

4WREE6V16－20/G24K31/A1V

4WRZE25W6-325-70/6EG24N9EK31/F1M

4WREE10E75-2X/G24K31/A1V

4WS2EM10-5X/75B11ET315K31EV

4WRZ16E1-150-5X/6A24Z4/D3M

4WRKE35W6-1000L-3X/6EG24ETK31/A1D3M

4WRDE-25-V-220-L-5X/6L-24-K9/M-R576

4WRZE25W6-325-7X/6EG24ETK31/A1D3M

4 wrse 10 Q 00 - 32 / g 24 K 24 Ko / a 1 v- 588 = de

4WRA6W15-2X/G24N9K4/V 插头Z4

4WRZE16W6-100-7X/6EG24N9ETK31/A1D3M

4WRE6W08-2X/G24K4/V

4WRKE27-W6-500L-3X/6EG24EK31/F1-D3M

4WRZE32W8-520-7X/6EG24N9K31/A1M

4WRZ32W1-520-5X/6A24N9ETZ4D3M

4WRTE32E1-600L-4X/6EG24K31/A1WB15M

4WRZE32W8-520-7X/6EG24N9EK31/F1M

4WRA10W1-60-2X/G24K4/V

4WSE3EE-16-1X/200-B-8-315-K9-D-V-SO122

4WREE6E16-2X/G24K31/A1V

4WREE6W32-2X/G24K31/F1V

4WRZ10E85-7X/6EG24N9EK4+Z5L

4WRZ10W6-85-7X/6EG24N9ETK4/D3M+Z4

4WRZ25W6-220-7X/6EG24N9K4/D3M+Z4

4WRZE25W8-220-7X/6EG24N9K31/A1D3V+ 插头

4WRKE16W6-125L-3X/6EG24K31/F1D3M

4WRA10E40-12/24NZ4/M

4WREE10V75-22/G24K31/A1V

4WRZ32W6-520-7X/6EG24N9K4/D3M

4WRZE10W8-50-7X/6EG24N9ETK31/F1D3M

4WRZE25E325-7X/6EG24N9EK31/F1M

4WRSE10V1-80-3X/G24K0/A1V

4WRZE25W8-220-7X/6EG24N9EK31/F1D3M

4WRE10W75-2X/G24K4/V+Z4

The product portfolio includes proportional directional valves, proportional pressure valves, proportional flow valves, high-frequency response valves, servo valves, and valve accessories. The products can reduce the need for wiring, simplify processing procedures, and achieve accurate reproducibility and low manufacturing tolerances through integrated electronic components (OBE).

Proportional valves can be used as direct acting or pilot operated valves with or without integrated electronic components (OBE), reducing wiring work and simplifying processing procedures by using integrated electronic components, making this valve an ideal choice for many closed-loop applications.

How to install a proportional valve? I believe many people have questions, today Shanghai Weimi Electromechanical will answer them with everyone!

Before installing the valve into the system, the model description of the valve should be compared with the ordered model.

1. Cleaning

When installing a proportional valve, ensure that the valve and the clean oil tank in the area to be installed are sealed to prevent external contamination. Only non-woven fabric or special paper can be used for cleaning;

2. When installing the valve

Confirm that there is no moisture or oil on the installation surface and bottom plate. If there is oil on the connection surface, it is inevitable to tighten the fixing screws manually without using power tools. When there are more than 4 screws, pay attention to tightening the middle screw first to ensure that the sealing ring and valve connection surface are properly sealed;

3. Installation location

The best position is horizontal. If the proportional valve is installed on the actuator, the position of the valve core should be avoided from being parallel to the acceleration direction of the actuator;

4. Electrical connection

Please refer to the relevant sample for special protection forms for electrical connections, and special measures are required as described in the relevant sample.