Linear-turn Electric Actuator
1. The control valve is simple to control and intrinsically safe. No additional explosion-proof measures are required.
2. The servo amplifier adopts deep dynamic negative feedback, which can improve the accuracy of automatic adjustment.
3. The fluid acts on the valve core in all directions, so the valve can work stably.
4. All movable surfaces use high-quality bearings with low friction, long life and no noise.
5. The control valve has superb technology, superior structure, smooth flow, quick response, and can replace imported goods.
6. The pressure drop loss of the regulating valve is small, the output force is stable, the flow coefficient is large, and the smooth cross-sections of the channels are equal.
7. The control valve adopts a pressure balance mechanism inside the valve, which makes the control valve responsive, precise in control, and allows a large pressure difference.
8. The control valve body is designed according to the principle of fluid mechanics with a low-flow resistance passage of equal cross-section, and the rated flow coefficient is increased by 30%.
9. The control valve has the characteristics of small size, light weight, easy to use, large flow, energy saving, and high adjustment accuracy.
Technical data
Power AC220V + 10%50HZ (380, 110V, etc. can be customized)
Consumption Type A: 50W Type B: 150W Type C: 220W Type D: 300W
Input signal DC4-20mA or DC1-5V
Output signal DC4-20mA (load resistance less than 500ohm)
Control accuracy Error: ≤0.8% Reurn difference: ≤1% Dead zone: ≤1%
Angle adjustment range Zero position: ±25%; Travel: 20%-100%
Support multiple languages
Simple operation and easy to use
The display window supports simplified Chinese/traditional Chinese/ English and other languages
Faults and Solutions
No action, power light off
Connect the power supply
The motor does not start, the power light is on, and the input signal light is on.
Check the voltage to make sure it is normal. Set the input signal selection switch to the correct position, lower the ambient temperature, reduce the frequency and sensitivity of use, or replace the capacitor, replace the wire, or connect the wire and the corresponding plug.
Motor oscillation, heat
Check the input signal to eliminate interference, adjust the sensitivity, use the potentiometer to reduce the sensitivity, and check to make it normal.
No valve position feedback signal
Check valve position feedback signal line
The valve position feedback signal is too large or too small
Check the potentiometer installation and adjust the zero position and travel potentiometer
If the limit adjustment of the output shaft is improper (the limit switch acts too early), it will affect the stroke adjustment. Therefore, before the output shaft is adjusted, in order to prevent the limit switch from acting too early, the fixing screw on the limit cam should be loosened to delay the action of the limit switch.
When the status switch is set to the "positive action state", (that is, as the input signal decreases, the output shaft moves upward), the input signal is slowly reduced. When the input signal is in the range of 3.7mA~3.95mA, adjust and tighten the outer limit cam to make the limit switch act and the output shaft stop moving upward. When the status switch is set to the "reverse action state", (that is, as the input signal increases, the output shaft moves upward), the input signal is slowly increased. When the input signal is in the range of 20.2mA~20.5mA, adjust and tighten the outer limit cam to make the limit switch act and the output shaft stop moving upward.
Faults and Solutions
Complete range
Complete range of product specifications You can always find the one that suits you
Strong and sturdy
Good product quality, strong antioxidant properties and durability
Meticulous workmanship
Smooth workmanship and fine surface grinding without burrs
Valve internal component materials
Main methods of hardening treatment
Commonly used valve internal component materials are SUS304, SUS316, SUS316L, SUS410, SUS420, etc., and are processed accordingly according to different fluid conditions. For controlling cavitation fluids, fluids containing solid particles, and high-temperature and high-pressure situations, they must be hardened. treatment to extend the service life of the valve.
Heat treatment
a.304/316 solid solution treatment
This series of materials is austenitic stainless steel and is mainly used in working conditions where the medium is corrosive or in low-temperature situations. When the medium is highly corrosive, solution treatment must be carried out. The purpose of solution treatment is to improve the hardness and corrosion resistance of the material. Temperature range -196~530°C
b.410/420 quenching and tempering treatment (quenching + tempering) The material of this series is martensitic stainless steel, which is an excellent cavitation-resistant material. It must be quenched and tempered when used in high-temperature and high-pressure difference situations. The purpose of quenching and tempering treatment is to greatly improve the hardness of the material and extend its service life under harsh working conditions. Temperature range -45~425°C
c.17-4PH precipitation hardening treatment Different types and quantities of strengthening elements are added to the chemical composition of stainless steel, and different types and quantities of carbides, nitrides, carbides and intermetallic compounds are precipitated through the precipitation hardening process, which not only improves the strength of the steel but maintains sufficient toughness. A type of high-strength stainless steel, referred to as precipitation hardening. Temperature range -45~425°C
Surface hardening treatment
Surface heat treatment is divided into two categories: surface quenching and surface chemical heat treatment. a. Flame heating surface quenching, contact electric heating surface quenching, induction heating surface quenching, etc. b. Carburizing, nitriding, carbonitriding, chromium boronizing, copper infiltrating, etc.
Surfacing treatment
Stellite cladding (main components Co, Cr, W) is a commonly used hardening treatment method with excellent corrosion resistance. There are two methods of Stellite surfacing: full surfacing and partial surfacing. There is no standard regulation for the specific surfacing method. It usually depends on the different pressures and temperatures of the fluid and whether the fluid contains particles. The types of surfacing welding are as follows:
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