Datasheet

q
w
Rubber seal
Washer
Connector
Binding head screw with flange
Tightening torque of 0.5 to 0.6 N·m
Gasket
Binding head screw
Tightening torque of 0.5 to 0.6 N·m
Compatible cable
Note)
(Outside cable diameter of
ø6 to 12 mm)
2
3
+
—
1
2: −
(+)
1: +
(−)
 DIN terminal (Class B only)
Since internal connections are shown below for the DIN
terminal, make connections to the power supply accordingly.
Electrical Connections
Caution
 Grommet
Class B coil: AWG20 Outside insulator diameter of 2.5 mm
Class H coil: AWG18 Outside insulator diameter of 2.1 mm
∗ There is no polarity.
sUse a heavy-duty cord with an outside cable diameter of ø6 to 12 mm.
s5SETHETIGHTENINGTORQUESBELOWFOREACHSECTION
Rated voltage
DC (Class B only)
100 VAC
200 VAC
Other AC
q
Black
Blue
Red
Grey
w
Red
Blue
Red
Grey
Lead wire colour
Terminal no.
DIN terminal
1
+ (−)
2
− (+)
Note) For an outside cable diameter of ø9 to 12 mm, remove the internal
parts of the rubber seal before using.
∗ There is no polarity.
Caution
Operating Environment
Warning
1. Do not use in an atmosphere having corrosive
gases, chemicals, sea water, water, water vapor, or
where there is direct contact with any of these.
2. Do not use in explosive atmospheres.
3. Do not use in locations subject to vibration or
impact.
4. Do not use in locations where radiated heat will be
received from nearby heat sources.
5. Employ suitable protective measures in locations
where there is contact with water droplets, oil or
welding spatter, etc.
Maintenance
Warning
1. Filters and strainers
1) Be careful regarding clogging of filters and strainers.
2) Replace filter elements after one year of use, or earlier if
the pressure drop reaches 0.1 MPa.
3) Clean strainers when the pressure drop reaches 0.1 MPa.
2. Lubrication
When using after lubricating, never forget to lubricate continu-
ously.
3. Storage
In case of long term storage after use with heated water,
thoroughly remove all moisture to prevent rust and deterioration
of rubber materials, etc.
4. Exhaust the drainage from an air filter periodically.
1. Removing the product
The valve will reach a high temperature when used with high
temperature fluids. Confirm that the valve temperature has
dropped sufficiently before performing work. If touched inadver-
tently, there is a danger of being burned.
1) Shut off the fluid supply and release the fluid pressure in
the system.
2) Shut off the power supply.
3) Remove the product.
2. Low frequency operation
Switch valves at least once every 30 days to prevent malfunc-
tion. Also, in order to use it under the optimum state, conduct a
regular inspection once a half year.
Operating Precautions
Warning
1. If there is a possibility of reverse pressure being
applied to the valve, take countermeasures such as
mounting a check valve on the downstream side of
the valve.
2. When problems are caused by a water hammer,
install water hammer relief equipment (accumulator,
etc.), or use an SMC water hammer relief valve
(Series VXR). For details, please consult with SMC.
Series VX21/22/23
Specific Product Precautions 4
Be sure to read before handling.
Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products”
(M-E03-3) and the Operation Manual for 2 Port Solenoid Valves for Fluid Control
Precautions. Please download it via our website, http://www.smcworld.com
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