SMC Networks VXF2 Series User manual

Doc. No. VXF****-OMQ0002-A
PRODUCT NAME
2 PORT SOLENOID VALVE
FOR DUST COLLECTOR
MODEL / Series / Product Number
Series VXF(A)2
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Contents
1. Contents --------------------------------------------------------------- P1
2. Safety Instructions -------------------------------------------------- P2
3. Safety InstructionsOutline ---------------------------------------- P8
4. Specifications -------------------------------------------------------- P8
5. Operation Principle ------------------------------------------------- P9
6. Trouble shooting ---------------------------------------------------- P10
7. Disassembly / Assembly Procedure --------------------------- P11
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Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.”
They are all important notes for safety and must be followed in addition to International Standards
(ISO/IEC)*1) , and other safety regulations.
*1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
ISO 4413: Hydraulic fluid power -- General rules relating to systems.
IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements)
ISO 10218-1992: Manipulating industrial robots -Safety.
etc.
Caution
Caution indicates a hazard with a low level of risk which, if not avoided, could result
in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk which, if not avoided, could
result in death or serious injury.
Danger
Danger indicates a hazard with a high level of risk which, if not avoided, will result
in death or serious injury.
Warning
1. The compatibility of the product is the responsibility of the person who designs the equipment or
decides its specifications.
Since the product specified here is used under various operating conditions, its compatibility with specific
equipment must be decided by the person who designs the equipment or decides its specifications based on
necessary analysis and test results.
The expected performance and safety assurance of the equipment will be the responsibility of the person who
has determined its compatibility with the product.
This person should also continuously review all specifications of the product referring to its latest catalog
information, with a view to giving due consideration to any possibility of equipment failure when configuring the
equipment.
2. Only personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment including our products must be performed
by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed.
1.The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed.
2.When the product is to be removed, confirm that the safety measures as mentioned above are implemented
and the power from any appropriate source is cut, and read and understand the specific product precautions
of all relevant products carefully.
3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the product is to
be used in any of the following conditions.
1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to
direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or
other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special safety
analysis.
4.Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a
mechanical protective function, and periodical checks to confirm proper operation.
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Safety Instructions
Caution
1.The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and exchange specifications
or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements
The product used is subject to the following “Limited warranty and Disclaimer” and “Compliance
Requirements”.
Read and accept them before using the product.
Limited warranty and Disclaimer
1.The warranty period of the product is 1 year in service or 1.5 years after the product is
delivered,whichever is first.2)
Also, the product may have specified durability, running distance or replacement parts.
Pleaseconsult your nearest sales branch.
2.For any failure or damage reported within the warranty period which is clearly our
responsibility, a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any other damage
incurred due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms and disclaimers
noted in the specified catalog for the particular products.
2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum
pad or failure due to the deterioration of rubber material are not covered by the limited
warranty.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of weapons of mass
destruction(WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are govemed by the
relevant security laws and regulation of the countries involved in the transaction. Prior to the
shipment of a SMC product to another country, assure that all local rules goveming that export
are known and followed.
Caution
SMC products are not intended for use as instruments for legal metrology.
Measurement instruments that SMC manufactures or sells have not been qualified by type approval
tests relevant to the metrology (measurement) laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the metrology
(measurement) laws of each country.
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Design
！ Warning
1. Extended periods of continuous energization
-This product is the pulse operation type,so continuous energization can cause failure.
1.The pulse energization time (ON time) should be 300ms or less.
2. Not applicable as a explosion proof solenoid valve
3. Ensure sufficient space for maintenance activities
Allow sufficient space for maintenance and inspection.
4. Ensure sufficient capacity of header tank
The valve has high flow rate, so if header tank capacity is small, pressure drop during operation might
be large, and the valve may oscillate due to insufficient pressure differential.
The pressure drop of the header tank per one pulse operation should be 0.1MPa or less as a guide.
Selection
！Warning
1. Quality of operating air
(1) Use clean air.
1) Piping sealing material, rust or debris entering the valve can result in a shorter valve life
or malfunction in the early stages of operation.
2) If corrosive gas enters the valve, malfunction may occur due to corrosion and
deterioration of the valve.
(2) Installation of air filter
Contaminated compressor oil and high moisture content can lead to performance
deterioration of the valve. Install the filter with auto drain (filtrarion 5µ m or less) to the
system where the compressed air is cooled.
For detailed information regarding the quality of the compressed air described above, refer
to "SMC's Cleaning Systems".
2. Ambient environment
Operate within the operating ambient temperature range(5~60℃).
3. Install the regulator and restrictor
If a regulator, or a restrictor, is installed immediately before the IN port or immediately
after the OUT port of the valve, the main valve may oscillate.
Install them away from the valve or select the regulator or restrictor with higher flow rate.
4. Selection of pilot solenoid valve
The orifice diameter of the pilot solenoid valve which controls the air operated
valve(VXFA) should be φ4.5 or more.
5. Selection of piping for pilot solenoid valve
The terminal diameter(I.D) of the piping between the air operated valve(VXFA) and pilot
solenoid valve should be φ6 or more.
The longer the piping length, the slower the response will be.
！ Caution
1. Leakage current
If there is leakage current, valve may not turn off.
The leakage current should be 5% or less (AC coil) or 2% or less (DC coil) of the rated voltage.
2. Use in low temperature environments
Protection against freezing or solidification of impurities etc. When heating the valve body and
piping by a heater, etc., be careful not to heat the coil with the heater.
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Connection thread Aprropriate tightening torque(Nm)
Rc 1/4 8 to 12
Rc 3/8 15 to 20
Rc 1/2 20 to 25
Rc 3/4 28 to 30
Rc 1 36 to 38
Rc 1・1/2 40 to 42
Rc 2
Rc 2・1/2
Rc 3
48 to 50
Installation
！ Warning
1. If air leakage increases or the equipment does not operate properly, stop operation.
After installing, supply compressed aie or electricity to the product and perform appropriate
functional inspections to check it is mounted properly.
2. Do not apply external force to the coil section.
3. Do not place the coil downward.
If the coil is installed downward, foreign matter in the fluid may stick to the armature, causing
malfunction.
4. Do not keep the coil assembly warm using a heat insulating material.
A tape heater to prevent freezing should be limited only to the piping and body. This can cause
the coil to burn out.
5. If the product is installed close to a vibration source, the distance from the body should be
as short as possible to prevent resonance.
6. Operation Manual
Install only after reading the operation manual carefully and understanding the contents. Keep
the manual where it can be referred to as necessary.
7. Painting and coating
Do not erase or paint out the product number which is printed or attached to the product.
Piping
！ Caution
1. Preparation before piping
Before piping, perform air blow (flushing) or cleaning to remove any cutting chips, cutting oil, dust,
etc. from the piping. Connect piping so that force such as tension, compression or bending is not
applied to the valve body.
2. Wrapping of pipe tape
When screwing piping or fittings into ports, ensure that chips from
the pipe threads or sealing material do not enter the piping.
If a sealant tape is used, leave 1.5 to 2 threads exposed at
the end of threads.
3. Avoid connection of ground lines to pipipng, as this may cause electric corrosion of the system.
4. Tighten thread with the proper tightening torque.
When screwing fittings into valves, tighten with the proper tightening torque as shown below.
Tightening torque for piping
5. Piping to products
When connecting piping to the product, avoid mistakes regarding the supply port, etc.
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Terminal no. 1 2
DINterminal +(-) -(+)
Wiring
！ Caution
1. Wire
Use electric wires with a conduction area of 0.5 to 1.25mm2for wiring.
Make sure that no excessive force is applied to the wires.
2. Adopt an electric circuit without chattering at the contacts.
3. Keep the voltage within -10 to +10% of the rated voltage.
The voltage drop is measured at the lead wire with the coil connected.
If there is voltage drop, the valve response may decrease.
4. If no solenoid surge is allowed in the electric circuit system, mount a surge absorber and
the solenoid in parallel.
Electrical Connection
！ Caution
Conduit terminal
The conduit terminal should be wired as indicated by the marks on the figure below.
－Tighten each part to the following torque.
－Seal the piping (G1/2) firmly, using a specific electric wire tube.
DIN terminal (B only)
The DIN terminal is wired internally as shown below. Connect each of them to the corresponding
wire of the power supply.
The polarity is not specified.
The applicable heavy-duty cord can be used up to 6 to 12mm of the cable outside diameter(O.D.).
Tighten each part to the following torque.
Note) If using a cable with ouside diameter of Φ9 to 12mm, remove the internal part of the rubber
seal before using.
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Operating Environment
！ Caution
1. Do not use in an atmosphere containing corrosive gases, chemicals, sea water, water, steam,
or where there is direct contact with any of these.
2. Do not use in potentially explosive environments.
3. Do not mount the product in locations where it is exposed to radiant heat.
4. Employ suitable protective measures in locations where there is contact with water droplets,
oil or welding spatter, etc.
Maintenance
！ Warnig
1. Removing the product
(1) Shut off the fluid supply and release the fluid pressure in the system.
(2) Shut off the power supply.
(3) Remove the product.
2. Low frequency operation
The valve should be switched at least once every 30 days to prevent malfunction.
The product requires periodic inspection every 6 month for optimum operating conditions.
3. Disassembly
Do not disassemble the product except the replacement of the diaphragm assembly.
！ Caution
1. Filter
(1) Make sure that the filter is not clogged.
(2) Replace filter elements after one year of use, or earlier if the pressure drop reaches 0.1MPa
2. Remove the condensate from the air filter regularly
3. Diaphragm assembly
(1) Diaphragm assembly is a consumable part. Replace the diaphragm assembly when wear or
damage is found
(2) The guideline for replacement of the diaphragm assembly is one year or the number of
operations shown below. (The life will be shorter depending on the operating condition)
The number of operations
Handling precautions
！ Caution
1. Internal leakage value given is when the inspection pressure is 0.7MPa. When the
pressure is low, internal leakage may increase.
Size Cycles
VXF21,22,23 500,000 times
VXF24,25 100,000 times
VXF26,27,28 50,000 times
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3. Outline
This operation manual introduces L shape 2-port valve with high response and
instantaneous mass flow rate controlling capacity which discharges air in acoustic velocity
and bruches off dust on the back filter or blows out work by taking advantage of impact wave.
Though main valve opens and closes by the pressure operation from the pressure working
chamber, the opening velocity of the main valve is set as high velocity to gain maiximum
efficiency with smaller air consumption.
4. Operation principle
When unenergized
When enegized
When the solenoid valve is energized,
the armature will tum on and the fluid
filled in the pressure chamber will be
exhousted to the pilot exhaust side.
The pressure in the pressure chamber
reduces by exhausting air to the pilot
exhaust.
Because the force which pushes down
the reduces by the discharge of the
fluid,the force which pushes up the
valve surpasses the push down
force,opening the main valve.
The fluid enters the IN side and goes
through the supply orifice to fill the
pressure chamber.
The main valve is closed by the force
which pushes down the valve and the
spring reaction force.
Spring
Pressure chamber
Main valve
Supply orifice
IN
OUT
Armature
Pilot exhaust
Right after energizing
8
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5. Specifications
Air operated type
Solenoid valve type
※1: Use within the allowable voltage fluctuation range of the load to be connected.
※2: Check the current of the connected load does not exceed the load output current.
VXFA21A
AB□
VXFA22A
AB□
VXFA23A
AB□
VXFA24A
AB□
VXFA25(A,B)
AB□
VXFA26(A,B,
C,D)AB□
VXFA27B
AB□
VXFA28B
AB□
Orifice size mmφ 22 28 44 53 70 80 90 100
Fluid
Minimum operating
pressure
MPa
Maximum operating
pressure
MPa
Fluid temperature
℃
Ambient temperature
℃
Environment
-10 to 60
Air
Indoor/Outdoor
Product number
0.03
0.1
0.7
-10 (Non-freezing) to 60
VXF21A
□□
VXF22A
□□
VXF23A
□□
VXF24A
□□
VXF25(A,B)
□□
VXF26(A,B,
C,D)□□
VXF27B
□□
VXF28B
□□
mmφ 22 28 44 53 70 80 90 100
MPa
MPa
℃
℃
AC VA 10
DC W 8
Fluid temperature
Indoor
Power consumption
±10% of rated voltage
7
7
4.5
4.5
Alloable voltage fiuctuation
Environment
Orifice size
Product number
0.03
0.1
IP65
Class B
0.7
-10 (Non-freezing) to 60
-10 to 60
Air
Fluid
Ambient temperature
Enclosure
Coil insulation type
Minimum operating
pressure
Maximum operating
pressure
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