SMC Networks IL201 Series User manual

No.IL02-OM00011-B
PRODUCT NAME
LOCK UP VALVE
MODEL/ Series
IL201・IL211

Table of Contents
Instructions for your Safety 1～2
1. Summary 3
2. Specification 3
3. Operation Principle 3～4
4. Transportation and Storage 5
5. Mounting and Piping 5
6. Precautions in Using 6
7. Maintenance 7
8. Troubleshooting 8
9. Spare Parts List 9
10. Drawing 10～11

These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or
“Danger.”
They are all important notes for safety and must be followed in addition to International Standards
(ISO/IEC) *1) , and other safety regulations.
*1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
ISO 4413: Hydraulic fluid power -- General rules relating to systems.
IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements)
ISO 10218-1992: Manipulating industrial robots -Safety.
etc.
Caution
Caution indicates a hazard with a low level of risk which, if not avoided, could result
in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk which, if not avoided, could
result in death or serious injury.
Danger
Danger indicates a hazard with a high level of risk which, if not avoided, will result
in death or serious injury.
Warning
1. The compatibility of the product is the responsibility of the person who designs the
equipment or decides its specifications.
Since the product specified here is used under various operating conditions, its compatibility with specific
equipment must be decided by the person who designs the equipment or decides its specifications based on
necessary analysis and test results.
The expected performance and safety assurance of the equipment will be the responsibility of the person who
has determined its compatibility with the product.
This person should also continuously review all specifications of the product referring to its latest catalog
information, with a view to giving due consideration to any possibility of equipment failure when configuring the
equipment.
2. Only personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment including our products must be
performed by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is
confirmed.
1.The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed.
2.When the product is to be removed, confirm that the safety measures as mentioned above are implemented
and the power from any appropriate source is cut, and read and understand the specific product precautions
of all relevant products carefully.
3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the product is
to be used in any of the following conditions.
1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to
direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or
other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special safety
analysis.
4.Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a
mechanical protective function, and periodical checks to confirm proper operation.
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Safety Instructions

Caution
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 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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Safety Instructions

1. Summary
When accidents of air source and piping in pneumatic process control line cause supplying air
failure such as dropping setting pressure, lock-up valve shuts pneumatic circuit between air
source and operating part.
2. Specification
Signal pressure Max. 1MPa (Note 1)
Setting pressure range 0.14～0.7MPa (Note 1)
Line pressure Max. 0.7MPa
Effective orifice (Cv factor) 17mm
2
(0.9)
Ambient and fluid temperature －5～60℃
Port size Rc 1/4
Differential 0.01 MPa
Mass IL201 : 450g
IL211 : 640g
(Note 1) Signal pressure and the set pressure must be different for more than 0.1 MPa.
Inadequate differential pressure may increase the bleed amount from the bleed hole
because of the wearing of internal part. This may effect on the performance.
3. Operating principles
When signal pressure entering the upper diaphragm chamber is larger than the force by
pressing adjusting spring, the diaphragm A moves upward, the exhaust valve is closed, signal
pressure enters the lower diaphragm camber, the diaphragm B is a affected, the valve is opened
against the spring, and the flow can go from IN to OUT. When signal pressure is lower than the
setting pressure, the diaphragm is pushed down and the pressure of lower pressure diaphragm
is exhausted from the exhaust valve. Therefore, the valve is closed by spring force and air circuit
is shut down. For single operating type the valve is single seat, and double seat for double
acting.
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Caution

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4. Transportation and Storage
Warning
(1) Handle the product with care.
(2) Do not expose to rain.
(3) The product is packed in a vinyl bag for shipment to prevent from dust. Avoid taking out of
the bag just before piping even after unpacking.
(4) If the product is kept unpacking for a certain period, select a place where there is no
moisture nor corrosive gas.
While the product shipped has been applied specified paint and surface treatment, take
care that inappropriate storing environment may cause generating rust.
5. Mounting and Piping
Warning
Precaution for mounting
(1) Ensure to use a filter for IN line (IN) and signal pressure line (SIG).
(2) Connect the lock-up valve after flushing piping used.
(3) The setting pressure increases when the setting screw is turned clockwise and it decreases
when the screw is turned counterclockwise.
(4) Fix by the lock nut when the setting pressure is settled.
(5) Connect piping not to leak air from piping joints.
Precaution for piping
Thoroughly flush piping to prevent entering foreign matter such as chips, cutting oil and dust before
connecting piping.
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6. Precautions in using
Warning Operation
(1) Do not operate the lock-up valve out of the specifications, because it causes malfunction.
(2) If lock-up valve failure affecting the system is expected, provide a safety circuit for the system
to avoid danger.
(3) When supplying air pressure fails and it decreases lower than the setting pressure, air source
and operating part are shut down, but since the pressure decrease gradually, check line
pressure (movement of actuator) constantly.
Warning Handling
(1) Excess vibration and impact on the lock-up valve cause failure, that take care handling during
transportation and operation.
(2) If the product is left the site for long time, take measures such as closing a cover and plugging
piping ports to avoid direct instruction of rain.
If the case of high temperature and high humidity atmosphere, take measures not to form
dews in the internal machines. Especially for packing for export, thoroughly take
countermeasures for dew formation.
Warning Air supply
(1) Supply clean whose moisture and dust are removed since there is capillary tubing in the
lock-up valve inside. Avoid using a lubricator.
(2) Avoid using compressed air compressed air containing chemicals, synthetic fluid including
organic solvent, salinity, and corrosive gas as it may cause malfunction.
Warning Environment
(1) Do not use in environment where the product is exposed to corrosive gas, chemicals, salt
water, water or steam.
(2) Do not operate the product in a location where it is subject to strong vibration and/or shock.
For vibration, it should be within 1G 60Hz.
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7. Maintenance
Warning
(1) If handled improperly, compressed air can be dangerous. Maintenance and replacement of
unit parts should be performed only by trained and experienced personnel for
instrumentation equipment as well as following the product specifications.
(2) For maintenance, removing lock-up valve or replacing unit parts without dismounting, stop
supply pressure and exhaust residual pressure beforehand.
(3) After installation, repair and disassembling, connect compressed air and perform a proper
function test and a leak test. If bleed noise is louder than the initial state or operation is
abnormal, stop operation and check if installation is proper or not.
Caution
(1) Check air leak from piping which compressed air flows. Air leak from air piping could
deteriorate characteristics.
Air is exhausted from the bleed port constantly, and this air consumption is essential due to
valve structure, so that it is not a problem if the range is within the specification.
Small amount of air leaks from diaphragm (cloth between rubber sheets of diaphragm) and
its seating part, but it is within the tolerance.
(2) Check if supply air is clean or not. If dust, particle, oil, and moisture contained in supply air
are entered in the device, it may cause malfunction or failure of lock-up valve, so that
regularly examine air preparation equipment.
(3) When a lock-up valve is disassembled, apply small amount of grease to sliding sections (“O”
ring).
Use grease of Toray Silicon SH45 Silicon Grease.
(4) Examine lock-up valve once a year. Replace deteriorated packing parts such as diaphragms
and “O” rings, and units during maintenance.
Especially, when the product is operated in severe environment and operating conditions
such as the coast, take measures early.
(5) The interval of 3 years is recommended t change diaphragm, “O” ring and spring.
(6) Refer to the spare parts list as for parts for replacement.
(7) Assembling / disassembling of the product should be performed indoors in accordance with
the assembling / disassembling drawing.
(8) 1～2 times of operation test is necessary if the product is not operated for a long period.
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8. Troubleshooting
Warning
Stop using the product if failures are not improved.
Failures Causes Countermeasures
Excess flow from exhaust
port
Dust and carbon adhere to
seating part of exhaust port of
diaphragm Ass’y.
Disassembling cleaning
(Change diaphragm Ass’y if there
is a flaw on seating part of
exhaust port.)
Breakage of diaphragmAss’y. Replace diaphragm Ass’y.
Air is not exhausted from
exhaust port Exhaust port of diaphragm Ass’y is closed.
Disassembling cleaning
(Change diaphragm Ass’y if there
is a flaw.)
Signal circuit is not closed
even if signal pressure is less
than setting pressure.
Exhaust port of diaphragm
Ass’y is closed.
Disassembling cleaning
(Change diaphragm Ass’y if there
is a flaw.)
Pneumatic circuit is not open
even if signal pressure is
higher than setting pressure.
Filter for signal pressure is
clogged up. Replace filter.
Diaphragm Ass’y is broken. Change diaphragm Ass’y.
Pneumatic circuit is not shut
off completely.
Dust or carbon is adhered to
rubber sheet of valve.
Disassembling cleaning
(Change diaphragm Ass’y if there
is a flaw.)
Air leak from piping joints. Reconnect piping.
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9. Spare Parts List
 IL201
IL211
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Part number Part name Material Quantity
29030－1 Diaphragm Ass’y NBR 1
29038 Diaphragm NBR 1
290311#1 Valve BRASS 1
JIS B 2401, P21 “O” ring NBR 2
JIS B 2401, P8 “O” ring NBR 2
JIS B 2401, P5 “O” ring NBR 1
JIS B 2401, P3 “O” ring NBR 2
Part number Part name Material Quantity
29030－1 Diaphragm Ass’y NBR 1
29038 Diaphragm NBR 1
290311#1 Valve BRASS 1
JIS B 2401, P21 “O” ring NBR 1
JIS B 2401, P8 “O” ring NBR 1
JIS B 2401, P5 “O” ring NBR 1
JIS B 2401, P3 “O” ring NBR 2

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Revision
A Format change and content review
B Drawings update
4-14-1, Sotokanda, Chiyoda-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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