When the SMC electrical proportional valve ITV series malfunctions, please confirm with the following appropriate items. When encountering the use of the environment, electrical proportional valve may fail, please contact us through other channels.
First, set pressure instability when pressure changes
Is the amplitude below ±0.2%FS?
A: Normal product
The pressure stability of this product is controlled below ±0.2% FS
Have you used a clean air source?
Answer: Please refer to fault No. 1 in the following fault correspondence table.
Is the air consumption of the ITV's export pressure side (pipeline, etc.) positive?
A: Please prevent air leaks in pipes and other places.
Is the command signal stable? (including the effect of interference)
Answer: Please confirm the input signal from the external control device again.
Is the supply pressure normal?
A: Please ensure that the supply pressure ≥ set pressure + 0.1MPa
Gain-sensitivity manual adjustment method when you encounter a fault?
When the SMC electrical proportional valve ITV series malfunctions, please confirm with the following appropriate items. When encountering the use of the environment, electrical proportional valve may fail, please contact us through other channels. .
The ITV1000, 2000, 3000 series is equipped with manual settings for gain and sensitivity. In normal use, the gain and sensitivity are already set at the factory, and there is no need to set specifically. However, when the set outlet pressure oscillates, the gain and sensitivity are adjusted to the optimum value so as to obtain a stable outlet pressure as much as possible.
Fault correspondence table
ITV0000 ITV1000 ITV2000 ITV3000
No load 0.1s or less 0.2-0.3s 0.2-0.3s 0.3-0.4s
Load 1 litre - 0.3-0.5s 0.3-0.5s 0.4-0.6s
SMC Electric Proportional Valve Faults and Treatments:
1. Without using a clean air source, impurities in the air may be mixed in
In this product. According to the maintenance workbook, please replace the solenoid valve assembly and the main assembly promptly. (ITV1000, 2000, 3000) Install an air filter with a filtration accuracy of 5 μm on the pressure supply side of this product. Please do air filter maintenance regularly. When piping work, please clean and inflate the piping material.
2. When there is an orifice factor on the pressure supply side, pressure output side or exhaust side, the response of this product becomes slower.
When installing the muffler at the exhaust port, please confirm whether the muffler is clogged
.
3. There is a terminal connector at the top of this product. Please confirm if there are any four terminal pins damaged. If it is damaged, replace the housing components. In addition, an alignment protrusion is provided at an angle of 45° diagonally below the terminal head.
4. When the outlet side is used for large gas consumption such as blowing, the actual output pressure may be affected by the pressure drop due to the different measurement positions. Since the LED indicator indicates the pressure value near the OUT port, the LED indicator value may differ from the actual outlet pressure value.
5. The analog output current type is passive. Refer to the correct wiring method in the instruction manual. If you need an active type, you can use it as a special injection product. Please contact our technicians.
SMC electrical proportional valve ITV typical problem set?
For the problems that frequently arise in the ITV series of electrical proportional valves, refer to the following description.
ITV0000 Series
Q1. What is the red LED on the top of this product?
A1. Indicates power on/off (ON/OFF). Turns on when the lamp is on and turns off when the lamp is off.
When the command signal exceeds the rated range, the red LED flashes. Please turn off the power at this time and confirm that
After the command signal is adjusted to the rated range, turn the power on again to eliminate the abnormality.
Q2. How to adjust ZERO/SPAN?
A2. This product cannot perform ZERO/SPAN adjustment.
Q3. What is the role of the small holes in the OUT caliber?
A3. The inner breathing hole of this product communicates with the atmosphere. Do not block.
Q4. I want to install this product on a DIN type mounting bracket.
A4. For a single installation, the above installation can be achieved by purchasing the following accessories
Q5. I want to use Φ6 piping.
A5. The product itself cannot correspond. Please purchase the necessary fittings separately.
Q6. When the product is not working properly, you want to disassemble it.
A6. Do not perform the above operations because the disassembly and disassembly may cause product failure. If this product malfunctions, please contact us.
ITV1000,2000,3000 series
Q1. How to adjust ZERO/SPAN?
A1. Please refer to the instruction manual for confirmation. Adjustments can be made by setting F1, F2 in "Setting Method".
Q2. What is the function of the M5 hole in the front of the product (ITV1000 is M3)?
A2. Solenoid valve exhaust vented from inside the product. Do not block.
Q3. It is desirable to use a Manifold.
A3. The multi-baffle deflector can correspond to special injection products. Please refer to the company's related product catalog.
Q4. Is there a two-wire system with input 4-20mA similar to the IT series?
A4. ITV series must have power supply. Please prepare another 12 to 15VDC or 24VDC±10% power supply.
Q5. The model of the purchased ITV product is incorrect. Can it be changed?
A5. Please contact the company in the above situation to respond to the repair.
Q6. Can you change the pressure indication unit?
A6. The above situation requires the company's specialized equipment. Please contact us for repairs.
Q7. The pressure on the outlet has been exceeded. Can I eliminate overshoots?
A7. By adjusting the gain, overshoot can be suppressed. Refer to "gain/sensitivity adjustment method" in this manual.
Q8. You want to turn the LED indication on the front of this product 90° or 180°.
A8. In the above cases, you can use the special injection method. Please contact us.
Q9. When the pressure is set, the power is cut off due to a power failure. How does the pressure change at this time?
A9. In case of the above situation, the outlet pressure of this product can remain unchanged temporarily, but due to the slight leakage of the product itself,
Export pressure was slowly removed and discharged to the atmosphere. Also, there is an individual difference due to the small amount of leakage of the product itself.
No, there are differences in the duration of stress.
Q10. Is there any restriction on the installation direction?
A10. There are no special requirements.
Q11. What is the response time of the outlet pressure when the command signal changes?
A11. It varies according to the customer's actual equipment, piping conditions, and conditions of use. The company has reference data,
Please contact if necessary. Please refer to the representative data shown in Table 3.
Q12. For long-distance operation, you can dismiss longer power signal lines.
A12. Yes. However, due to the need to consider external electromagnetic interference and voltage drop, the company's recommended length of use is 10m
The following power signal line (standard product is 3m), the product is: straight insert type TM-4DSX*HG4, right-curved type
TM-4DLX*HG4 (* refers to the length of the power signal line in meters).
Q13. What kind of grease is used in this product?
A13. Silicon Grease. The ITV1000 Series does not use grease in contact with fluids.
Q14. What kind of rubber is used in this product?
A14. NBR. In addition, for the ozone environment, our company is equipped with [80-] series rubber products using fluorine rubber FKM.
Q15. Can you provide products that prohibit oil specifications?
A15. Products that are not completely oil-free. If only the fluid contact part is required to be lubricated without grease, ITV1000 series
Can respond.
Q16. The LED indicates an abnormal value.
A16. Please refer to the error message listed in the instruction manual. Also, [GL,SL] represents "gain/sensitivity adjustment"
Adjustment function. The adjustment method is described in this book. When the button is operated, due to an error or LED indication
If there is a difference, turn off the power and operate again from the initial state.
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