4
Sealed Reed Basic Switch
D2RW
Precautions
■ Cautions
Degree of Protection
Do not use this product immersed in water. Although this model sat-
isfies the test conditions for the standard given below, this test is to
check the ingress of water into the switch enclosure after submerging
the Switch in water for a given time. Satisfying this test condition
does not mean that the Switch can be used immersed in water.
IEC 60529: 2001 Degrees of protection provided by enclosures
(IP Code)
Code: IP67 (No water intrusion after immersion for 30 minutes.)
Prevent the Switch from long-term exposure to water spray and/or
having water adhere to the Switch surface during sudden tempera-
ture changes, otherwise water may intrude into the interior of the
Switch due to suction.
Prevent the Switch from coming into contact with oil and chemicals.
Otherwise, damage to or deterioration of Switch materials may
result.
The environment-resistant performance of the switch differs depend-
ing on operating loads, ambient atmospheres, and installation condi-
tions, etc. Please perform an operating test of the switch in advance
under actual usage conditions.
Handling
Do not drop the Switch, as the internal mechanism of the Switch may
be damaged and, as a result, the characteristics of the Switch may
be degraded.
Effect of External vibrations
Note that the application of 1 kHz or higher vibration to the Switch
may cause switching failure due to resonance frequencies.
■ Correct Use
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 Nm {4 to 6 kgfcm}.
Mount the Switch onto a flat surface. Mounting on an uneven surface
may cause deformation of the Switch, resulting in faulty operation or
damage.
Handling
When handling the Switch, ensure that uneven pressure or, as
shown in the following diagram, pressure in a direction other than the
operating direction is not applied to the Actuator, otherwise the Actu-
ator or Switch may be damaged, or durability may be decreased.
Operating Stroke Setting
Install the Switch so that the operating body matches the movement
direction of the actuator.
Set the operating stroke so that the actuator is completely disen-
gaged when the switch is in the free position (FP), and is pushed to a
point between 60% and 90% of the OT distance after the switch is
operated.
Avoid shock operation to the Switch, as this may result in a degrada-
tion in the durability of the switch.
Effect of External Magnetic Field
Do not install two or more Switches in close proximity. Doing so may
result in failure due to interference by leaked magnetic fields. When
installing several switches, maintain a distance of at least 8 mm
between units.
When mounting on a steel plate, maintain a distance of at least 2 mm
between Switches as failure to do so may lead to changes in operat-
ing characteristics.
Avoid installing the Switch where there are strong magnetic forces,
as these may cause failures in operation.
Screws used to mount the Switch should be made of brass or stain-
less steel (SUS304). Avoid using steel screws.
Storage Environment
Make sure that the location is free of corrosive gas, dust with no high
temperature or humidity, or rapid temperature change. It is recom-
mended that a switch be inspected before use if it is stored for three
months or more.
Effect of Contained Material
The Switch uses a corrosion inhibitor inside the unit. Before using,
check the effect of outgassing.