6Sealed Snap Action Switch D2VW
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.
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;
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.
Soldering - Connecting to Solder Terminals
When soldering the lead wire to the terminal, first insert the lead wire
conductor through the terminal hole and then conduct soldering.
Complete the soldering at the iron tip temperature between 350 to
400 C within 3 seconds, and do not apply any external force for 1
minute after soldering. Soldering at an excessively high temperature
or soldering for more than 3 seconds may deteriorate the character-
istics of the switch.
Mounting
Use M3 mounting screws with plane washers or spring washers to
securely mount the switch.
Tighten the screws to a torque of 0.39 to 0.59 N·m(4to6kgf·cm)
■Cautions
Degree of Protection
Do not use the Switch underwater.
The switch was tested and found to satisfy the conditions necessary
to meet the following standards. However, the test only checks for
water intrusion after immersion for a specified time period, not for
switching and operation underwater.
The switch is tested and conforms to JIS C0920 (Degrees of protec-
tion provided by enclosures of electrical apparatus) and IEC60529
(Degrees of protection provided by enclosures).
Note: The object to be tested is submerged at a depth of 1 meter for
30 minutes, then checked for water intrusion.
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.
Correct
Incorrect
Incorrect
Operating range
for micro load
models D2VW-01
Operating
range for
general-load
models
D2VW-05
Current (mA)
Voltage (V)
Inoperable
range
30
24
12
5
0
110 100 1,000
0.16mA 100mA
100mA 160mA
26mA
1mA