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SJ2000-OMM0001
Design / Selection
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 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).
5.
Operation in a low temperature condition
It is possible to operate a valve in extreme temperature, as low
as -10
o
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 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 normally be energized when air is
being blown.
7. Mounting orientation
Mounting orientation is free.
Caution
SJ2000/3000 Series
Precautions for 4 Port Solenoid Valve
②
②
②
②
Be sure to read before handling.