D2VW Datasheet, PDF (6/8 Pages) Omron Electronics LLC – Sealed Snap Action Switch

Precautions
Be sure to read the precautions and information common to all Snap Action and Detection Switches, contained in the Technical User’s Guide,
“Snap Action Switches, Technical Information” for correct use.
■ Correct Use
Operations
Make sure that the switching object is perfectly separated from the
actuator when the switch is not operated and the actuator is pressed
appropriately by the switching object when the switch is operated.
The switch should be set so that its stroke will be within the rated OT
when the switch is operated.
With the pin plunger models, set the switch so that the plunger can
be actuated from directly above. Since the plunger is covered with a
rubber cap, applying a force from lateral directions may cause
damage to the plunger or reduction in the sealing capability.
■ Cautions
Degree of Protection
The D2VW was tested under water and passed the following water-
tightness test, which however, does not mean that the D2VW can be
used in the water.
JIS C0929 (rules for testing the watertightness of electrical devices
and materials), class 7 (watertightness test). Refer to the following
illustration for the test method at OMRON.
Correct
Incorrect
Incorrect
Handling
Handle the switch carefully so as not to break the sealing rubber of
the plunger.
Using Microloads
Using a model for ordinary loads to switch microloads may result in
faulty operation. Instead, use the models that are designed for
microloads and that operate in the following range;
Note: The object to be tested is left in the water for 30 minutes on con-
dition that the distance between the surface of the water and
the top of the object be 15 cm minimum and the distance be-
tween the surface of the water and the bottom of the object be
1 m minimum.
Protection Against Chemicals
Prevent the switch from coming into contact with oil and chemicals.
Otherwise, damage to or deterioration of the switch materials may
occur.
0.16mA
30
26mA 100mA
24
Operating range
for micro load
models D2VW-01
Operating
range for
general-load
models
D2VW-05
12
Inoperable
range
5
1mA
100mA 160mA
0
1
10
100
1,000
Current (mA)
However, even when using microload models within the operating
range shown above, if inrush current or inductive voltage spikes
occur when the contact is opened or closed, then contact wear may
increase and so decrease the service life. Therefore, insert a contact
protection circuit where necessary.
212
Sealed Snap Action Switch D2VW