SMC Networks IR3000-A User manual

Document No. IR-OM00015
PRODUCT NAME
Precision Regulator
MODEL / Series / Product Number
IR300(0, 1, 2)-A
IR301(0, 1, 2)-A
IR302(0, 1, 2)-A

Contents
SafetyInstructions 2to6
1.Application 7
2.Specifications 7
3. Construction and Operation Principles 8
4.Howtoorder 9
5. Bracket, gauge and switch assembly (optional) 10
6. Panel mounting 11
7. Troubleshooting 12
8.Dimensions 13 to 14
-1-

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.
-2-

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.
LimitedwarrantyandDisclaimer
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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①Do not use in an atmosphere containing corrosive gases, chemicals, organic solvent, sea
water, water, water steam, or where there is direct contact with any of these.
②Do not operate in environments subject to heavy vibration and/or impact.
③The regulator should not be exposed to prolonged sunlight. If used in direct sunlight, a
protective cover should be used.
④Do not install close to heat sources. If installed, protect the product against radiated heat from
source adequately.
⑤Install suitable protective measures in locations where there is contact with water drop- lets,
oil or welding spatter, etc.
①Do not use a precision regulator outside of the range of its specifications as this can cause
failure.
②Be sure to confirm the port indication when installing the product.
③When mounting the bracket or tightening the hexagon panel nut on the panel, tighten them to
the recommended tightening torque.
Insufficient tightening torque can cause loose piping. Excessive tightening torque can cause thread
damage.
Recommended tightening torque [N-m]
Set nut (for bracket) 1.8 to 2.2
Hexagon panel net (handle type only) 3 to 4
④After pressure adjustment, be sure to tighten the lock nut. When tightening the nut, tighten so
that the handle does not move due to friction caused by tightening.
⑤When pressure is applied to the inlet of a regulator, make sure that the outlet port is connected
to the circuit. Air blow occurs from the outlet and it depends on the operating conditions.
⑥The set pressure may vary depending on the elapsed time and change in ambient temperature
after pressure setting. If the setting value varies, adjust with the handle.
⑦If the directional control valve (solenoid valve, mechanical valve etc.) is mounted and ON-OFF
is repeated for a long time, the set pressure may vary. If the setting value varies, adjust with
the handle.
⑧There may be pulsation or noise depending on the pressure conditions, piping conditions and
ambient environment. In this case, it is possible to improve the problem by changing the
pressure conditions and piping conditions.
If the problem is not improved, contact your SMC sales representative.
⑨There is no connection thread on the exhaust port. If it is necessary to mount a silencer to the
exhaust port, please contact your SMC sales representative.
⑩ When a pressure gauge is mounted to the regulator, please do not exceed the maximum
display pressure. It may lead to a malfunction.
⑪ A safety device needs to be installed if output pressure is exceeding the set pressure,
otherwise this can cause the breakage of outlet device and equipment or malfunction.
Handling Precautions
Caution
-4-
Operating Environment
Warning

①Connect piping/fittings using the recommended torque while holding the product tightly.
Looseness or faulty sealing will occur if tightening torque is insufficient, while thread damage will result
if the torque is excessive. Furthermore, if the side with the female threads is not held while tightening,
excessive force will be applied directly to piping brackets, etc. causing damage or other problems.
Recommended tightening torque [N-m]
Thread 1/4 3/8 1/2
IN OUT port 12 to 14 22 to 24 28 to 30
EXH port - - 8 to 10
②Do not apply any additional twisting, or bending moments except for the weight of the filter
regulator itself.
Provide separate support for external piping, as damage may otherwise occur.
③Non-flexible piping materials such as steel piping will be subject to excessive moment load
and vibration from the piping side, so use a flexible tube for intermediate connections.
①Preparation 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.
②Wrapping of sealant tape
When screwing piping or fittings into ports, ensure that metal chips from the pipe threads or sealing
material do not enter the piping.
Furthermore, when pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads.
Piping
Caution
-5-
Warning

①When the precision regulator with pressure gauge is used, do not apply impact to the product
by dropping it etc. during transportation or installation.
This may cause misalignment of the pressure gauge pointer.
①The operating fluid must be compressed air. Contact SMC if using the product with other fluids.
②Do not use compressed air that contains chemicals, synthetic oils including organic solvents,
salts or corrosive gases etc., as this can cause damage or malfunction.
③If condensate in the drain bowl is not emptied on a regular basis, the bowl will overflow and
allow the condensate to enter the outlet side. This will cause a malfunction of pneumatic
equipment downstream of regulator.
If the drain bowl is difficult to check and remove, installation of a drain bowl with an auto drain option is
recommended.
①Condensate or dust, etc. in the supply pressure line can cause malfunctions. Please use an air
filter (SMC series AF etc.) or mist separator (SMC AM, AFM series).
Refer to “Air Preparation Equipment Model Selection Guide” (Best Pneumatics No. 5) for model
selection based on air quality.
②When a lubricator is used at the supply side of the product, it can cause malfunctions. Do not
use a lubricator at the supply side of the product.
If lubrication is required for terminal devices, connect a lubricator on the output side of the regulator.
①When the product is removed for maintenance, reduce the set pressure to zero and shut off the
supply pressure completely beforehand.
②When connecting an additional pressure gauge, the set pressure should be reduced to zero
before removing the plug.
③When using the regulator between a solenoid valve and an actuator, check the pressure gauge
periodically.
Sudden pressure fluctuations may shorten the durability of the pressure gauge. A digital pressure
gauge is recommended for such situation applications or as deemed necessary.
Air Supply
Maintenance
Handling
Caution
Caution
-6-
Warning
Warning

１． Application
This instrument aims at controlling pressure of air lines.
２． Specifications
Model IR300(0,1,2)-A IR301(0,1,2)-A IR302(0,1,2)-A
Max. supply pressure
[ MPa] 1.0
Min. supply pressure
[MPa](Note 1) Set pressure + 0.1
Set pressure range
[MPa] 0.01 to 0.2 0.01 to 0.4 0.01 to 0.8
Sensitivity (Note 2)within 0.2% of the full span (F.S.)
Repeatability (Note 3) (Note 2)within +/- 0.5% of the full span (F.S.)
Air consumption(Note 4)
[L/min(ANR)]
1.0 or less
[Measuring conditions: supply pressure 1.0 MPa, set pressure 0.2 MPa]
Ambient temp. and
Fluid temperature
[OC]
Standard product: -5 to 60
With digital pressure switch: 0 to 50
(No freezing)
Port size 1/4 to 1/2
Pressure gauge port
size 1/8 [2 ports]
Weight [kg] （Note 5)0.23
(Note 1) When there is no flow rate on the outlet side. Maintain the minimum supply pressure
(set pressure + 0.1MPa).
(Note 2) Full span indicates the maximum set pressure of the product. (e.g.IR3000-A: 0.2MPa)
(Note 3) Other characteristics such as aging deterioration and temperature characteristics are not
included.
(Note 4) Air is released to atmosphere all the times.
(Note 5) Excluding accessories.
-7-

３． Construction and Operation Principles
When the knob is rotated, the flapper is pushed through the spring, and a gap is generated
between the nozzle and flapper. The supply pressure flows to the inlet passes through the path
between the nozzle and flapper and acts on the supply / exhaust diaphragm as nozzle pressure.
The force generated by the diaphragm pushes down the valve, and the supply pressure flows to
the outlet. The discharged air pressure acts on the static pressure chamber side of the supply/
exhaust diaphragm, and counteracts against the force generated by the nozzle back pressure
chamber side. The air pressure acts on the nozzle diaphragm at the same time, and counteracts
against the compression force of the adjusting spring to adjust the set pressure. When the set
pressure increases too much, the nozzle diaphragm is pushed up, and a gap is generated
between the flapper and nozzle diaphragm. This happens after the flapper closes. The balance
of the supply/exhaust diaphragm is lost when the nozzle back pressure flows to the outlet. The
exhaust valve is open after the valve is closed, and excess pressure on the outlet is released to the
air. Due to this pilot mechanism, fine pressure variations are detected and precise pressure
adjustment is possible.
Component parts
No. Description Materials
① Bonnet Aluminum die-cast
② Nozzle diaphragm assembly Aluminum, Weather resistant NBR
③ Seal HNBR
④ Seal NBR
⑤ Diaphragm spacer Polyacetal
⑥ Supply / Exhaust diaphragm assembly Aluminum, Weather resistant NBR
⑦ Valve assembly Aluminum, HNBR
⑧ Body Aluminum die-cast
Grease: lithium grease
Adjusting spring
knob
Nozzle diaphragm
Nozzle
Valve
⑥
Supply/exhaust
diaphragm Flapper
Inlet (IN) Outlet (OUT)
IN / OUT side
-8-
①
②
⑧
⑤
③
⑦④④
Static pressure
chamber
Nozzle back pressure
chamber
A
A

４． How to order
Symbol Description
・Option/Semi-standard: Select one each for 'a' to 'f'.
・Option/Semi-standard symbol : When more than one
specification is inqures, indicate in alphanumeric
order.
①Set pressure range
00.01 to 0.2MPa
10.01 to 0.4MPa
20.01 to 0.8MPa
+
0Bottom exhaust
+
Back exhaust
②Exhaust direction
③Thread type
Nil Rc
NNPT
FG
+
02 1/4
+
03 3/8
⑤
a Mounting
Nil Without mounting accessories
BWith bracket
Options
HWith hexagon panel nut (for panel mounting)
+
b Pressure gauge Nil Without pressure gauge
GRound type pressure gauge
cWith digital pressure
switch
EA NPN open collector 1 output
(Note1)
EB PNP open collector 1 output
1Front exhaust
2
04 1/2
④Port size
Note1) These parts are shipped together with the product, but not assembled.
Note1) Both options B and H cannot be included in one part number.
Note1) The bracket for IR3000 series is not compatibile with IR3000-A series
Note 2) See pressure unit table below.
Note 3) Available only for screw type NPT.
Note 4) Options EA, EB, EC and ED are applicable.
Note 5) The product with SI unit will be sold in Japan in accordance with the New measurement law.
⑤
cWith digital pressure
switch
(Note1)
EB PNP open collector 1 output
EC NPN open collector 1 output + analog voltage output
ED NPN open collector 1 output + analog current output
+
⑥Semi-standard
d Flow direction Nil Flow direction: Left to right
RFlow direction: Right to left
+
e Knob Nil Upward
VDownward
fPressure unit
(Note 2)
Nil
Name plate and pressure gauge in SI units: MPa
Z
Name plate and pressure gauge in imperial units: psi
ZA Digital Pressure Switch (with unit conversion function)
Thread
type
Units on
name plate
Units on pressure gauge
Availability
(Note 5)
G EA, EB, EC, ED
Nil
Rc
MPa MPa MPa Japan, OverseasNPT
G
-With unit
conversion function
Z
(Note3)
Rc---
NPT psi psi
G---
Overseas only
With unit conversion
function
[Initial value psi]
+
Overseas onlyNPT
G
ZA
(Note 4)
Rc
MPa
IR 0 0 ― 04
1
BG ― ― A
3 4 5 6
2
23
-9-

５． Bracket, gauge and switch assembly (optional)
1. Bracket 1) Installation of bracket
Mount the bracket to the regulator as shown on the picture.
Assemble so that the regulator and rotation stopper of the
bracket align properly.
2) Holding with the set nut
Insert the set nut into the bonnet of the regulator so that the
knurled tool face of the set nut will face the upper surface of
the bracket.
It is recommended that the set nut is tightened securely by
hand.
* When retightening
Please use hook spanner on hook groove of the set nut, and
tighten. Please follow the table below for hand tightening and
retightening.
Tool size [mm] Reference torque [N-m]
34/38 1.8 to 2.2
2. Round type pressure gauge, digital pressure switch
1) Instruction for mounting of the round type pressure
gauge and digital pressure switch
Confirm that sealant is applied to the round type pressure
gauge and digital pressure switch. Mount them into the
chosen pressure gauge connection port. Please refer to
"Piping" on page 5 when using sealant tape.
* Position adjustment of the round type pressure gauge
and digital pressure switch
Adjust the round type pressure gauge and digital pressure
switch by tightening the thread. Do not unscrew the gauge
as air leakage may occur.
* Position adjustment of the pressure gauge and digital
pressure switch on the back of the regulator
The pressure gauge connection port on the front of the
regulator with round type pressure gauge and digital
pressure switch is not plugged. When mounting the round
type pressure gauge or digital pressure switch on the back
of the regulator, please remove the plug on the back and
mount it at the front.
Part name Tools Tool size
[mm]
Recommended torque
[N-m]
Plug Hexagon wrench key 4 0.55 to 0.65
Round type pressure gauge Wrench 12 7 to 9
Digital pressure switch Wrench 12 7 to 9
Set nut
Bracket
Regulato
r
(Upper
surface of the
bracket)
(Knurled tool face)
(Bonnet thread)
(Rotation
stopper)
(Grooved)
Regulato
r
Plug
Round type
pressure gauge
Digital pressure switch
(Front pressure gauge
connection port)
(Rear pressure gauge connection port)
-10-

６．Panel mounting
1. Panel mounting 1) Handle removal
Remove the handle from the regulator.
2) Panel mounting
Insert the regulator into the panel.
3) Nut tightening
Adjust the regulator position and tighten the attached
hexagon panel nut.
Recommended tightening torque
Wrench size [mm] Tightening Torque[N-m]
17 3 to 4
4) Handle mounting
Mount the handle back onto the regulator.
* Excessive tightening of the handle may cause
excessive pressure on the outlet side when
supplying pressure.
* Recommended panel dimension
Panel hole diameter [mm] Panel thickness [mm]
φ12.5 4 or less
Handle
Hexagon panel nut
Panel
Regulator
-11-

7．Troubleshooting
No. Problem Possible causes Countermeasures
1 Reduction of the set pressure
Fluctuation of flow rate at the downstream side Set the pressure again.
Return the flow rate at the downstream side to the initial rate.
Moisture, condensate and foreign matter stuck to the
flapper. Install a filter and/or mist separator to clean the air supply.
Leakage due to deterioration of the
rubber part.
Ozone Use the ozone resistant product (80- series).
Temperature Avoid using at high temperature or low temperature.
Organic solvent
etc.
Take countermeasures to prevent organic solvent from the ambient
atmosphere or fluid.
High frequency ON-OFF operation on the downstream
side. Set the pressure again.
Pressure in the bonnet is reduced. Release the pressure in the bonnet which is the reference pressure to
the atmosphere.
2 The set pressure increases or
decreases as time passes. Aging deterioration of the regulator Set the pressure again.
3 Slow response
Moisture, condensate and foreign matter stuck to
the nozzle and flapper. Install a filter or mist separator to clean the air supply.
Increase in the flow rate consumption on the
downstream side (such as leakage). Prevent the leakage from the piping.
4
Increased leakage from the
bonnet breathing hole and
exhaust port
Leakage due to deterioration of
the rubber part.
Ozone Use the ozone resistant product (80- series).
Temperature Avoid using at high temperature or low temperature.
Organic solvent
etc.
Take countermeasures to prevent organic solvent from the ambient
atmosphere or fluid.
Foreign matter caught in the seat Install a filter or mist separator to clean the air supply.
Perform flushing by releasing the downstream side to atmosphere.
5 The set pressure changes
periodically.
Supply pressure fluctuates. Install the regulator on the front to reduce the fluctuation.
Ambient temperature and fluid temperature change Take countermeasures to prevent temperature changes.
6 Pressure does not increase. Insufficient min. supply pressure Increase the supply pressure.
7 Repeatability accuracy is bad. Due to problem 1. Refer to problem 1.
Due to problem 2. Refer to problem 2.
8 Oscillation occurs.
Leakage from the downstream side. Prevent the leakage from the piping.
Downstream piping condition Oscillation occurs depending on the condition. In that case, please
contact your SMC sales representative.
9
There is leakage from the
ports other than the bonnet
breathing hole and exhaust
port.
Leakage due to deterioration of the rubber part. Consult SMC.
※ If any of the troubleshooting is not applicable, please contact your SMC sales representative.
-12-

8．Dimensions
8-1. Dimensions of the regulator with the bottom exhaust direction [IR30*0-A]
-13-

8-2. Dimensions of the regulator with the front or back exhaust direction [IR30*(1､2)-A].
-14-

Revision history
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.
© 2011 SMC Corporation All Rights Reserved