SMC Networks ITV0000 Series Operation Manual page 7

7. Take the following steps to avoid malfunction due to noise.
1) Remove power supply noise during operation by installing a line filter, etc., in the AC power
line.
2) For avoiding the influence of noise or static electricity, install this product and its wiring as far
as possible from strong electric fields such as those of motors, power lines, etc.
3) Be sure to implement protective measures against load surge for induction loads (solenoid
valves, relays, etc.).
8. The product characteristics are confined to the static state.
When air is consumed on the output side, and especially used in the system with large
leakage, pressure cannot approach the set pressure and the service life is drastically
shortened with a humming noise of the solenoid valve.
9. For details on the handling of this product, refer to the operation manual
which is included with the product.
10. In locations where the body is exposed to water, dust, etc., there is a
possibility that moisture or dust could enter the body through the
breathing hole.
Mount a fitting and tube (M-3AU-3 fitting and TIU01m-mm tube
recommended) onto the breathing hole and run the tube to a location
not exposed to moisture, dust, etc.
11. If this product will be used in a sealed environment, such as inside an inspection box, a
ventilation fan should be installed to ensure adequate ventilation as this product can
generate heat in some operating conditions.
If you use more than one unit, use the one for the manifold.
Alternatively, when using it for stand-alone use, please use it within the specified
temperature range of this product, such as leaving a gap between the products.
12. Each product needs to be powered by one power supply unit.
The wiring of this product has the same common between the GND for power and the signals;
there is a possibility that a wrong current occurs and prevents a proper operation if one power
supply unit controls multiple electro-pneumatic regulators.
13. This product does not have a shut-off valve function. If air pressure is supplied without
electric power being applied, output pressure may increase to the pressure equivalent of
the supply pressure. Operate the system to shut off the supply pressure when not
operating the product.
14. For this product, by conducting the procedure described below (steps A to D), the
parameters compatible with the power supply voltage and supply pressure in use can be
obtained.
If the desired output pressure values cannot be reached due to fluctuations in the
operating conditions, etc., perform this operation.
A) Change the power supply voltage in use by ±0.4 VDC or more.
B) After inputting the supply pressure used on the inlet side of the ITV, adjust the input signal as
described below.
(0% R 100% R 0%) (Change it gradually, waiting 10 s or more between each adjustment.)
* Please contact SMC if difficulty inputting signals occurs.
C) Change the power supply voltage according to the operating conditions/requirements, and
repeat step B.
D) Input the power supply voltage and a 0% signal, and retain for 6 minutes or more. (Supply
pressure is not required.)
While conducting the procedure stated above, noise may be generated by the solenoid
valve. However, this does not affect the obtainment of the parameters. In addition, be sure
to conduct the procedure with the air sealed in the piping.
15. When the power is turned on, a noise may be generated as a means of checking the
operating condition of the solenoid valve. This noise is normal and does not indicate a
fault.
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