SCM VT317 Series User manual

Doc. No.VT317∗∗-OMH0002-A
3 Port Solenoid Valve
PRODU T NAME
VT317 Series
MODEL/ Series

VT317∗∗-OMH0002-A
Contents
Safety Instructions ---------------------------------------------------------------------------------- 2,3
Precautions on Design ----------------------------------------------------------------------------- 4
Selection ----------------------------------------------------------------------------------------------- 4
Mounting ----------------------------------------------------------------------------------------------- 5
Piping --------------------------------------------------------------------------------------------------- 5
Wiring --------------------------------------------------------------------------------------------------- 5
Lubrication --------------------------------------------------------------------------------------------- 5
Air Supply ---------------------------------------------------------------------------------------------- 6
Operating Environment ----------------------------------------------------------------------------- 6
Maintenance ------------------------------------------------------------------------------------------- 6,7
Specific Product Precautions ---------------------------------------------------------------------- 8
Trouble shooting -------------------------------------------------------------------------------------- 9,10
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VT317∗∗-OMH0002-A
Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or e uipment 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 e uipment of machines (Part 1: General re uirements)
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
e uipment must be decided by the person who designs the e uipment or decides its specifications based on
necessary analysis and test results.
The expected performance and safety assurance of the e uipment 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 e uipment failure when configuring the
e uipment.
2. nly 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 e uipment 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/e uipment 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/e uipment 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 e uipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or e uipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety e uipment 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 re uiring special safety
analysis.
4.Use in an interlock circuit, which re uires 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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VT317∗∗-OMH0002-A
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
Re uirements”.
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
isdelivered.∗
∗∗
∗2)
Also, the product may have specified durability, running distance or replacement parts. Please
consult 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.
ollowed.ollowed.
ollowed.

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VT317∗∗-OMH0002-A
Design ／
／／
／ Selection
1. Confirm the specifications
The products presented in this manual are designed only
or use in compressed air systems (including vacuum). Do
not operate at pressures or temperatures, etc., beyond the
range o speci ications, as this can cause damage or
mal unction. (Re er to the speci ications.)
Please contact SMC when using a luid other than
compressed air (including vacuum).
Any damage attributed to the use beyond the
speci ications is not guaranteed.
2. Actuator drive
When an actuator, such as a cylinder, is to be driven using
a valve, take appropriate measures to prevent potential
danger caused by actuator operation.
3. Holding of pressure (including vacuum)
Since valves are subject to air leakage, they cannot be
used or applications such as holding pressure (including
vacuum) in a pressure vessel.
4. Cannot e used as an emergency shutoff valve,
etc.
The valves presented in this manual are not designed or
sa ety applications such as an emergency shuto valve. I
the valves are used in this type o system, other reliable
sa ety assurance measures should also be adopted.
5. Vacuum applications
When the valve is used or switching vacuum, take
measures such as the installation o a suction ilter to
prevent suction o external dust or other contaminants
rom the suction pad or exhaust port.
Also, it is necessary to continuously exhaust during
vacuum suction. Otherwise, external dust or other
contaminants entering into the suction pad or air leakage
can result, which causes dropping o a work piece.
6. Vacuum
When the valve is used or switching vacuum, take
measures to prevent suction o external dust or other
contaminants rom the suction pad or exhaust port.
7. A out ventilation
When using the valve in closed control panel, etc., install a
ventilating opening, etc. in order not to increase the
pressure inside a control panel by ventilating air and not to
pack the heat generated by valve.
8.Extended periods of continuous energization
I the valve is energized or extended periods o time, the
temperature rise due to the heat generated by the coil
assembly can deteriorate the per ormance or li e o the
valve and have adverse e ects on peripheral equipment
near the valve. I the total energizing time per day is
expected to be longer than the total de-energizing time per
day, use a DC speci ication valve.
When the valve is mounted in a control panel or energized
or an extended periods o time, employ measures to
radiate excess heat so that temperatures remain within
the speci ied range.
In particular, i three or more adjacent stations on the
mani old are energized together or extended periods o
time, special care should be given to a larger temperature
rise.
10. Disassem ly and modification prohi ited
Do not modi y or reconstruct (including additional
machining) the product. An injury or ailure can result.
1. Leakage voltage
When C-R device (Surge voltage suppressor) is used or
the protection o switching device, note that voltage
leakage will be increased by passing voltage leakage
through C-R device.
Suppressor residual voltage leakage should be as ollows.
DC coil: 2% or less o rated voltage
AC coil:20% or less o rated voltage
VT317 Series
3 Port Solenoid Valve / Precautions ①
①①
①
Be sure to read be ore handling.
Warning
Caution

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VT317∗∗-OMH0002-A
Mounting
1. Operation manual
Install the products and operate them only a ter reading
the Operation Manual care ully and understanding its
contents.
Also keep the manual where it can be re erred to as
necessary.
2. Maintenance space
The installation should provide with su icient space or
maintenance activities (removal o valve, etc.).
3. O serve the tightening torque for screws.
Tighten the screws to the recommended torque or
mounting the product.
4. If air leakage increases or equipment does not
operate properly, stop operation.
Check mounting conditions when air and power supplies
are connected. Initial unction and leakage tests should be
per ormed a ter installation.
5. Painting and coating
Warnings or speci ications printed or a ixed on the
product should not be erased, removed or covered up.
Please consult with SMC i paint is to be applied to
resinous parts,
Piping
1. Before piping
Be ore piping, it should be thoroughly blown out with air
( lushing) or washed to remove chips, cutting oil and other
debris rom inside the pipe.
2. Wrapping of pipe tape
When screwing piping or ittings into ports, ensure that
chips rom the pipe threads and sealing material do not
get inside the valve.
Also, when the pipe tape is used, leave 1.5 to 2 threads
ridges exposed at the end o the threads.
4. Connection of fittings
When screwing ittings into valves, tighten as ollows.
Rc
Tighten with the proper tightening torque below.
Connection thread
Applicable tightening torque (N・m )
Rc1/4 12 to 14
Wiring
1. Applied voltage
When electric power is connected to a solenoid valve, be
care ul to apply the proper voltage. Improper voltage may
cause mal unction or coil damage.
2. Confirm the connections.
A ter completing the wiring, con irm that the connections
are correct.
Lu rication
Lu rication
1) The product has been lubricated or li e at manu acturer,
and does not require lubrication in service.
2) I a lubricant is used in the system, use turbine oil Class
1 (with no additive), ISO VG32. Once a lubricant is used
in the system, lubrication must be continued because
the original lubricant applied during manu acturing will be
washed away.
When turbine oil is used, re er to its Material Sa ety
Datasheet (MSDS).
3) Please contact SMC regarding Class 2 turbine oil (with
additives), ISO VG32.
Warning
VT317 Series
3 Port Solenoid Valve / Precautions ②
②②
②
Be sure to read be ore handling.
Caution
Warning
Caution

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VT317∗∗-OMH0002-A
Air Supply
1. Type of fluids
The operating luids must be compressed air. Contact
SMC when using the product with other luids.
2. Large amount of drainage
Do not use compressed air containing a lot o condensate,
which can cause the operating ailure o pneumatic
equipment. Install an air dryer or drain catch be ore the
ilter.
3. Draining control
I an air ilter is not drained, condensate will leak to the
secondary side and cause the operation ailure o
pneumatic equipment. When it is di icult to control
drainage, the use o a ilter with an auto drain is
recommended.
For the details o compressed air mentioned above, re er to
SMC catalog "Compressed Air Puri ication System".
4. Use clean air
Do not use compressed air which contains chemicals,
synthetic oils containing organic solvents, salts or
corrosive gases, etc., as this can cause damage or
mal unction.
1. If ultra dry air is used as a fluid, it can
deteriorate the lu rication characteristics of
equipment and affect the relia ility (life) of
equipment. Contact SMC eforehand.
2. Install air filters.
Install air ilters close to valves at their upstream side. A
iltration degree o 5μｍ or less should be selected.
3. Install an aftercooler, air dryer, or drain catch
efore the filter and take appropriate measures.
Air that includes excessive drainage may cause
mal unction o valves and other pneumatic equipment. To
prevent this, install an air dryer, a tercooler or drain catch,
etc.
4. If excessive car on powder is seen, install a
mist separator on the upstream side of the
valve.
I excessive carbon powder is generated by the
compressor, it may adhere to the inside o valves and
cause mal unction.
For the details o compressed air mentioned above, re er to
SMC catalog "Compressed Air Puri ication System".
Operating Environment
1. Do not use in atmospheres where the valve is in
direct contact with corrosive gases, chemicals,
salt water, water or steam.
2. Products with IP67 ( ased on IEC60529) are
protected against dust and water, however, these
products cannot e used in water.
3. Products compliant to IP67 satisfy the
specification y mounting each product properly.
Be sure to read the Precautions for each
product.
4. Do not use in an explosive atmosphere.
5. Do not use in a place su ject to heavy vi rations
or shocks.
6. The valve should not e exposed to prolonged
sunlight. Use a protective cover.
7. Remove the emissive heat when there is a
source of heat around there.
8. If it is used in an atmosphere where there is
possi le contact with water droplets, oil, weld
spatter, etc., take suita le preventive measures.
9. When the solenoid valve is mounted in a control
panel or its energized for a long time, make sure
am ient temperatures is within the valve
specification range.
Maintenance
1. Maintenance should e performed according to
the procedure indicated in the Operation Manual.
Improper handling can cause an injury and damage and
mal unction o equipment and machinery.
2. Removal of equipment and supply / exhaust of
compressed air.
When equipment is serviced, irst con irm that measures
are in place to prevent dropping o workpieces and
run-away o equipment, etc. Then cut the supply pressure
and power, and exhaust all compressed air rom the system
using its residual pressure release unction.
In the case o 3 position closed center type, exhaust the
residual pressure between valve and cylinder.
When the equipment is to be started again a ter remounting
or replacement, irst con irm that measures are in place to
prevent lurching o actuators, etc., and then con irm that the
equipment is operating normally.
VT317 Series
3 Port Solenoid Valve / Precautions ③
③③
③
Be sure to read be ore handling.
Warning
Caution
Warning
Warning

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VT317∗∗-OMH0002-A
Maintenance
3. Low frequency operation
Valves should be switched at least once every 30 days
to prevent mal unction. (Use caution regarding the air
supply.)
4. Manual override operation
When the manual override is operated, connected
equipment will be actuated. Operate a ter sa ety is
con irmed.
1. Drain flushing
Remove drainage rom air ilters regularly.
2. Lu rication
Be sure to continue to supply lubricant once it has been
started.
And, use turbine oil Class 1 (with no additive) ISO VG32
or lubrication. I other lubricant oil is used, it may cause
mal unction.
Please contact SMC or suggested turbine oil Class 2
(with additive), ISO VG32.
VT317 Series
3 Port Solenoid Valve / Precautions ④
④④
④
Be sure to read be ore handling.
Warning
Caution

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VT317∗∗-OMH0002-A
Manifold
∗
∗∗
∗ Changing from N.C. to N.O.
This product is delivered as N.O. valve. I N.O. Valve is
needed, remove mounting screws o the required valve
and turn the valve at 180°degrees. (Make sure that there
are O-rings ixed on 4 positions o the vale sur ace.) then,
tighten the mounting screws to ix the valve to the
mani old base.
Tightening torque of the mounting screw(M4):1.4N・
・・
・m
Change of Electrical Entr Angle
1. Series VT317 can change electrical entry angle.
(4 positions)
2. How to change: Loosen the nut(1),remove the coil(2) rom
the body assembly(3), place the positioning pin(4) at the
required place, put back the coil(2)to its place, and tighten
su iciently with lock nut(1).
Bleed port
1. A bleed port or the main valve is located at the bottom o
the solenoid valve. Since blocking it causes mal unction,
do not block it.
∗Ordinarily, when the solenoid valve is mounted on a
metal sur ace, it can breathe through the breather hole,
via the breather groove. However, in particular, i the
sur ace to be mounted is made o the rubber, the rubber
could de orm and block the hole.
2. Make sure that dust and/or other oreign materials should
not enter the valve rom the unused port(e.g.exhaust
port).
Also, since there is a bleed port or the armature in the
manual override, do not allow accumulation o dust and/or
other oreign materials to block bleed port.
Caution
VT317 Series
3 Port Solenoid Valve /
Specific Product
Be sure to read be ore handling.
Caution
Manual override
Bleed port o main valve
Bottom o the solenoid valve
Bleed air passage
(1)
(2)
(4)
(3)

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VT317∗∗-OMH0002-A
TROUBLESHOOTING
Excessive supply oil amount ⑪
⑨
⑤⑧
Wo n co e
Low line voltage ⑫
Insufficient sc ew tightening ⑩
Fo eign matte caught in co e ④ Buzzing(AC coil)
Leakage is betected at the egion
between manifold base and vale
body
⑧
Ai leaks th ough manual po tion
Wo n spool
Int usion of fo eign matte
Leakage Spool valve has not completely shifted
Poo seal on actuato (cylinde s, etc.) side
Ai leaks out of connection po t.
Bu nt coil Highe voltage o w ong coil used ⑥
Coil splashed by wate ⑦
Swollen spool ⑤
Blown fuse of disconnection lead wi e ②
Poo contact at contacto wi e o
connection pa t. ③
④
⑧
B oken coil wi e
Fo eign matte caught in spool
Faulty ope ation Valve is not ope ated Faulty wi ing ①
T ouble phenomenon Cause expected Measu es
Should any t ouble be found du ing ope ation, t ace the sou ce of the t ouble in the following o de and take co ective action.

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VT317∗∗-OMH0002-A
Remedy
RemedyRemedy
Remedy
In addition, in the case of t ouble, please send it back to the supplie fo epai o eplacement.
⑪
Lessen the oil supply amount to the deg ee that oil does not spout out of the exhaust po t (R po t).
⑫Regulate voltage,so that the voltage at the time of the ope ation becomes specifications ange.
No. Remedy
①Re-wi e co ectly.
②Replace pa t.
③Replace pa t o e-wi e positively.
④Replace valve.
⑦P otect the valve so that wate does not splash the coil. Replace valve
⑤
･If w ong oil is used, completely ai blow to emove oil, and eplace valve. Afte valve is
eplaced, use tu bine oil class 1 (ISO VG32).
･When a la ge quantity of d ain is given and cannot ca y out d ain omission su ely, install
eithe an auto-d ain o a d ye .The valve should be eplaced.
⑥Check voltage. Replace valve
⑧Replace wo n spool. To emove fo eign matte ,ai blow piping, then eplace valve.
⑨Repai o eplace actuato s.
⑩Isolate the valve and e-tighten the bolts.
If no imp ovement is achieved in spite of the above counte measu e, inside of the valve may have some
abnomality. In this case, stop using the valve immediately.
If any of followings a e ca ied out, inside of the valve may have some failu e. In this case, stop using
the valve immediately.
① Voltage out of ated voltage has been used.
② Oil othe than the specified one has been lub icated.
③ Lub ication has been stopped inte mediately, o lub ication was suspended tempo a y.
④ Wate splashed di ectely.
⑤ St ong impact was given.
⑥ Alien substance such as d ain and pa ticle got into. D ain o ga bage invaded a valve.
⑦ P ohibited way of using the valve which is w itten at "P ecautions" section in this ope ation manual
was ca ied out excluding above-mentioned.

VT317∗∗-OMH0002-A
S
Revision history
□
A Safety Instructions Po
1st printing: MX
4-14-1, Sotokanda, hiyoda-ku, Tokyo 101-0021 JAPAN
Tel: + 81 3 5207 8249 Fax: [phone]
URL http://www.smcworld.com
Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
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