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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 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. 

 

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, 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.

 

 

 

 

 

 

 

 

 

 

 

   

 
 
 

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  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  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 

φ

3.4 

 

 

 

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 

 

 

Summary of Contents for SJ2000 Series

Page 1: ...Doc No SJ2000 OMM0001 4 Port Solenoid Valve PRODUCT NAME SJ2000 3000 Series MODEL Series ...

Page 2: ...s Safety Instructions 2 3 Precautions on Design Selection 4 5 Mounting 6 Piping 6 Wiring 6 Lubrication 6 Air Supply 7 Operating Environment 7 Maintenance 7 Specific Product Precautions 8 to 13 Troubleshooting 14 Remedy 15 1 ...

Page 3: ... 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...

Page 4: ...placement 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 understa...

Page 5: ...witch 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 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 Impleme...

Page 6: ...ossible to operate a valve in extreme temperature as low as 10o C Take appropriate measures to avoid freezing of drainage moisture etc in low temperature 6 Operation for air blowing When using a solenoid valve for air blowing use an external pilot type Use caution because the pressure drop caused by the air blowing can have an affect on the internal pilot type valve when the internal pilot type va...

Page 7: ...proximately 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 ...

Page 8: ...e 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 5 Remove any sources of excessive heat 6 If it is u...

Page 9: ... 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 built in back pressure check valve is to protect the back pressure inside a valve For this reason use caution the valves with external p...

Page 10: ...ng time is over 67 ms at 24 VDC When a power saving circuit is installed a diode to prevent reverse current is not available for 12 VDC spec Therefore use caution not to connect in reverse Be careful about the allowable voltage fluctuation since a voltage drop of about 0 5 V occurs due to a transistor Refer to the solenoid specifications of each valve for details Light Indication When equipped wit...

Page 11: ...secured at fewer than the specified number of locations warping or twisting may occur in the DIN rail and manifold causing trouble such as air leakage Fitting Assembly Replacement By replacing a valve s fitting assembly it is possible 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 assembly after removing the clip with a flat heat screwdriver etc T...

Page 12: ... 1 The 4 A and 2 B ports use the KJ series so the tube can be removed by pressing on part of the release bush However for the 1 P and 3 5 E ports please press the release bush evenly as before 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 tube while holding down the release button so that it d...

Page 13: ...oks open and they are locked automatically Next confirm that they are locked by 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 ...

Page 14: ...solenoid valve etc Wiring Instructionsfor ConnectorAssembly for Junction Common If only connector assembly for junction common is ordered please wire according to the instructions in the diagram below For details on socket mounting please refer to How to Use Plug Connector on the back page 12 Wire connection instructions 1 Strip 6 5 to 7 5 mm from the tip of the lead wire 2 Loosen the terminal scr...

Page 15: ...hifted Foreign matter caught in air seat of pilot valve Excessive amount of lubricant Higher voltage or wrong coil used Faulty wiring Poor contact at contactor wire or connection part Blown fuse or disconnection lead wire Poor seal on actuator cylinders etc side Faulty operation Pilot valve is not operated Though pilot valve does shift but main valve will not shift or will be sluggish Disconnectio...

Page 16: ...n in this operation manual 3 Lubrication has been stopped intermediately or lubrication was suspended temporary 4 Water splashed directely 5 Strong impact was given 6 Alien substance such as drain and particle got into Drain or garbage invaded a valve Reduce the amount of lubricant to the degree that no oil splashes out of the air exhaust port E port Check voltage Replace valve pilot valve Protect...

Page 17: ...otokanda Chiyoda ku Tokyo 101 0021 JAPAN Tel 81 3 5207 8249 Fax 81 3 5298 5362 URL http www smcworld com Note Specifications are subject to change without prior notice and any obligation on the part of the manufacturer 2008 SMC Corporation All Rights Reserved ...

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