SMC Networks SJ4000 Series User manual

Doc. No. SJ2000-OMM0001-C
Solenoid Valve
PRODUCT NAME
SJ1000/2000/3000/4000 Series
MODEL/ Series

No. SJ2000-OMM0001-C
Contents
Contents ---------------------------------------------------------------------------------------------- 1
Safety Instructions ---------------------------------------------------------------------------------- 2,3
Design / Selection ----------------------------------------------------------------------------------- 4,5
Mounting -------------------------------------------------------------------------------------------- 5
Piping ------------------------------------------------------------------------------------------------ 6
Wiring ------------------------------------------------------------------------------------------------ 6
Lubrication ------------------------------------------------------------------------------------------ 6
Air Supply ---------------------------------------------------------------------------------------------- 6,7
Operating Environment ----------------------------------------------------------------------------- 7
Maintenance ------------------------------------------------------------------------------------------- 7
UL approved ---------------------------------------------------------------------------------------- 7
Valve Construction ---------------------------------------------------------------------------------- 8 to 17
Specific Product Precautions --------------------------------------------------------------------- 18 to 24
Trouble shooting ----------------------------------------------------------------------------------- 25
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No. SJ2000-OMM0001-C
Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.”
They are all important notes for safety and must be followed in addition to International Standards
(ISO/IEC)*1) , and other safety regulations.
*1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
ISO 4413: Hydraulic fluid power -- General rules relating to systems.
IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements)
ISO 10218: Manipulating industrial robots -Safety.
etc.
Caution
Caution indicates a hazard with a low level of risk which, if not avoided, could result
in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk which, if not avoided, could
result in death or serious injury.
Danger
Danger indicates a hazard with a high level of risk which, if not avoided, will result
in death or serious injury.
Warning
1. The compatibility of the product is the responsibility of the person who designs the equipment or
decides its specifications.
Since the product specified here is used under various operating conditions, its compatibility with specific
equipment must be decided by the person who designs the equipment or decides its specifications based on
necessary analysis and test results.
The expected performance and safety assurance of the equipment will be the responsibility of the person who
has determined its compatibility with the product.
This person should also continuously review all specifications of the product referring to its latest catalog
information, with a view to giving due consideration to any possibility of equipment failure when configuring the
equipment.
2. Only personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment including our products must be
performed by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed.
1.The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed.
2.When the product is to be removed, confirm that the safety measures as mentioned above are implemented
and the power from any appropriate source is cut, and read and understand the specific product precautions
of all relevant products carefully.
3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the product is to
be used in any of the following conditions.
1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to
direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or
other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special safety
analysis.
4.Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a
mechanical protective function, and periodical checks to confirm proper operation.
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No. SJ2000-OMM0001-C
Safety Instructions
Caution
The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and exchange
specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements
The product used is subject to the following “Limited warranty and Disclaimer” and “Compliance
Requirements”.
Read and accept them before using the product.
Limited warranty and Disclaimer
1.The warranty period of the product is 1 year in service or 1.5 years after the product is
delivered,whichever is first.*2)
Also, the product may have specified durability, running distance or replacement parts. Please
consult your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our responsibility,
a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any other damage
incurred due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms and disclaimers
noted in the specified catalog for the particular products.
*2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum
pad or failure due to the deterioration of rubber material are not covered by the limited
warranty.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of weapons of mass
destruction(WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are governed by the
relevant security laws and regulation of the countries involved in the transaction. Prior to the
shipment of a SMC product to another country, assure that all local rules governing that export
are known and followed.
Caution
SMC products are not intended for use as instruments for legal metrology.
Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests
relevant to the metrology (measurement) laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the metrology
(measurement) laws of each country.
! Caution
SMC products are not intended for use as instruments for legal metrology.
Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests
relevant to the metrology (measurement) laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the metrology
(measurement) laws of each country.
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Design / Selection
1. Confirm the specifications
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 (such as the installation of a
cover or the restricting of access to the product) to prevent
potential danger caused by actuator operation.
3. Intermediate stops
For 3-position closed center, it is difficult to make a piston stop at
the required position accurately due to the compressibility of air.
Furthermore, since valves and 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 back pressure when using a manifold.
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 valve are subject to air leakage, they cannot be used
for applications such as holding pressure (including vacuum) in a
pressure vessel.
6. Not suitable for use as an emergency 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.
7. Release of residual pressure
For maintenance and inspection purposes install a system for
releasing residual pressure. Especially in the case of
3-position closed center valve, ensure that the residual pressure
between the valve and the cylinder is released.
8. Operation in a vacuum condition
When a valve is used for switching a vacuum, take measures to
install a suction filter or similar to prevent external dust or other
foreign matter from entering inside the valve.
In addition, at the time of vacuum adsorption, be sure to supply a
constant supply of vacuum. 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 valves and vacuum
release valves
If a non-vacuumvalve is installed in the middle of a piping system
that contains a vacuum, the vacuum condition will not be
maintained. Use a valve designed for use under vacuum
conditions.
10. Double 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 using a valve with
an N.O. (normally open) specification.
・For applications such as mounting a valve in a control panel,
take the measure to keep the temperature not to exceed valve
specification.
Please mind it especially in case energizing more than 3
adjacent stations in the same manifold for an extended period
of time or energizing bothA and B coil of dual 3 port valve for
an extended period of time.
13. Do not disassemble the product of make any
modifications, including additional machining.
Doing so may cause human injury and/or an accident.
14. Resumption after a long period of holding time
When resuming operation after a long period of holding time,
there are cases in which, regardless of whether the product
is in an ON or OFF state, there is a delay in the initial response
time due to adhesion.
Conducting several cycles of running-in operation will solve this
problem. Please consider implementing this before resumption.
1. Precautions for 2-position double solenoid
valves
If a double solenoid valve is operated with momentary
energization, it should be energized for at least 0.1 second.
However, depending on the piping conditions, the cylinder may
malfunction even when the double solenoid valve is energized
for 0.1 seconds or longer. In this case, energize the double
solenoid valve until the cylinder is exhausted completely.
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 as 3% or
less of the rated voltage.
SJ1000/2000/3000/4000 Series
Precautions for 4 Port Solenoid Valve 1
Be sure to read before handling. Refer to main text for detailed precautions on every series.

- 5 -No. SJ2000-OMM0001-C
Design / Selection
3. Surge voltage suppressor
1) The surge voltage suppressor built into the valve is intended to
protect the output contacts so that the surge generated inside
valve does not adversely affect the output contacts. Therefore, if
an overvoltage or overcurrent is received from an external
peripheral device, the surge voltage protection element inside the
valve is overloaded, causing the element to break. In the worst
case, the breakage causes the electric circuit to enter
short-circuit status. If energizing continues while in this state, a
large current flows. This may cause secondary damage to the
output circuit, external peripheral device, or valve, and may also
cause a fire. So, take appropriate protective measures, such as
the installation of an overcurrent protection circuit in the power
supply or a drive circuit to maintain a sufficient level of safety.
2) If a surge protection circuit contains nonstandard diodes, such
as Zener diodes or varistor, a residual voltage that is in
proportion to the protective circuit and the rated voltage will
remain. Therefore, take into consideration the surge voltage
protection of the controller. In the case of diodes, the residual
voltage is approximately 1V.
4. Surge voltage intrusion
With non-polar type solenoid valves, at times of sudden
interruption of the loading power supply, such as emergency
shutdown, surge voltage intrusionmay be generated from loading
equipment with a large capacity (power consumption), and a
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 low temperature conditions
It is possible to operate a valve in extreme temperatures, as low
as –10°C. Take appropriate measures to avoid the freezing of
drainage, moisture, etc., in low temperatures.
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 effect on the internal pilot type valve when
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 be energized when air is being
blown.
7. Mounting orientation
Mounting orientation is free.
8. Initial lubrication of main valve
The initial lubricant (Grease) has already been applied to the
main valve.
Please consult with SMC, as there are some standard valve
products that use fluorine grease for food processing equipment
(NSF H-1).
9. For the pilot EXH. (PE) port
If the solenoid valve and the manifold’s pilot EXH (PE) port is
restricted extremely or blocked, abnormal operation of the
solenoid valve may occur.
Mounting
1. Operation manual
Install the products and operate them only after reading the
operation manual carefully and understanding its contents. Also,
keep the manual where it can be referred to as necessary.
2. Ensure sufficient space for maintenance
activities.
When installing the products, allow access for maintenance and
inspection.
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.
SJ1000/2000/3000/4000 Series
Precautions for 4 Port Solenoid Valve 2
Be sure to read before handling. Refer to main text for detailed precautions on every series.

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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. Winding of sealant tape
When screwing piping or
fittings into ports, ensure that
chips from the pipe threads or
sealing material do not enter
the piping.
Also, if sealant tape is used,
leave 1 thread ridge exposed
at the end of the threads.
4. Closed center
For closed center, check the piping to prevent air leakage from
the piping between the valve and the cylinder.
5. Piping to products
When piping to a product, avoid mistakes regarding the supply
port, etc.
1) When using SMC’s M3 or M5 fittings, follow the procedures
below to tighten them.
•Connection thread: M3
First, tighten by hand, then use a suitable wrench to tighten
the hexagonal portion of the body an additional 1/4 turn. The
reference value for the tightening torque is 0.4 to 0.5 N·m.
•Connection thread: M5
First, tighten by hand, then use a suitable wrench to tighten
the hexagonal portion of the body an additional 1/6 to 1/4
turn. The reference value for the tightening torque is 1 to 1.5
N·m.
∗Excessive tightening may damage the thread portion or deform
the gasket and cause air leakage. Insufficient tightening may
loosen the threads or cause air leakage.
2) When using a fitting other than an SMC fitting, follow the
instructions given by the fitting manufacturer.
6. Piping to products
When piping to a product, refer to the operation manual to avoid
mistakes regarding the supply port, etc.
Wiring
1. The solenoid valve is an electrical product. For
safety, install an appropriate fuse and circuit
breaker before use.
1. 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 will 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.
4. External force applied to the lead wire
If an excessive force is applied to the lead wire, this may cause
faulty wiring. Take appropriate measures so that a force of 30 N
or more is not applied to the lead wire. When instructions are
given in the Specific Product Precautions, follow these
specifications.
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
additives), ISO VG32. For details about lubricant
manufacturers’ brands, refer to the SMC website. Additionally,
please contact SMC for details about class 2 turbine oil (with
additives) ISO VG32. Once lubricant is utilized within the
system, since the original lubricant applied within the product
during manufacturing will be washed away, please continue to
supply lubrication to the system. Without continued lubrication,
malfunctions could occur.
If turbine oil is used, refer to the Safety Data Sheet (SDS) of
the oil.
2. Lubrication amount
If the lubrication amount is excessive, the oil may accumulate
inside the pilot valve, causing malfunction or response delay. So,
do not apply a large amount of oil. When a large amount of oil
needs to be applied, use an external pilot type to put the supply
air on the pilot valve side in the non-lube state.
This prevents the accumulation of oil inside the pilot valve.
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 orcorrosive gasses, etc., as it can
cause damage or malfunction.
SJ1000/2000/3000/4000 Series
Precautions for 4 Port Solenoid Valve 3
Be sure to read before handling. Refer to main text for detailed precautions on every series.

- 7 -No. SJ2000-OMM0001-C
Air Supply
1. When extremely dry air is used as the fluid,
degradation of the lubrication properties inside
the equipment may occur, resulting in reduced
reliability (or reduced service life) of the
equipment. Please consult with SMC.
2. Install an air filter.
Install an air filter upstream near the valve. Select an air filter
with a filtration size of 5μm or smaller.
3. Take measures to ensure air quality, such as
by installing an aftercooler, air dryer, or water
separator.
Compressed air that contains a large amount of drainage can
cause the 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 an excessive amount of carbon powder is
present, 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 the SMC Best Pneumatics
catalog.
Operating Environment
1. Do not use in an atmosphere containing 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 flammable 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 subject to heavy vibration and/or shock.
4. The valve should not be exposed to prolonged sunlight. Use a
protective cover. Note that the valve is not for outdoor use.
5. Remove any sources of excessive heat.
6. If it is used in an environment where there is possible contact
with oil, weld spatter, etc., exercise preventive measures.
7. When the solenoid valve is mounted in a control panel or it’s
energized for a long period of time, make sure the ambient
temperature is within the specifications of the valve.
1. Temperature of ambient environment
Use the valve within the range of the ambient temperature
specification of each valve. In addition, pay attention when using
the valve in environments where the temperature changes
drastically.
2. Humidity of ambient environment
•When using the valve in environments with low humidity, take
measures to prevent static.
•If the humidity rises, take measures to prevent the adhesion of
water droplets on the valve.
Maintenance
1. Perform maintenance and inspection according
to the procedures indicated in the operation
manual.
If handled improperly, human injury and/or malfunction or
damage of machinery and equipment may occur.
2. Removal of equipment, and supply/exhaust of
compressed air
Before components are removed, first confirm that measures
are in place to prevent workpieces from dropping, run-away
equipment, etc. Then, cut off the supply air and electric power,
and exhaust all air pressure from the system using the residual
pressure release function.
For the 3-position closed center, exhaust the residual pressure
between the valve and thecylinder. When the equipment is
operated after remounting or replacement, first confirm that
measures are in place to prevent the lurching of actuators, etc.
Then, confirm that the equipment is operating normally.
In particular, when a 2-position double solenoid valve is used,
releasing residual pressure rapidly may cause the spool valve to
malfunction, depending on the piping conditions, or the
connected actuator to operate.
3. Low-frequency operation
Valves should be operated at least once every 30 days to
prevent malfunction. (Use caution regarding the air supply.)
4. Manual override
When a manual override is operated, connected equipment will
be actuated.
Operate only after safety is confirmed.
5. If the volume of air leakage increases or the
valve does not operate normally, do not use the
valve.
Perform periodic maintenance on the valve to
confirm the operating condition and check for
any air leakage.
1. Drain flushing
Remove drainage from the air filters regularly.
2. Lubrication
In the case of rubber seals, once lubrication has been started, it
must be continued.
Use class 1 turbine oil (with no additives), VG32. If other
lubricant oil is used, it may cause a malfunction. Please contact
SMC for information on the suggested class 2 turbine oil (with
additives), VG32.
3. Manual override operation
When switching a double solenoid valve via the manual override
operation, instantaneous operation may cause the malfunction
of the cylinder. It is recommended that the manual override be
held until the cylinder reaches the stroke end position.
UL approved
When conformity to UL is required, the SI unit should be used
with a UL 1310 Class 2 power supply.
The SI unit is a ULapproved product only if they have a
mark on the body.
SJ1000/2000/3000/4000 Series
Precautions for 4 Port Solenoid Valve 4
Be sure to read before handling. Refer to main text for detailed precautions on every series.

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Manual Override Switch Operation
For manual override operation, move the manual override switch to a
position where lettersAand B can be seen. [Manual override switch
release status (refer to the figure below)] Operation with the manual
override switch in a locked status can cause damage to the manual
override and air leakage, so be sure to release the manual override
switch before 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 be locked).
Manual Override Operation
When the manual override is operated, connected equipment will
be actuated. Confirm safety before operating.
When you operate the D type with a screw driver, turn it gently
using a precision screwdriver. [Torque: under 0.05 N·m] When you
lock the manual override of the D type, be sure to push it before
turning. [Load: 10 N or less] Turning without pushing can cause
damage to the manual override and trouble 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
be actuated. Also, if the switch is turned OFF on the valve in the
energized state, be careful because any actuators connected to a
single solenoid, a dual 3 port valve or a 3 position valve will
actuate.
Built-in Back Pressure Check Valve Type
1. Valves with built-in back pressure check valve is to protect the
back pressure inside a valve. For this reason, use caution the
valves with external pilot specification cannot be pressurized
from exhaust port [3/5(E)]. As compared with the types which
do not integrate the back pressure check valve, C value of the
flow rate characteristics (sonic conductance) goes down. For
details, please contact SMC.
2. Do not switch valves when A or B port is open to the
atmosphere, or while the actuators and air operated equipment
are in operation. The back pressure prevention seal may be
peeled off, which may cause air leakage or malfunctions. Use
caution especially when performing a trial operation or
maintenance work.
SJ1000/2000/3000/4000series
Specific Product Precautions 1
Be sure to read this before handling.
。

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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.
When Using a 4 Port Valve as a 3 Port Valve
■When using a 4 port valve as a 3 port valve
The SJ1000/2000/3000/4000 series can be used as normally
closed (N.C.) or normally open (N.O.) 3 port valves by plugging
one of the cylinder ports 4(A) or 2(B). However, exhaust ports
should be left open. It is convenient when a double solenoid 3
port valve is required.
Light/Surge Voltage Suppressor
■With power saving circuit
Compared to the standard products, power consumption is
reduced down to approx. 1/3 (in case of SJ3□60(A)T, SJ4□
60T) by cutting the unnecessary wattage required to hold the
valve in an energized state. (Effective energizing time is over 67
ms at 24 VDC.)
With power saving circuit
SJ1000/2000/3000/4000series
Specific Product Precautions 2
Be sure to read this before handling.
。