SMC Networks SJ2000 Series User manual

Doc. No.SJ2000-OMM0001
4 Port Solenoid Valve
PRODUCT NAM
SJ2000/3000 Series
MOD L/ Series

SJ2000-OMM0001
Contents
Safety Instructions ---------------------------------------------------------------------------- 2, 3
Precautions on Design / Selection ------------------------------------------------------- 4, 5
Mounting ---------------------------------------------------------------------------------------- 6
Piping -------------------------------------------------------------------------------------------- 6
Wiring -------------------------------------------------------------------------------------------- 6
Lubrication -------------------------------------------------------------------------------------- 6
Air Supply --------------------------------------------------------------------------------------- 7
Operating nvironment ---------------------------------------------------------------------- 7
Maintenance ------------------------------------------------------------------------------------ 7
Specific Product Precautions --------------------------------------------------------------- 8 to 13
Troubleshooting -------------------------------------------------------------------------------- 14
Remedy ------------------------------------------------------------------------------------------ 15
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SJ2000-OMM0001
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),
Japan Industrial Standards (JIS)*1) and other safety regulations*2)
*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
JIS B 8370: General rules for pneumatic equipment
JIS B 8361: General rules for hydraulic equipment
JIS B 9960-1: Safety of machinery – Electrical equipment for machines (Part 1: General requirements)
JIS B 8433-1993: Manipulating industrial robots - Safety etc
*2) Labor Safety and Sanitation Law, etc
Caution
Operator error could result in injury or equipment damage
Warning
Operator error could result in serious injury or loss of life
Danger
In extreme conditions, there is a possibility of serious injury or loss of life
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. nly personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly
The assembly, operation and maintenance of machines or 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.
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
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
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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SJ2000-OMM0001
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
The warranty period of the product is 1 year in service or 1.5 years after the product is delivered.*3)
Also, the product may have specified durability, running distance or replacement parts. Please
consult your nearest sales branch.
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.
Prior to using SMC products, please read and understand the warranty terms and disclaimers noted
in the specified catalog for the particular products.
*3)
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
When the product is exported, strictly follow the laws required by the Ministry of Economy, Trade and
Industry (Foreign Exchange and Foreign Trade Control Law)

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SJ2000-OMM0001
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 (cover installation or approach
prohibition to prevent potential danger caused by actuator
operation.
3. Intermediate stops
For 3-position closed center type, it is difficult to make a piston
stop at the required position accurately due to the
compressibility of air.
Furthermore, since valves and cylinders 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 ack pressure
When the air operated valve or single acting cylinder is
operated, they may malfunction due to the exhaustion of other
actuator. If back pressure is possible to be present, use the
valve with back pressure prevention valve, or use air SUP./EXH.
block assembly and EXH. block disk to divide air exhaustion.
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 suita le 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 purposes install a system for releasing
residual pressure. Especially in the case of 3-position closed
center valve type, 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. Dou le solenoid type
When using the double solenoid type for 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 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.
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. 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 the valve with a power saving circuit. 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 the
temperature will be high when a 3 station manifold.
13. Do not disassem le the product or make any
modifications, including additional machining.
It may cause human injury and/or an accident.
1. Momentary energization
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.
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 the rated voltage.
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.
Warning
SJ2000/3000 Series
Precautions for 4 Port Solenoid Valve ①
①①
①
Be sure to read efore handling.
Caution

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SJ2000-OMM0001
Design / Selection
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
o
C. Take appropriate measures to avoid freezing of
drainage, moisture etc. in low temperature.
6. Operation for air lowing
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 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 free.
Caution
SJ2000/3000 Series
Precautions for 4 Port Solenoid Valve ②
②②
②
Be sure to read efore handling.

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SJ2000-OMM0001
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
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. Preparation efore 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.
2. 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 ridge exposed at the
end of the threads.
3. Closed center types
For closed center type, check the piping to prevent air leakage
from the piping between the valve and the cylinder.
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
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 0.5 N･m.
2) 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.
(2 Follow the procedure of the manufacture when fittings other
than SMC is used.
5. Piping to products
When piping to a product, refer to the operation manual to 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 made 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.
Lu rication
Lu rication
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.
SJ2000/3000 Series
Precautions for 4 Port Solenoid Valve ③
③③
③
Be sure to read efore handling.
Warning
Caution
Caution
Warning

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SJ2000-OMM0001
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 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 lu rication properties in side the
equipment may occur, resulting in reduced relia ility
(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 ㎛ or smaller.
3. Take measures to ensure air quality, such as y
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 car on 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 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. Do not use in an environment where flamma le gas
or explosive gas exists. Usage may cause a fire or
explosion. The products do not have an explosion
proof construction.
3. Do not use in a place su ject to heavy vi ration
and/or shock.
4. The valve should not e exposed to prolonged
sunlight. Use a protective cover.
5. Remove any sources of excessive heat.
6. If it is used in an environment where there is
possi le contact with oil, weld spatter, etc., exercise
preventive measures.
7. When the solenoid valve is mounted in a control
panel or its energized for a long time, make sure
am ient temperatures is within the 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.
For 3-position closed center type, 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.
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.
1. Drain flushing
Remove drainage from the air filters regularly.
2. Lu rication
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 ,
ISOVG32.
SJ2000/3000 Series
Precautions for 4 Port Solenoid Valve ④
④④
④
Be sure to read efore handling.
Warning
Caution
Warning
Warning
Caution

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SJ2000-OMM0001
Manual Override Switch Operation
For manual override operation, move the manual override switch to a
position where letters A and B can e seen. [Manual override switch
release status (refer to the figure elow)] Operation with the manual
override switch in a locked status can cause damage to the manual
override and air leakage, so e sure to release the manual override
switch efore use. After manual override operation, lock the manual
switch for use (when the manual override of the push-turn locking
slotted type is locked, a manual override switch cannot e locked).
Manual Override Operation
When the manual override is operated, connected equipment will
e actuated. Confirm safety efore operating.
￭ Non-locking push type
Press in the direction of the arrow.
￭ Push-turn locking slotted type
While pressing, turn in the direction of the arrow (90
o
clockwise).
When you operate the D type with a screwdriver, turn it gently
using a watchmaker’s screwdriver. [Torque: under 0.05 N･m]
When you lock the manual override of the D type, e sure to push
it efore turning. [Load: 10 N or less] Turning without pushing can
cause damage to the manual override and trou le such as air
leakage, etc.
Valve with Switch
When turning off the valve using the switch, move it to the position
where the valve is locked. If the switch is at an improper position
and is energized, equipment connected to the valve could e
actuated.
Also, if the switch is turned OFF on the valve in the energized
state, e careful ecause any actuators connected to a single
solenoid, a dual 3 port valve or a 3 position valve will actuate.
Electric circuit diagram
(with positive common and light/surge voltage suppressor
Please connect it together with the polarity of the electric wiring of
the manifold.
Valves with uilt-in ack pressure check valve is to protect the
ack pressure inside a valve. For this reason, use caution the
valves with external pilot specification cannot e pressurized
from exhaust port [3/5 (E)].
As compared with the types which do not integrate the ack
pressure check valve, C value of the flow characteristics goes
down. For details, please contact SMC.
Exhaust Restriction
Since the SJ series 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.
Built-in Back Pressure Check Valve Type
Warning
Caution
Enlarged view of
manual override part
SJ2000:Hole diameter
φ
2.9
SJ3000:Hole diameter φ3.4
SJ2000/3000 Series
Specific Product Precautions 1
Be sure to read before handling.
Normal operation: The valve is
switched according to electric
signals from the connector on
the manifold side.
Warning
Manual override switch
unlocked status
Manual override switch
Slide direction
Manual override switch
locked status
Warning
Enlarged view of
manual override part
Caution
The valve coil is kept in a
deenergized state even
when there is an electric
signal from the connector on
the manifold side.
Caution
Manual override switch
Manual override
for solenoid A
Blue
Manual override
for solenoid B
Yellow
Solenoid A
Solenoid B
Manual override
for solenoid B
Yellow
Manual override
for solenoid A
Blue
Manual override switch
Solenoid A
Solenoid B

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SJ2000-OMM0001
When Using a 4 Port Valve as a 3 Port Valve
￭ When using a 4 port valve as a 3 port valve
The SJ2000/3000 series can e used as normally closed (N.C.) or
normally open (N.O.) 3 port valves y plugging one of the cylinder
ports 4(A) or 2(B). However, exhaust ports should e left open.
It is convenient when a dou le solenoid 3 port valve is required.
Light/surge Voltage Suppressor
￭ Non-polar type
￭ Polar type
￭ With power saving circuit
Compared to the standard products, power consumption is
reduced down to approx. 1/3 (in case of SJ360T) y cutting the
unnecessary wattage required to hold the valve in an energized
state. (Effective energizing time is over 67 ms at 24 VDC.)
- When a power saving circuit is installed, a diode to prevent
reverse current is not availa le for 12 VDC spec. Therefore, use
caution not to connect in reverse.
- Be careful a out the allowa le voltage fluctuation since a voltage
drop of a out 0.5 V occurs due to a transistor. (Refer to the
solenoid specifications of each valve for details.)
Light Indication
When equipped with light/surge voltage suppressor, the light
window turns orange when solenoid A is energized, and it turns
green when solenoid B is energized.
Continuous Duty
SJ2000/3000 Series
Specific Product Precautions 2
Be sure to read before handling.
Double solenoid, 3 position type Single solenoid
Electric circuit diagram (with power saving circuit
In case of single solenoid
Caution
Caution
Caution
Caution
Single solenoid Double solenoid, 3 position type

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SJ2000-OMM0001
Changing the Connector Entry Direction
To change the connector’s entry direction, set the switch on the
top of the connector lock to the FREE position, efore turning
the connector. Make sure to set the switch ack to the LOCK
position efore connecting the connector. (When the switch is
difficult to slide, move the connector a little so that it will slide
easier.)
If an excessive force is applied on the connector in the LOCK
position, the connector lock may e damaged. Also, using in
such a way that the connector floats in the FREE position, it may
cause the lead wire, etc. to reak. Thus, refrain from using in
these ways.
Manifold Mounting
When attaching a manifold to a mounting surface, etc., with olts,
if the entire ottom surface of the DIN rail contacts the mounting
surface in a horizontal mounting, it can e used y simply
securing oth ends of the DIN rail. However, for any other
mounting method or for side facing and rear facing, etc., secure
the DIN rail with olts at uniform intervals using the following as a
guide: 2 to 5 stations at 2 locations, 6 to 10 stations at 3 locations,
11 to 15 stations at 4 locations, 16 to 20 stations at 5 locations, 21
to 25 stations at 6 locations, 26 to 30 stations at 7 locations and
more than 30 stations at 8 locations.
In addition, even in the case of a horizontal mounting, if the
mounting surface is su ject to vi ration, etc., take the same
measures indicated a ove. If secured at fewer than the specified
num er of locations, warping or twisting may occur in the DIN rail
and manifold, causing trou le such as air leakage.
Fitting Assembly Replacement
By replacing a valve’s fitting assem ly, it is possi le to change the
port size of the 4(A), 2(B), 1(P), and 3/5(E) ports. When replacing
it, pull out the fitting assem ly after removing the clip with a flat
heat screwdriver, etc. To mount a new fitting assem ly, insert it
into place and then fully reinsert the clip.
Note 1) To change the port size of the 1(P), 3/5(E) ports into the
port sizes other than φ8 (straight), specify the change y
means of the manifold specification sheet.
Note 2) Be careful to avoid damage or contamination to the O-rigs,
as this can cause air leakage.
Note 3) When removing a straight-type fitting assem ly from a
valve, after removing the clip, attach tu ing or a plug
(KJP-02, KQ2P-) to the one-touch fitting, and pull it
out while holding the tubing or plug. If it is pulled out
while holding the release button of the fitting assembly
(resin part), the release button may be damaged.
Note 4) Be sure to turn off the power and stop the supply of air
before disassembly. Furthermore, since air may remain
inside the actuator, piping and manifold, confirm that the
air is completely exhausted before starting any work.
Note 5) While inserting a tubing into an elbow-type fitting
assembly, hold the main body of the assembly by hand.
Failure to do so will exert an undue force on the valve or
the fitting assembly, resulting in air leakage or damage.
FREE
LOCK
SJ2000/3000 Series
Specific Product Precautions 3
Be sure to read before handling.
Caution Caution

- 11 -
SJ2000-OMM0001
One-touch Fittings
The pitch of the SJ series piping ports (A, B etc.) has een set
assuming the use of KJ series one-touch fittings. Therefore, when
using fittings with an M3 or M5 port lock assem ly, there may e
some interference etween fittings, depending on the type and
size, so please use after checking dimensions in the catalog for
the pipe fitting eing used.
1. Tube attachment/detachment for one-touch fittings
1) Attaching of tu ing
(1) Take a tu e having no flaws on its periphery and cut it off
at a right angle. When cutting the tu e, use tu e cutters
TK-1, 2 or 3. Do not use pinchers, nippers or scissors, etc.
If cutting is done with tools other than tu e cutters, there
is the danger that the tu e may e cut diagonally or
ecome flattened, etc., making a secure installation
impossi le, and causing pro lems such as the tu e
pulling out after installation or air leakage,
(2) Grasp the tu e and push it in slowly, inserting it securely
all the way into the fitting.
(3) After inserting the tu e, 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 pro lems such as air
leakage or the tu e pulling out.
2) Detaching of tu ing
(1) The 4(A) and 2(B) ports use the KJ series, so the tu e can
e removed y pressing on part of the release ush.
However, for the 1(P) and 3/5(E) ports, please press the
release ush evenly as efore.
Hold down part of the release bush with your finger
or a similar tool, as shown in the diagram, and pull
out in the direction by the arrow.
(2) Pull out the tu e while holding down the release utton so
that it does not come out. If the release utton is not
pressed down sufficiently, there will e increased ite on
the tu e and it will ecome more difficult to pull it out.
(3) When the removed tu e is to e used again, cut off the
portion which has een chewed efore reusing it. If the
chewed portion of the tu e is used as is, this can cause
trou le such as air leakage or difficulty in removing the
tu e.
Other Tubing Brands
1. When using tube other than SMC brand, confirm the
following specifications are satisfied with respect to
the outside diameter tolerance of the tube.
1) Nylon tu ing within +/-0.1mm
2) Soft nylon tu ing within +/-0.1mm
3) Polyurethane tu ing within +0.15mm, within -0.2mm
Do not use tu ing which does not meet these outside diameter
tolerances. It may not e possi le to connect them, or they may
cause other trou les, such as air leakage or the tu e pulling out
after connection.
3/5(E) port
2(B) port
4(A) port
SJ2000/3000 Series
Specific Product Precautions 4
Be sure to read before handling.
Caution
Caution
1(P) port

- 12 -
SJ2000-OMM0001
How to Use Plug Connector
When attaching and detaching a connector, first shut off the
electric power and the air supply.
Also, crimp the lead wires and sockets securely.
1. Attaching and detaching connectors
- To attach a connector, hold the lever and connector unit
etween your fingers and insert straight onto the pins of the
solenoid valve so that the lever’s pawl is pushed into the
groove and locks.
- To detach a connector, remove the pawl from the groove y
pushing the lever downward with your thum , and pull the
connector straight out.
2. Crimping of lead wires and sockets
Peel 3.2 to 3.7 mm of the tip of lead wire, enter the core wires
neatly into a socket and crimp it with a special crimp tool. Be
careful so that the cover of lead wire does not enter into the
crimping part. (Crimping tool: Model no. DXT170-75-1)
3. Attaching and detaching lead wires with sockets
- Attaching
Insert the sockets into the square holes of the connector (with A,
B, C, and N indication), and continue to push the sockets all the
way in until the lock y hooking into the seats in the connector.
(When they are pushed in, their hooks open and they are locked
automatically.) Next, confirm that they are locked y pulling lightly
on the lead wires.
- Detaching
To detach a socket from a connector, pull out the lead wire
while pressing the socket’s hook with a stick having a thin tip
(approx. 1 mm). If the socket is used again, spread the hook
outward.
Plug connector lead wires have a standard length of 300 mm,
however, the following lengths are also availa le.
Single solenoid Double solenoid,
3 position type, 4 position type
SJ3000-46-S-

 SJ3000-46-D-


Lead wire length
For single solenoid: SJ3000-46-S-
For dou le solenoid
For 3 position type : SJ3000-46-D-
For 4 position type
For dou le solenoid
Without lead wire : SJ3000-46-S-N
(Connector, Socket x 2 pcs. only)
For dou le solenoid
Without lead wire : SJ3000-46-D-N
(Connector, Socket x 3 pcs. only)
How to Order
Include the connector assem ly part num er together with the
part num er for the plug connector’s solenoid valve without
connector.
(Example) Lead wire length 2000 mm
SJ3160-5MOZ-C6
SJ3000-46-S-20
Plug Connector Lead Wire Length
Connector Assembly Part No.
SJ2000/3000 Series
Specific Product Precautions 5
Be sure to read before handling.
Nil 300 mm
6 600 mm
10 1000 mm
15 1500 mm
20 2000 mm
25 2500 mm
30 3000 mm
50 5000 mm
Single solenoid
Caution
Caution
Double solenoid
0.2 to 0.33mm
2
Max. cover diameter: φ1.7mm

- 13 -
SJ2000-OMM0001
Connector Assembly for Manifolds (for Junction Common
Using the connector assem ly (for junction common) for solenoid
valves installed in the manifold reduces the la or involved in
wiring work ecause common wiring for all solenoid valves is
integrated into a single wire.
Single solenoid Double solenoid,
3 position type, 4 position type
SJ3000-46-SC-

 SJ3000-46-DC-


Lead wire length
For single solenoid: SJ3000-46-SC-
For dou le solenoid
For 3 position type : SJ3000-46-DC-
For 4 position type
How to Order
Indicate the part no. of the connector assem ly for the manifold
and solenoid valve.
If the arrangement is complicated, please specify them y means
of the manifold specification sheet.
Note 1) Applications like connectors not wired to a valve is not possi le.
Note 2) For the solenoid valve, please designate “No connector
(MOZ)” for the connector type.
Note 3) Connector assem ly with lead wire for place where the
signals are transmitted to the common wiring. (Only the
valves of first station and/or last station of manifold are
compati le to connector with lead wire for common.)
(Example)
SS5J3-60-04U ------- 1set
∗SJ3160N-5MOZ ----- 2sets
∗SJ3260N-5MOZ ----- 2sets
∗SJ3000-46-S --------- 1set (Connector assem ly for single solenoid)
∗SJ3000-46-SC ------- 1set (Connector assem ly for single solenoid)
(for junction common)
∗SJ3000-46-DC ------- 2sets (Connector assem ly for dou le solenoid)
(for junction common)
The asterisk denotes the sym ol for assem ly. Prefix it to the
part nos. of the solenoid valve, etc.
Wiring Instructions for Connector Assembly (for Junction Common
If only connector assem ly (for junction common) is ordered,
please wire according to the instructions in the diagram elow.
For details on socket mounting, please refer to “How to Use Plug
Connector” on the ack page 12.
Wire connection instructions
1. Strip 6.5 to 7.5 mm from the tip of the lead wire.
2. Loosen the terminal screws (slotted screws of the
power supply terminal connectors, plug the core
wire of the lead wire into the square holes of the
connector, tighten terminal screws at the proper
torque, and fasten them securely. (Gently pull the
lead wire and check that it is fastened.
Precautions
- To remove the power supply terminal connector, pull it upward
as is. When mounting, push it in until it makes a snapping noise.
- When connecting wire, e careful ecause using lead wire that
is outside of compati le lead wire ranges, or that are tightened
to anything other than the proper torque, creates a risk of
defective contact and other pro lems.
Connector Assembly Part No.(for Junction Common
How to Wire to PC Wiring System Compliant Power Supply Terminal
For junction common
Connector assem ly
SJ3000
-
46
-
S
Connector assem ly
(for junction common)
SJ3000-46-SC
Dou le solenoid
SJ3260N-5MOZ
Common wiring
SJ2000/3000 Series
Specific Product Precautions 6
Be sure to read before handling.
Common wiring
Socket
Insert the socket into the connector (N)
of the neigh oring solenoid valve
Caution
Caution
Nil 300 mm
6 600 mm
10 1000 mm
15 1500 mm
20 2000 mm
25 2500 mm
30 3000 mm
50 5000 mm
Caution
Connector assem ly
(for junction common)
SJ3000-46-DC
Single solenoid
SJ3160N-5MOZ

- 14 -
SJ2000-OMM0001
TROUBLESHOOTING
Leakage Air leaks through exhaust
port of main valve
Air leaks through pilot
exhaust port of pilot valve
Foreign matter aught in ore of pilot valve
④
⑨
⑤
⑥
⑩
④
Foreign matter aught in air seat of pilot valve
Foreign matter aught in ore of pilot valve
Air leaks through gasket Insuffi ient bolt tightening
Foreign matter aught in armature
Coil splashed by water
Burnt oil
Intrusion of foreign matter
Spool has not ompletely shifted
Foreign matter aught in air seat of pilot valve
①
②
③
④
Ex essive amount of lubri ant
Higher voltage or wrong oil used ⑦
⑤
⑥
Faulty wiring
Poor onta t at onta tor wire or onne tion part
Blown fuse or dis onne tion lead wire
Poor seal on a tuator ( ylinders, et .) side
Faulty operation Pilot valve is not operated
Though pilot valve does
shift, but main valve will not
shift or will be sluggish.
Dis onne tion oil wire
⑪
Should any trouble be found during operation, tra e the sour e of the trouble in the following order and take orre tive a tion.
Trouble phenomenon Cause expe ted Remedy
⑧
Fall of pilot pressure
Swelled out " spool ass'y " ring
Abrasion "spool ass'y" ring
⑫

- 15 -
SJ2000-OMM0001
Remedy
Repla e part.
Re-wire orre tly.
was arried out ex luding above-mentioned.
Repla e valve.
Repla e part or re-wire positively.
Repair or repla e a tuators.
After stopping air and re-tighten the bolts.
⑫
⑦
In addition, in the ase of trouble, please send it ba k to the supplier for repair or repla ement.
1. Voltage out of rated voltage has been used.
If no improvement is a hieved in spite of the above ountermeasure, inside of the valve may have some
abnomality. In this ase, stop using the valve immediately.
If any of followings are arried out, inside of the valve may have some failure. In this ase, stop using
the valve immediately.
2. Oil other than the spe ified one has been lubri ated.
7. Prohibited way of using the valve whi h is written at "Pre autions" se tion in this operation manual
3. Lubri ation has been stopped intermediately, or lubri ation was suspended temporary.
4. Water splashed dire tely.
5. Strong impa t was given.
6. Alien substan e su h as drain and parti le got into. Drain or garbage invaded a valve.
Redu e the amount of lubri ant to the degree that no oil splashes out of the air exhaust port (E port).
Che k voltage. Repla e valve (pilot valve).
⑨
⑧Prote t the valve so that water does not splash the oil. Repla e valve (pilot valve).
In ase of intrusion of foreign matter, to remove foreign matter by air blow of piping and then repla e
valve.
⑩
⑪
⑤
⑥
･When a large quantity of drain is given and annot arry out drain omission surely, install either an
auto-drain or a dryer.The valve should be repla ed.
･If wrong oil is used, ompletely air blow to remove oil, and repla e valve. After valve is repla ed,
use turbine oil lass 1 (ISO VG32).
Regulate pressure so that pilot pressure will fall within operating pressure range during operation.
No. Remedy
③
②
①
④

SJ2000-OMM0001
Record of changes
1st printing MY
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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