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With power-saving circuit
Power consumption is decreased to approx. 1/3 (for SJ3
m
60T)
compared with the standard model by reducing the wattage re-
quired to hold the valve in an energized state. (Effective ener-
gizing time is over 67 ms at 24 VDC.)
Caution
Light/Surge Voltage Suppressor
If a valve is energized continuously for long periods of time, the
rise in temperature due to heat-up of the coil assembly may
cause a decline in solenoid valve performance, reduce the ser-
vice life, or have adverse effects on peripheral equipment. If the
valve is energized continuously for long periods of time, be sure
to use a valve with power-saving circuit (continuous duty type). In
particular, if three or more adjacent stations on the manifold are
energized simultaneously for extended periods of time or if the
valves on A side and B side are energized simultaneously for
long periods of time, take special care as the temperature rise will
be greater.
If the continuously energized time exceeds three hours, please
contact SMC.
Continuous Duty
When using a 4-port valve as a 3-port valve
The SJ1000/2000/3000 series can be used as normally closed
(N.C.) or normally open (N.O.) 3-port valves by closing one of
the cylinder ports 4(A) or 2(B) with a plug. However, they
should be used with the exhaust ports kept open. They are
convenient at times when a double solenoid type 3-port valve is
required.
Caution
Caution
Used as a 3-Port Valve
Non-polar type
Single solenoid
Electric circuit diagram (with power-saving circuit)
In case of positive common, single solenoid
Double solenoid, 3-position type
Single solenoid
Double solenoid, 3-position type
Positive common
Single solenoid
Double solenoid, 3-position type
Negative common
In case of negative common, single solenoid
(R1)5
2(B)
(A)4
1
(P)
3(R2)
(R1)5
2(B)
(A)4
1
(P)
3(R2)
(R1)5
2(B)
(A)4
1
(P)
3(R2)
(R1)5
2(B)
(A)4
1
(P)
3(R2)
Varistor
Varistor
LED
Coil
LED
Coil
SOL.b
(–, +)
COM
(+, –)
SOL.a
(–, +)
Varistor
LED
Coil
SOL.a
(–, +)
COM
(+, –)
Coil
Coil
LED
(Orange)
Coil
Polarity protection diode
LED
(Green)
[SOL.b]
(–)
[SOL.a]
(–)
COM
(+)
LED
Polarity protection diode
[SOL.a]
(–)
COM
(+)
Coil
Coil
LED
(Orange)
Coil
Polarity protection diode
LED
(Green)
[SOL.b]
(+)
[SOL.a]
(+)
COM
(–)
LED
(Orange)
Polarity protection diode
[SOL.a]
(+)
COM
(–)
LED
i1: Inrush current, i2: Holding current
i2
i1
(–)
(+)
Coil
Diode
Timer circuit
Polarity protection diode
Not available for the 12 VDC specification
i1
LED
i1: Inrush current, i2: Holding current
i2
(+)
(–)
Coil
Diode
Timer circuit
Polarity protection diode
Not available for the 12 VDC specification
SJ1000/2000/3000
Series
Specific Product Precautions 2
Be sure to read this before handling the products. Refer to the back cover for safety instruc-
tions. For 3/4/5-port solenoid valve precautions, refer to the “Handling Precautions for SMC
Products” and the “Operation Manual” on the SMC website: https://www.smcworld.com
Plug position
2(B) port
4(A) port
Type of actuation
N.C.
N.O.
Number of solenoids
Single
Double
109