SMC Networks SV Series User manual

Doc. No. SV1000-OME0002-C
Solenoid Valve
PRODUCT NAME
SV Series
MODEL / Series

SV1000*-OME0002-C
Contents
Safety Instructions ---------------------------------------------------------------------------- 2, 3
Precautions on Design / Selection ---------------------------------------------------------- 4, 5
Mounting ---------------------------------------------------------------------------------------- 5,6
Piping -------------------------------------------------------------------------------------------- 6
Wiring -------------------------------------------------------------------------------------------- 6
Lubrication -------------------------------------------------------------------------------------- 6
Air Supply --------------------------------------------------------------------------------------- 7
Operating Environment ---------------------------------------------------------------------- 7
Maintenance ------------------------------------------------------------------------------------ 7,8
UL approved ------------------------------------------------------------------------------------ 8
Specific Product Precautions --------------------------------------------------------------- 9 to 11
Construction ------------------------------------------------------------------------------------ 12
Trouble shooting ------------------------------------------------------------------------------- 13
Remedy ------------------------------------------------------------------------------------------ 14
- 1 -

SV1000*-OME0002-C
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: 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.
-2-

SV1000*-OME0002-C
Safety Instructions
Caution
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. 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 governed 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 governing 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.
-3-

- 4 -
SV1000OME0002-C
Design / Selection
1. Confirm the specifications.
Products represented in this manual are designed only for
use in compressed air systems (including vacuum).
Do not operate at pressures or temperatures, etc., beyond
the range of specifications, as this can cause damage or
malfunction. (Refer to the specifications.) Please contact
SMC when using a fluid other than compressed air
(including vacuum). We do not guarantee against any
damage if the product is used outside of the specification
range.
2. Actuator drive
When an actuator, such as a cylinder, is to be driven using
a valve, take appropriate measures (such as the
installation of a cover or the restricting of access to the
product) to prevent potential danger caused by actuator
operation.
3. Intermediate stops
For 3-position closed center , it is difficult to make a piston
stop at the required position accurately due to the
compressibility of air.
Furthermore, since valves and actuators are not
guaranteed for zero air leakage, it may not be possible to
hold a stopped position for an extended period of time.
Please contact SMC if it is necessary to hold a stopped
position for an extended period of time.
4. Effect of back pressure when using a manifold
Use caution when valves are used on a manifold,
because actuator may malfunction due to back- pressure.
Especially when using a 3-position exhaust center valve,
a double check valve, or a single acting cylinder, take
appropriate measures to prevent malfunction by using it
with an individual EXH spacer assembly or a back
pressure check valve.
5. Holding pressure (including vacuum)
Since the valves are subject to air leakage, they cannot be
used for applications such as holding pressure (including
vacuum) in a pressure vessel.
6. Not suitable for use as an emergency shutoff
valve, etc.
The valves listed in this manual are not designed for
safety applications such as an emergency shutoff valve. If
the valves are used for the mentioned applications,
additional safety measures should be adopted.
7. Release of residual pressure
For maintenance and inspection purposes install a system
for releasing residual pressure. Especially in the case of
3-position closed center valve, ensure that the residual
pressure between the valve and the cylinder is released.
8. Operation in a vacuum condition
When a valve is used for switching a vacuum, take
measures to install a suction filter or similar to prevent
external dust or other foreign matter from entering inside
the valve. In addition, at the time of vacuum adsorption,
be sure to vacuum at all times. Failure to do so may result
in foreign matter sticking to the adsorption pad, or air
leakage causing the workpiece to drop.
9. Regarding a vacuum switch valve and a
vacuum release valve
If a non-vacuum valve is installed in the middle of piping
system having a vacuum, the vacuum condition will not
be maintained. Use a valve designed for use under
vacuum condition.
10. Double solenoid type
When using the double solenoid type fot the first time,
actuators may travel in an unexpected direction
depending on the switching position of the valve.
Implement measures to prevent any danger from
occurring when operating the actuator.
11. Ventilation
Provide ventilation when using a valve in confined area,
such as in a closed control panel. For example, install a
ventilation opening, etc. in order to prevent pressure from
increasing inside of the confined area and to release the
heat generated by the valve.
12. Extended periods of continuous energization
If a valve will be continuously energized for an
extended period of time, the temperature of the valve will
increase due to the heat generated by the coil assembly.
This will likely adversely affect the performance of the
valve and any nearby peripheral equipment. Therefore,
please use under the conditions that the valve is to be
energized for periods within 30 minutes at a time or that
during the hours of operation the energized period per
day is shorter than the de-energized period.
13. Do not disassemble the product or make any
modifications, including additional machining.
Doing so may cause human injury and/or an accident.
14. Resumption after a long period of holding time
When resuming operation after a long period of holding
time, there are cases in which, regardless of whether the
product is in an ON or OFF state, there is a delay in the
initial response time due to adhesion. Conducting several
cycles of running-in operation will solve this problem.
Please consider implementing this before resumption.
1. Precautions for 2-position double solenoid
valves
If a double solenoid valve is operated with momentary
energization, it should be energized for at least 0.1
second. However, depending on the condition of the
secondary load, it should be energized until the cylinder
reaches the stroke end position, since there is a
possibility of malfunction.
SV Series
5 Port Solenoid Valve / Precautions 1
Be sure to read before handling.
Caution
Warning

- 5 -
SV1000OME0002-C
Design / Selection
2. Leakage voltage
Take note that the leakage voltage will increase when a
resistor is used in parallel with switching element or a C-R
circuit (surge voltage suppressor) is used for protecting a
switching device because of the passing leakage voltage
through the C-R circuit. The suppressor residual leakage
voltage should be 3% or less of rated voltage.
3. Surge voltage suppressor
1) The surge voltage suppressor built into the valve is
intended to protect the output contacts so that the surge
generated inside valve does not adversely affect the
output contacts. Therefore, if an overvoltage or
overcurrent is received from an external peripheral device,
the surge voltage protection element inside the valve is
overloaded, causing the element to break. In the worst
case, the breakage causes the electric circuit to enter
short-circuit status. If energizing continues while in this
state, a large current flows. This may cause secondary
damage to the output circuit, external peripheral device,
or valve, and may also cause a fire. So, take appropriate
protective measures, such as the installation of an
overcurrent protection circuit in the power supply or a
drive circuit to maintain a sufficient level of safety.
2) If a surge protection circuit contains nonstandard
diodes, such as Zener diodes or varistor, a residual
voltage that is in proportion to the protective circuit and
the rated voltage will remain. Therefore, take into
consideration the surge voltage protection of the controller.
In the case of diodes, the residual voltage is
approximately 1V.
4. Surge voltage intrusion
With non-polar type solenoid valves, at times of sudden
interruption of the loading power supply, such as
emergency shutdown, surge voltage intrusion may be
generated from loading equipment with a large capacity
(power consumption), and the solenoid valve in a
deenergized state may switch over (see Figure 1).
When installing a breaker circuit for the loading power
supply, consider using a solenoid valve with polarity (with
polarity protection diode), or install a surge absorption
diode between the loading equipment COM line and the
output equipment COM line (see Figure 2).
5. Operation in a low temperature condition
It is possible to operate a valve in extreme temperature,
as low as -10oC. Take appropriate measures to avoid
freezing of drainage, moisture etc. in low temperature.
6. Operation for air blowing
When using solenoid valve for air blowing, use an
external pilot type.
Use caution because the pressure drop caused by the air
blowing can have an affect on the internal pilot type valve
when the internal pilot type valves and external pilot type
valves are used on the same manifold.
Additionally, when compressed air within the pressure
range of the established specifications is supplied to the
external pilot type valve’s port, and a double solenoid
valve is used for air blowing, the solenoids should
normally be energized when air is being blown.
7. Mounting orientation
Mounting orientation is universal.
No specific orientation is necessary.
8. Initial lubrication of main valve
The following initial lubricant has already been applied to
the main valve.
•Rubber seal, spool valve: Grease
This valve is standard valve products that use fluorine
grease for food processing equipment (NSF H-1).
9. For the pilot EXH (PE) port
If the solenoid valve and the manifold’s pilot EXH (PE)
port is restricted extremely or blocked, abnormal
operation of the solenoid valve may occur.
Mounting
1. Operation manual
Install the products and operate them only after reading
the operation manual carefully and understanding its
contents.Also, keep the manual where it can be referred
to as necessary.
2. Ensure sufficient space for maintenance
activities.
When installing the products, allow access for
maintenance.
3. Tighten threads with the proper tightening
torque.
When installing the products, follow the listed torque
specifications.
SV Series
5 Port Solenoid Valve / Precautions 2
Be sure to read before handling.
Caution
Warning

- 6 -
SV1000OME0002-C
Mounting
4. If air leakage increases or equipment does not
operate properly, stop operation.
Check mounting conditions when air and power supplies
are connected. Initial function and leakage tests should
be performed after installation.
5. Painting and coating
Warnings or specifications printed or affixed to the
product should not be erased, removed or covered up.
Please consult with SMC before applying paint to
resinous parts, as this may have an adverse effect due to
the solvent in the paint.
Piping
1. Refer to the Fittings and Tubing Precautions
(Best Pneumatics No.7) for handling One-touch
fittings.
2. Preparation before piping
Before piping is connected, it should be thoroughly
blown out with air (flushing) or washed to remove chips,
cutting oil and other debris from inside the pipe.
3. Winding of sealant tape
When screwing piping or fittings into ports, ensure that
chips from the pipe threads or sealing material do not
enter the piping.Also, if sealant tape is used, leave 1
thread ridge exposed at the end of the threads.
4. Using closed center
For closed center, check the piping to prevent air leakage
from the piping between the valve and the cylinder.
5. Connection of fittings
When screwing fitting into the valve, tighten it as follows.
1) When using SMC’s fitting, follow the procedures
below to tighten it.
- M5
After tightening the fitting by hand, use a wrench to
tighten the fitting an additional approximately 1/6 to 1/4
turn. As a reference value, tightening torque is 1 to 1.5
N･m.
Note) If tightened excessively, the thread of the product
may break or the gasket may deform. If tightened
insufficiently, the thread of the product may become
loose. In either case, air leakage can occur.
- When using a fitting other than SMC fitting, follow the
instructions given byrelevant fitting manufacturer.
2) When screwing the Rc thread or fitting, follow the
procedures below to tighten it.
Tighten with the proper torque shown below.
Tightening torque for fitting
Connection thread
Proper tightening torque (N･m)
Rc1/8
3 to 5
Rc1/4
8 to12
Rc3/8
15 to 20
6. Piping to products
When piping to a product, avoid mistakes regarding the
supply port, etc.
Wiring
1. The solenoid valve is an electrical product. For
safety, install an appropriate fuse and circuit
breaker before use.
1. Applied voltage
When electric power is connected to a solenoid valve, be
careful to apply the proper voltage. Improper voltage may
cause malfunction or coil damage.
2. Check the connections.
Check if the connections are correct after completing all
wiring.
3. External force applied to the lead wire
If an excessive force is applied to the lead wire, this may
cause faulty wiring. Take appropriate measures so that a
force of 30 N or more is not applied to the lead wire.
When instructions are given in the Specific Product
Precautions, follow these specifications.
1. Lubrication
1) All valves have been lubricated for life by the
manufacturer and therefore, do not require lubrication
while in service.
2) If a lubricant is used in the system, use class 1 turbine oil
(no additive), ISO VG32. Once a lubricant is used in the
system, lubrication must be continued because the
original lubricant applied during manufacturing will be
washed away. If turbine oil is used, refer to the Material
Safety Data Sheet (SDS) of the oil. Please contact SMC
for details about class 2 turbine oil (with additives) ISO
VG32.
2. Lubrication amount
If the lubrication amount is excessive, the oil may
accumulate inside the pilot valve, causing malfunction or
response delay. So, do not apply a large amount of oil.
When a large amount of oil needs to be applied, use an
external pilot type to put the supply air on the pilot valve
side in the non-lube state. This prevents the
accumulation of oil inside the pilot valve.
Lubrication
SV Series
5 Port Solenoid Valve / Precautions 3
Be sure to read before handling.
Caution
Caution
Warning
Warning
Warning

- 7 -
SV1000OME0002-C
Air Supply
1. Type of fluids
Please consult with SMC when using the product in
applications other than compressed air.
2. When there is a large amount of drainage.
Compressed air containing a large amount of drainage
can cause malfunction of pneumatic equipment. An air
dryer or water separator should be installed upstream
from filters.
3. Drain flushing
If condensation in the drain bowl is not emptied on a
regular basis, the bowl will overflow and allow the
condensation to enter the compressed air lines. It cause
malufunction of pneumatic equipment.
If the drain bowl is difficult to check and remove,
installation of a drain bowl with an auto drain option is
recommended.
For compressed air quality, refer to SMC’s Best Pneumatics
catalog.
4. Use clean air.
Do not use compressed air that contains chemicals,
synthetic oils including organic solvents, salt or corrosive
gases, etc., as it can cause damage or malfunction.
1. When extremely dry air is used as the fluid,
degradation of the lubrication properties inside
the equipment may occur, resulting in reduced
reliability (or reduced service life) of the
equipment. Please consult with SMC.
2. Install an air filter.
Install an air filter upstream near the valve. Select an air
filter with a filtration size of 5μｍ or smaller.
3. Take measures to ensure air quality, such as by
installing an aftercooler, air dryer, or water
separator.
Compressed air that contains a large amount of drainage
can cause malfunction of pneumatic equipment such as
valves. Therefore, take appropriate measures to ensure
air quality, such as by providing an aftercooler, air dryer, or
water separator.
4. If excessive carbon powder is seen, install a
mist separator on the upstream side of the
valve.
If excessive carbon powder is generated by the
compressor, it may adhere to the inside of a valve and
cause it to malfunction.
For compressed air quality, refer to SMC’s Best Pneumatics
catalog.
Operating Environment
1. Do not use in an atmosphere having corrosive
gases, chemicals, sea water, water, water steam,
or where there is direct contact with any of
these.
2. Products with IP65 and IP67 enclosures (based
on IEC60529) are protected against dust and
water. However, these products cannot be used
in water.
3. Products compliant with IP65 and IP67 satisfy
the product specifications when mounted
properly. Be sure to read the precautions for
each product.
4. Do not use in an environment where flammable
gas or explosive gas exists. Usage may cause a
fire or explosion. The products do not have an
explosion proof construction.
5. Do not use in a place subject to heavy vibration
and/or shock.
6. The valve should not be exposed to prolonged
sunlight. Use a protective cover. Note that the
valve is not for outdoor use.
7. Remove any sources of excessive heat.
8. If it is used in an environment where there is
possible contact with oil, weld spatter, etc.,
exercise preventive measures.
9. When the solenoid valve is mounted in a
control panel or its energized for a long time,
make sure ambient temperature is within the
specification of the valve.
1. Temperature of ambient environment
Use the valve within the range of the ambient temperature
specification of each valve. In addition, pay attention
when using the valve in environments where the
temperature changes drastically.
2. Humidity of ambient environment
• When using the valve in environments with low humidity,
take measures to prevent static.
• If the humidity rises, take measures to prevent the
adhesion of water droplets on the valve.
SV Series
5 Port Solenoid Valve / Precautions 4
Be sure to read before handling.
Caution
Caution
Warning
Warning

- 8 -
SV1000OME0002-C
Maintenance
1. Perform maintenance inspection according to
the procedures indicated in the operation
manual.
If handled improperly, malfunction and damage of
machinery or equipment may occur.
2. Removal of equipment, and supply/exhaust of
compressed air
When components are removed, first confirm that
measures are in place to prevent workpieces from
dropping, run-away equipment, etc. Then, cut off the
supply pressure and electric power, and exhaust all
compressed air from the system using the residual
pressure release function.
For 3-position closed center, exhaust the residual pressure
between the valve and the cylinder.
When the equipment is operated after remounting or
replacement, first confirm that measures are in place to
prevent lurching of actuators, etc. Then, confirm that the
equipment is operating normally. In particular, when a
2-position double solenoid valve is used, releasing
residual pressure rapidly may cause the spool valve to
malfunction, depending on the piping conditions, or the
connected actuator to operate.
3. Low frequency operation
Valves should be operated at least once every 30 days to
prevent malfunction. (Use caution regarding the air
supply.)
4. Manual override
When the manual override is operated, connected
equipment will be actuated.
Operate after safety is confirmed.
5. If the volume of air leakage increases or the
valve does not operate normally, do not use the
valve. Perform periodic maintenance on the
valve to confirm the operating condition and
check for any air leakage.
1. Drain flushing
Remove drainage from the air filters regularly. (Refer to
the specifications.)
2. Lubrication
Once lubrication has been started, it must be continued.
Use class 1 turbine oil (with no additives), VG32. If other
lubricant oil is used, it may cause a malfunction. Please
contact SMC for information on the suggested class 2
turbine oil (with additives), VG32.
3. Manual override operation
When switching a double solenoid valve via the manual
override operation, instantaneous operation may cause the
malfunction of the cylinder. It is recommended that the
manual override be held until the cylinder reaches the
stroke end position.
When conformity to ULis required, the SI unit should be
used with a UL 1310 Class 2 power supply.
The SI unit is a ULapproved product only if they have
a mark on the body.
UL approved
SV Series
5 Port Solenoid Valve / Precautions 5
Be sure to read before handling.
Caution
Caution
Warning

SV1000-OME0002-C
Environment
When using built-in silencer type manifold with an IP67
enclosure, keep the exhaust port of the silencer from
coming in direct contact with water or other liquids.
Liquid filtration through the exhaust port of the silencer
can cause damage to the valve.
Manual Override Operation
Handle carefully, as connected equipment can be actuated
through manual override operation.
When locking the manual override with the push-turn locking
slotted type, be sure to push it down before turning. Turning
without first pushing it down can cause damage to the manual
override and other trouble such as air leakage, etc.
Exhaust Restriction
Since Series SV is a type in which the pilot valve exhaust joins
the main valve exhaust inside the valve, use caution, so that the
piping from the exhaust port is not restricted.
SV Series Used as a 3 Port Valve
In the case of using a 5 port valve (as a 3 port valve)
The SV series can be used as normally closed (N.C.) or normally
open (N.O.) 3 port valves by closing one of the cylinder ports (A or
B) with a plug. However, they should be used with the exhaust
ports kept open. They are convenient at times when a double
solenoid type 3 port valve is required.
Light/Surge Voltage Suppressor
Light Indication
Connector Entry Directions
SV Series
Specific Product Precautions 1
Be sure to read this before handling.
Warning
Caution
Warning
Caution
Caution
Caution
Caution
Caution
-9-

SV1000-OME0002-C
Manifold Mounting
There will be slight variations in the width of manifold blocks due to
tolerance for the stacking manifold type.
As themanifold is made up of a combination of manifold blocks,
there will be an error due to accumulated tolerance between the
actual pitch dimensions of the mounting holes used to secure the
manifold and the values stated in the catalog. Keep this inmind
when increasing the number of stations.
How to Order Manifold
The letter “S” or “D” is indicated on manifold blocks for the SV
series as shown below. This indication refers to the type of
substrate assembly (single wiring or double wiring) inside the
manifold blocks. When the manifold specification sheet does not
include a wiring specification, all stations will be double wiring
specification (D). In this case, single and double solenoid valves
can be mounted in any position, but when a single valve is used,
there will be an unused control signal. To avoid this, indicate
positions of manifold blocks for single wiring specification (S) and
double wiring specification (D) on a manifold specification sheet.
(Note that double, 3 or 4 position valves cannot be used for
manifolds blocks
with single wiring
specification (S).)
Substrate Assemblies inside Manifolds
Substrate assemblies inside of manifolds cannot be taken apart.
Attempting to do so may damage parts.
One-touch Fittings
1. Tube attachment/detachment for One-touch
fittings
1) Attaching of tube
(1) Take a tube having no flaws on its periphery and cut it off at
a right angle. When cutting the tube, use tube cutters TK-1,
2 or 3. Do not use pinchers, nippers or scissors, etc.
If cutting is done with tools other than tube cutters, there is
the danger that the tube may be cut diagonally or become
flattened, etc., making a secure installation impossible, and
causing problems such as the tube pulling out after
installation or air leakage.Also allow some extra length in
the tube.
(2) Grasp the tube and push it in slowly, inserting it securely all
the way into the fitting.
(3)After inserting the tube, pull on it lightly to confirm that it will
not come out. If it is not installed securely all the way into the
fitting, this can cause problems such as air leakage or the
tube pulling out.
2) Detaching of tube
(1) Push in the release button sufficiently, and push the collar
evenly at the same time.
(2) Pull out the tube while holding down the release button so
that it does not come out. If the release button is not pressed
down sufficiently, there will be increased bite on the tube and
it will become more difficult to pull it out.
(3) When the removed tube is to be used again, cut off the
portion which has been chewed before reusing it. If the
chewed portion of the tube is used as is, this can cause
trouble such as air leakage or difficulty in removing the tube.
Other Tubing Brands
1. When using tube other than SMC brand, confirm
that the following specifications are satisfied with
respect to the outside diameter tolerance of the
tube.
1) Nylon tubing within ±0.1 mm
2) Soft nylon tubing within ±0.1 mm
3) Polyurethane tubing within +0.15 mm within –0.2 mm
Do not use tubing which does not meet these outside diameter
tolerances. It may not be possible to connect them, or they may
cause other trouble, such as air leakage or the tube pulling out
after connection.
Back Pressure Check Valve Built-in Type
1. Valves with built-in back pressure check valve is to protect the
back pressure inside a valve. For this reason, use caution the
valves with external pilot specification cannot be pressurized
from exhaust port [3/5(E)].As compared with the types which
do not integrate the back pressure check valve, C value of the
flow rate characteristics goes down. For details, please
contact SMC.
2. Do not switch valves when A or B port is open to the
atmosphere, or while the actuators and air operated
equipment are in operation. The back pressure prevention
seal may be peeled off, which may cause air leakage or
malfunctions. Use caution especially when performing a trial
operation or maintenance work.
SV Series
Specific Product Precautions 2
Be sure to read this before handling.
Caution
Caution
Caution
Caution
Caution
Caution
-10-

SV1000-OME0002-C
SV Series
Specific Product Precautions 3
Be sure to read this before handling.
-11-

- 12 -
SV1000*-OME0002-C

- 13 -SV1000*-OME0002-C
TROUBLESHOOTING
Cause expected
Burnt coil
Measures
Should any trouble be found during operation, trace the source of the trouble in the following order and take corrective action.
⑤
Faulty operation
Pilot valve is not operated
Though pilot valve does
shift, but main valve will not
shift or will be sluggish.
Foreign matter caught in armature
Fall of power supply voltage.
Trouble phenomenon
⑩
Blown fuse or disconnection lead wire
Disconnection coil wire
Poor contact at contactor wire or connection part
Poor seal on actuator (cylinders, etc.) side
⑫
Fall of pilot pressure
Swelled out " spool ass'y " ring
Abrasion " spool ass'y" ring
Poor operation or adherence
⑬
Excessive amount of lubricant
Higher voltage or wrong coil used
⑧
⑥
⑦
Insufficient bolt tightening
Foreign matter caught in air seat of pilot valve
⑤
Leakage
Air leaks through exhaust
port of main valve
Air leaks through gasket
Intrusion of foreign matter
Spool has not completely shifted
Coil splashed by water
⑨
⑥
⑦
⑪
Foreign matter caught in core of pilot valve
(In case of external pilot) Air
leaks through pilot exhaust
port of pilot valve
Faulty wiring
②
①
Foreign matter caught in air seat of pilot valve
⑤
Foreign matter caught in core of pilot valve
③
④

- 14 -SV1000*-OME0002-C
Remedy
No.
Remedy
⑤
④
③
②
Replace part.
⑥
⑦
･When a large quantity of drain is given and cannot carry out drain omission surely, install either an
auto-drain or a dryer.The valve should be replaced.
･If wrong oil is used, completely air blow to remove oil, and replace valve. After valve is replaced, use
turbine oil class 1 (ISO VG32).
Regulate pressure so that pilot pressure will fall within operating pressure range furing operation.
⑤Strong impact was given.
⑥Alien substance such as drain and particle got into. Drain or garbage invaded a valve.
Check voltage. Replace valve (pilot valve).
⑩
⑨
Protect the valve so that water does not splash the coil.
In case of intrusion of foreign matter, to remove foreign matter by air blow of piping and then replace
valve.
⑪
⑫
⑧
Reduce the amount of lubricant to the degree that no oil splashes out of the air exhaust (E) port.
In addition, in the case of trouble, please send it back to the supplier for repair or replacement.
①Voltage out of rated voltage has been used.
If any of followings are carried out, inside of the valve may have some failure. In this case, stop using
the valve immediately.
②Oil other than the specified one has been lubricated.
⑦Prohibited way of using the valve which is written at "Precautions" section in this operation manual
③Lubrication has been stopped intermediately, or lubrication was suspended temporary.
④Water splashed directely. (Except IP65/67 protected product.)
①
Regulate voltage, so that the voltage at the time of the operation becomes specifications range.
Re-wire correctly.
was carried out excluding above-mentioned.
Replace valve.
Replace part or re-wire positively.
Repair or replace actuators.
After stopping air and re-tighten the bolts.
⑬

SV1000*-OME0002-C
Revision history
CRENEWAL 2020.6
4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN
Tel: + 81 3 5207 8249 Fax: [phone]
URL https://www.smcworld.com
Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
© 2020 SMC Corporation All Rights Reserved