–60 V
–60 V
–60 V
Surge voltage
Surge voltage
24 V
0 V
0 V
24 V
0 V
Surge voltage
Power supply circuit breaker
Large capacity
load: Energized
Relay
sol.2: De-
energized
sol.1: Energized
Output circuit
Output circuit
Internal circui
t
Internal circui
t
24 VDC
R
R
R
Countermeasure parts
Surge voltage
Surge voltage
–2 V or less
–2 V or less
–2 V or less
– (Anode)
+ (Cathode)
Diode
24 V
0 V
0 V
24 V
0 V
Surge voltage
Power supply circuit breaker
Large capacity
load: Energized
Relay
sol.2: De-
energized
sol.1: Energized
24 VDC
R
R
R
Applied voltage
Standard
With power saving circuit
40 ms
24 V
0 V
1.55 W
0.55 W
0 W
For DIN type, installed in the connector
(~)
(~)
(~)
(~)
LED
Varistor
Neon bulb
Varistor
Polarity protection diode
Diode
Coil
LED
PWM circuit
Coil
Coil
Red (+)
Black (–)
Caution
Residual voltage of the surge voltage suppressor
Note) if a varistor or diode surge voltage suppressor is used, the-
re is some residual voltage to the protection element and
rated voltage. Therefore, refer to the table below and pay
attention to the surge voltage protection on the controller
side. Also, since the response time does change, refer to
the specifications on page 2 and 9.
Residual Voltage
Surge voltage suppressor
S, Z
R, U
DC
24
Approx. 47 V
Approx. 1 V
AC
Approx. 1 V
—
12
Approx. 32 V
Figure 1. Surge intrusion circuit example (NPN outlet example) (24 VDC)
Figure 2. Surge intrusion circuit example (NPN outlet example) (24 VDC)
Caution
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).
Countermeasure for Surge Voltage Intrusion
Light/Surge Voltage Suppressor
• Since the voltage will drop by approx. 0.5 V due to the transis-
tor, pay attention to the allowable voltage fluctuation. (For de-
tails, refer to the solenoid specifications of each type of valve.)
With power saving circuit
<AC>
There is no S option, since a rectifier prevents surge voltage
generation.
Grommet or L/M-type plug connector
With light/surge voltage suppressor (
Z)
DIN or Conduit terminal
With light/surge voltage suppressor (
Z)
<Electrical power waveform of energy saving type>
Power consumption is decreased by approx. 1/3 by reducing
the wattage required to hold the valve in an energized state.
(Effective energizing time is over 40 ms at 24 VDC.)
Refer to the electrical power waveform as shown below.
Series
VP
Specific Product Precautions 5
Be sure to read before handling.
Refer to back pages 1 and 2 for Safety Instructions, “Handling Precautions for SMC
Products” (M-E03-3) for 3/4/5 Port Solenoid Valves Precautions.
Series
Piping
port
Port
size
Applicable tubing O.D.
ø3.2 ø4
ø6
ø8
ø10 ø12 ø16
VP(A)300
VP(A)500
VP(A)700
VV3P(A)3
Manifold base
VV3P(A)5
Manifold base
VV3P(A)7
Manifold base
1P, 2A, 3R
X
1P, 2A, 3R
X
1P, 2A, 3R
X
1P, 2A, 3R
X
1P, 2A, 3R
X
1P, 2A, 3R
X
1/8, 1/4
M5
1/4, 3/8
1/8
3/8, 1/2
1/8
1/4
M5
3/8
M5
1/2
1/8
Applicable Fittings: Series KQ2H, KQ2S
N.C.
N.O.
N.C.
N.O.
One-touch Fittings
When fittings are used, they may interfere with others depending
on their types and sizes. Therefore, the dimensions of the fittings
to be used should first be confirmed in their respective
catalogues.
Fittings compliant with the VP series are stated below. If the
fitting within the applicable range is selected, there will not be any
interference.
Caution
Type of Actuation Changing
Warning
Example: Changing from N.C. to N.O.
1) Base mounted
1. Remove the body from the sub-plate and reset the “
” mark
on the body corresponding to the “N.O.” mark on the sub-plate
as shown in the figure above.
2. Remove the end plate from the body and rotate the end plate
by 180
°
so that the “N.O.” mark on the end plate is at the top
of the valve.
Note) It is not necessary to change the piping when this is done.
2) Body ported
Remove the end plate from the body and rotate the end plate
by 180
°
to correspond the “N.O.” mark on the end plate to the
top of the valve.
Note)Piping should be arranged as follows.
Port
Type
of actuation
N.C.
N.O.
Inlet side
Exhaust side
2A
1P
Outlet side
Outlet side
Exhaust side
Inlet side
3R
<N.C.>
<N.O.>
<N.C.>
<N.O.>
When changing the actuation or restarting the valve
after the change, make sure that safety is fully
assured.
Series
VP
Specific Product Precautions 6
Be sure to read before handling.
Refer to back pages 1 and 2 for Safety Instructions, “Handling Precautions for SMC
Products” (M-E03-3) for 3/4/5 Port Solenoid Valves Precautions.
Back page 7