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SMC 500 Series Valve Operation Manual PDF
Summary of Content for SMC 500 Series Valve Operation Manual PDF
Doc. No.VP300-OMM0002-A
Solenoid Valve PRODUCT NAME
VP(A)300/500/700 Series (PILOT VALVE : V200)
MODEL/ Series
No.VP300-OMM0002-A
Contents
Safety Instructions ---------------------------------------------------------------------------- 2,3
Precautions on Design ---------------------------------------------------------------------- 4,5
Selection ---------------------------------------------------------------------------------------- 4,5
Mounting ---------------------------------------------------------------------------------------- 5
Piping -------------------------------------------------------------------------------------------- 6
Wiring -------------------------------------------------------------------------------------------- 6
Lubrication -------------------------------------------------------------------------------------- 6
Air Supply --------------------------------------------------------------------------------------- 6,7
Operating Environment ---------------------------------------------------------------------- 7
Maintenance ------------------------------------------------------------------------------------ 7
Specific Product Precautions --------------------------------------------------------------- 8 to 12
Trouble shooting ------------------------------------------------------------------------------- 13
Remedy ------------------------------------------------------------------------------------------ 14
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No.VP300-OMM0002-A
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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No.VP300-OMM0002-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 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.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.
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No.VP300-OMM0002-A
Design / Selection
1. Confirm the specification Products represented in this instruction 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.
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 (cover
installation or approach prohibition) to prevent potential
danger caused by actuator operation.
3. Effect of back pressure when using a
manifold. Use caution when valves are used on a manifold,
because an actuator may malfunction due to
back-pressure. For single acting cylinder, take
appropriate measures to prevent the malfunction
by using it with an individual exhaust manifold .
4. Holding pressure (including vacuum). Since the valve are subject to air leakage, they cannot
be used for applications such as holding pressure
(including vacuum) in a pressure vessel.
5. Not suitable for use as an emergency
shut-off valve, etc. The valves listed in this instruction 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.
6. Release of residual pressure For maintenance purposes install a system for
releasing residual pressure.
7. 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.
8. Regarding a vacuum switch
When a valve is used for vacuum switching, use the
valve external pilot specification.
9. Ventilation Provide ventilation when using a valve in a 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.
10.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.
This will likely adversely affect the performance of the
solenoid valve and any nearby peripheral equipment.
Therefore, when it is continuously energized or the
energized period per day is longer than the
de-energized period use either: DC specification,
power-saving type. Also, please contact SMC
because depending on the application, there may be
additional valves not mentioned above that may be
used (especially in DC specification). In addition, it is
possible to shorten the energized time by making a
valve with an N.O. (normally open) specification.
For applications such as mounting a valve on a
control panel, incorporate measure to limit the heat
radiation so that it is within the operation temperature
range. For example, the temperature will be high
when a 3 station manifold.
11.Do not disassemble the product of
make any modifications, including
additional machining. It may cause human injury and/or an accident.
1. 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 as
follows.
DC coil
Should be 3% or less of the rated voltage.
AC coil
Should be 8% or less of the rated voltage.
2. Solenoid valve drive for AC with solid state output (SSR, TRIAC output, etc.)
1) Current leakage
When using a snubber circuit (C-R element) for surge
protection of the output, a very small amount of
electrical current will continue to flow even during the
OFF state. This results in the valve not returning. In a
situation where the tolerance is exceeded, as in the
above case, take measures to install a bleeder
resistor.
2) Minimum allowable load amount
(Min. load current)
When the consumption current of a valve is less than
the outputs minimum allowable load volume or the
margin is small, the output may not switch normally.
Please contact SMC.
VP Series
Precautions for 3 Port Solenoid Valve
Be sure to read before handling. Refer to main text for detailed precautions on every series.
Warning
Caution
- 5 -
No.VP300-OMM0002-A
Design / Selection
3. Surge voltage suppressor 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 1 V.
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 de-energized 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 -10 . Take appropriate
measures to avoid freezing of drainage, moisture etc.
in low temperature.
6. Operation for air blowing When using a 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
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 valves port.
7. Mounting orientation Mounting orientation is free.
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.
4. If air leakage increases or equipment does not operated 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.
Warning
VP Series
Precautions for 3 Port Solenoid Valve
Be sure to read before handling. Refer to main text for detailed precautions on every series.
Caution
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No.VP300-OMM0002-A
Piping
1. Refer to the Fittings and Tubing
Precautions 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. 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. Also, if pipe tape is used, leave 1
thread ridges exposed at the end of the threads.
4. Connection of fittings When screwing fittings into valves, tighten as follows.
(1) Follow the procedures below when installing an
SMC fitting, etc.
1) M3 types
After tightening the fitting by hand, use a wrench to
tighten the fitting an additional approximately 1/4
turn. As a reference value, tightening torque is 0.4
to 0.5Nm.
2) M5 types
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 Nm.
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.
(2) Follow the procedure of the manufacture when
fittings other than SMC is used.
3) Rc type
Tighten with the proper torque shown below.
Tightening Torque for Piping Applicable
Connection
thread
Proper tightening torque
(Nm)
Rc1/8 7 to 9
Rc1/4 12 to 14
Rc3/8 22 to 24
Rc1/2 28 to 30
5. Piping to products When piping to a product, avoid mistakes regarding the
supply port, etc.
Wiring
1. Polarity When connecting power to a solenoid valve with a DC
specification and equipped with a light or surge voltage
suppressor, check for polarity. If there is polarity, take
note of the following.
No diode to protect polarity. If a mistake is mode regarding the polarity, damage
may occur to the diode in the valve, the switching
element in a control device or power supply equipment,
etc.
With diode to protect polarity. If polarity connection is wrong, the valve does not
operate.
2. 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.
3. Check the connections. Check if the connections are correct after completing
all wiring.
Lubrication
1. Lubrication
1) The valve has been lubricated for life by the factory
and does not require any further.
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 (MSDS) of the oil.
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
causes malfunction 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 SMCs Best
Pneumatics catalog.
Caution Caution
Warning
Warning
VP Series
Precautions for 3 Port Solenoid Valve
Be sure to read before handling. Refer to main text for detailed precautions on every series.
- 7 -
No.VP300-OMM0002-A
Air Supply
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 in side 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 5 m 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 dust 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 SMCs 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 enclosures (based on IEC60529)
are protected against dust and water, however, these
products cannot be used in water.
3. Products compliant to IP65 satisfy the specifications
through mounting. 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.
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
temperatures is within the specification of the valve.
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.
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.
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 operation When the manual override is operated, connected
equipment will be actuated.
Operate after safety is confirmed.
1. Drain flushing
Remove drainage from the air filters regularly.
2. Lubrication In the case of rubber seals, once lubrication has been
started, it must be continued.
Use class 1 turbine oil (with no additive), ISO VG32
because if other lubricant oil is used, it may cause
malfunction. Please contact SMC for suggested class
2 turbine oil (with additive), ISO VG32.
Caution
VP Series
Precautions for 3 Port Solenoid Valve
Be sure to read before handling. Refer to main text for detailed precautions on every series.
Warning
Warning
Caution
Warning
- 8 -
No.VP300-OMM0002-A
Manual Override
Without an electric signal for the solenoid valve the
manual override is used for switching the main valve.
Connected actuator is started by manual operation. Use
the manual override after confirming that there is no
danger.
Non-locking push type
Push-turn locking slotted type
Push the manual override button with a small flat head
screwdriver until it stops. Turn it in the clockwise direction
at 90 to lock the manual. Turn it counterclockwise to
release it.
Push-turn locking lever type
After pushing down, turn in the direction of the arrow. If it
is not turned, it can be operated the same way as the
non-locking type.
When locking the manual override with the push-turn
locking type (D or E 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. Do not apply excessive torque when
turning the locking type manual override. (0.1Nm)
How to Use L/M-Type Plug Connector
1. Attaching and detaching connectors
To attach a connector, hold the lever and connector
unit between your fingers and insert straight onto the
pins of the solenoid valve so that the levers pawl is
pushed into the groove and locks.
To detach a connector, remove the pawl from the
groove by pushing the lever downward with your
thumb, and pull the connector straight out.
2. Crimping lead wires and sockets
Not necessary if ordering the lead wire pre-connected
model. Strip 3.2 to 3.7mm at the end of the lead wires,
insert the ends of the core wires evenly into the sockets,
and then crimp with a crimping tool. When this is done,
take care that the coverings of the lead wires do not
enter the core wire crimping area. (Please contact SMC
for details on the crimping tool.)
3. Attaching and detaching sockets with lead wire
- Attaching
Insert the sockets into the square holes of the
connector (,indication), and continue to push the
sockets all the way in until they lock by hooking into
the seats in the connector. (When they are pushed in,
their hooks open and they are locked automatically.)
Then, confirm that are locked by pulling lightly on the
lead wires.
VP Series
Specific Product Precautions 1 Be sure to read before handling.
Push down on the
manual override
button with a small
screwdriver until it
stops.
Release the
screwdriver and the
manual override will
return.
- 9 -
No.VP300-OMM0002-A
How to Use L/M-Type Plug Connector
- Detaching
To detach a socket from a connector, pull out the lead
wire while pressing the sockets hook with a stick
having a thin tip (approx.1mm). If the socket will be
used again, first spread the hook outward.
How to Use DIN Terminal The DIN terminal type with an IP65 enclosure is protected
against dust and water, however, it must not be used in
water.
Connection 1) Loosen the set screw and pull the connector out of
the solenoid valve terminal block.
2) After removing the set screw, insert a flat head
screwdriver, etc. into the notch on the bottom of the
terminal block and pry it open, separating the terminal
block and the housing.
3) Loosen the terminal screws on the terminal block,
insert the core of the lead wire into the terminal, and
attach securely with the terminal screws.
In addition, when using the DC mode type with a
surge voltage suppressor (polar: S and Z types),
connect wires corresponding to the polarity (+ or -)
that is printed on the terminal block.
4) Tighten the ground nut to secure the wire. In the case
of connecting wires, select cabtire cords carefully
because if those out of the specified range (4.5 to
7) are used, it will not be able to satisfy IP65
(enclosure). Tighten the ground nut and set screw
within the specified range of torque.
Changing the entry direction After separating terminal block and housing, the cord
entry direction can be changed by attaching the housing
in the opposite direction.
Make sure not to damage elements, etc., with the lead
wires of the cord.
Precautions Plug in and pull out the connector vertically without tilting
to one side.
Applicable cable Cable O.D.: 4.5 to 7
(Reference) 0.5 mm 2 to 1.5mm
2 , 2-core or 3-core,
equivalent to JIS C 3306
Applicable crimped terminal
O terminal : R1.25-4M that is specified in JIS C 2805
Y terminal : 1.25-3L, which is released by JST Mfg.Co.,Ltd
Stick terminal : Size 1.5 or shorter.
DIN (EN175301-803) Terminal Y type DIN terminal corresponds to the DIN connector with terminal pitch 10mm, which complies with EN175301-803B, Since the terminal pitch is different from the D type DIN connector, these two types are not interchangeable. Circuit with indicator light (Built in connector)
VP Series
Specific Product Precautions 2 Be sure to read before handling.
- 10 -
No.VP300-OMM0002-A
How to Use Conduit Terminal
Connection 1) Loosen the set screw and remove the terminal block
cover from the terminal block.
2) Loosen the terminal screws
on the terminal block, insert
the core of the lead wire or
crimped terminal into the
terminal, and attach securely
with the terminal screws.
In addition, when using the DC mode type with a
surge voltage suppressor (polar: S and Z types),
connect wires to terminal 1 and 2 corresponding to
the polarity (+ or -) as shown on the right figure.
3) Secure the cord by fastening the ground nut.
In the case of connecting wires, select cabtire cords
carefully because if those out of the specified range (4.5
to 7) are used, it will not be able to satisfy IP65
(enclosure). Tighten the Ground nut and set screw within
the specified range of torque.
Applicable cable Cable O.D.: 4.5 to 7
(Reference) 0.5 mm 2 to 1.5mm
2 , 2-core or 3-core,
equivalent to JIS C 3306
Applicable crimped terminal
O terminal: Equivalent to R1.25-3 that is specified in JIS C
2805
Y terminal: Equivalent to 1.25-3, which is released by JST
Mfg.Co.,Ltd
Use O terminal when a ground terminal is used.
Light/Surge Voltage Suppressor
DC Polar type
With surge voltage suppressor S
Grommet of L/M-type plug connector
With light/surge voltage suppressor Z
DIN or Conduit terminal
With light/surge voltage suppressor
Non-polar type With surge voltage suppressor R
Grommet or L/M-type plug connector
With light/surge voltage suppressor U
DIN or Conduit terminal
With light/surge voltage suppressor (U
Please connect correctly the lead wires to + (positive)
and (negative) indications on the connector. (For
non-polar type, the lead wires can be connected to
either one.)
When the valve with mis-wiring protection diode is used,
the voltage will drop by approx. 1V. Therefore, pay
attention to the allowable voltage fluctuation (For details,
refer to the solenoid specification of each type of valve.)
Solenoids, whose lead wires have been pre-wired : +
(positive) side red and (negative) side black.
VP Series
Specific Product Precautions 3 Be sure to read before handling.
- 11 -
No.VP300-OMM0002-A
With power saving circuit Power consumption is decreased by approx. 1/3 by
reducing the wattage required to hold the valve in an
energized state. (Effective energizing time is over 40ms
at 24 VDC.)
Refer to the electrical power waveform as shown below.
Since the voltage will drop by approx. 0.5V due to the
transistor, pay attention to the allowable voltage
fluctuation. (For details, refer to the solenoid
specifications of each type of valve.)
There is no S option, since a rectifier prevents surge voltage generation.
Grommet or L/M-type plug connector
With light/surge voltage suppressor (Z)
DIN or Conduit terminal
With light/surge voltage suppressor Z
Residual voltage of the surge voltage suppressor
Note) If a varistor of diode surge voltage suppressor is used,
there is some residual voltage to the protection
element and rated voltage. Therefore, refer to the
table below and pay attention to the surge voltage
protection on the controller side. Also, since the
response time dose change, refer to the
specifications.
Residual Voltage
Type of Actuation Changing
When changing the actuation or restarting the valve after
the change, make sure that safety is fully assured and
pay great attention.
ExampleChanging from N.C. to N.O.
1) Base mounted
1. Remove the body from the sub-plate and reset the mark on the body corresponding to the N.O. mark on
the sub-plate as shown in the figure above.
2. Remove the end plate from the body and rotate the end
plate by 180 so that the N.O. mark on the end plate is
at the top of the valve.
It is not necessary to change the piping when this is
done.
2) Body ported
Remove the end plate from the body and rotate the end
plate by 180 to correspond the N.O. mark on the end
plate to the top of the valve.
Piping should be arranged as follows.
VP Series
Specific Product Precautions 4 Be sure to read before handling.
- 12 -
No.VP300-OMM0002-A
One-touch Fittings
When fittings are used, they may interfere with one another
depending on their types and sizes. Therefore, the dimensions
of the fittings to be used should first be confirmed in their
respective catalogs.
Fittings whose compliance with the VP series is already
confirmed are stated below.
If the fitting within the applicable range is selected, there will
not be any interference.
VP Series
Specific Product Precautions 5 Be sure to read before handling.
- 13 -
No.VP300-OMM0002-A
TROUBLE SHOOTING
Insufficient bolt tightening
Foreign matter caught in armature
Abrasion "spool Ass'y"
Foreign matter caught in air seat
Abrasion armature
Fall of power supply voltage
Air leaks through exhaust
port of main valve [3(R)
port * ]
Leakage Abrasion "spool Ass'y"
Intrusion of foreign matter
Coil splashed by water
Burnt coil Higher voltage or wrong coil used
Excessive amount of lubricant
Though pilot valve does
shift, but main valve will not
shift or will be sluggish.
Fall of pilot pressure
Swelled out "spool Ass'y"
Faulty operation Pilot valve is not operated Fall of power supply voltage
Trouble phenomenon Cause expected Remedy
Should any trouble be found during operation, trace the source of the trouble in the following order and take corrective action.
Air leaks through gasket
Spool has not completely shifted
Poor seal on actuator (cylinders, etc.) side
* 1(P) port, in case of body
ported N.O type.
Blown fuse or disconnection lead wire
Poor contact at contactor wire or
connection part
Foreign matter caught in armature
Faulty wiring
Disconnection coil wire
Air leaks through pilot
exhaust port of pilot valve
Buzzing
(AC coil
A big continuous buzzing
sound is emitted when the
power is switch on.
- 14 -
No.VP300-OMM0002-A
Remedy
No. Remedy
Re-wire positively.
Regulate voltage, so that the voltage at the time of the operation becomes specifications range.
Replace part.
Replace part or re-wire positively.
Replace valve. (Pilot valve)
Regulate pressure so that pilot pressure will fall within operating pressure range furing
operation.
Replace valve (pilot valve). Protect the valve so that water does not splash the coil.
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).
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.
Check voltage. Replace valve (pilot valve).
Reduce the amount of oil so that the oil does not scatter from air exhaust port[3(R) port*, PE
port].
* 1(P) port, in case of body ported N.O type.
In case of intrusion of foreign matter, to remove foreign matter by air blow of piping and then
replace valve.
Repair or replace actuators.
After stopping air and re-tighten the bolts.
If no improvement is achieved in spite of the above countermeasure, inside of the valve may have some
abnomality. In this case, stop using the valve immediately.
If any of followings are carried out, inside of the valve may have some failure. In this case, stop using
the valve immediately.
In addition, in the case of trouble, please send it back to the supplier for repair or replacement.
1. Voltage out of rated voltage has been used.
2. Oil other than the specified one has been lubricated.
3. Lubrication has been stopped intermediately, or lubrication was suspended temporary.
4. Water splashed directely.
5. Strong impact was given.
6. Alien substance such as drain and particle got into. Drain or garbage invaded a valve.
7. Prohibited way of using the valve which is written at "Precautions" section in this operation manual
was carried out excluding above-mentioned.
No.VP300-OMM0002-A
S
Revision history
A Safety instructions PP
1st printing : MQ
4-14-1, Sotokand
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