Detection Switch

D3C

47

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

Mounting

Turn off the power supply before mounting or removing the switch,

wiring or performing maintenance or inspection. Failure to do so may

result in electric shock or burning.

Mount the switch onto a flat surface. Mounting on an uneven surface

may cause deformation of the switch, resulting in faulty operation or

breakage in the housing.

Application of Operation Force to the Lever

Apply operation forces to the lever in its operating direction. Applying

operating force to the lever in any other directions will damage the

switch or cause malfunction.

Mounting Plate

Use materials other than ABS or polycarbonate for the mounting

plate. Since grease is used within the switch, cracks may be caused

if grease from the switch comes in contact with such materials.

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.

■ Cautions

Terminal Connection

When soldering the lead wire to the terminals, first bind the lead wire

to the terminal and then apply the 60(Sn):40(Pb) solder to the termi-

nals. Complete soldering within 5s at a soldering iron temperature of

260

°C. Soldering at a temperature exceeding 260°C, soldering for

more than 5 s, or repeated soldering will degrade the switch charac-

teristics.

When soldering the lead wire to the PCB terminal, pay careful atten-

tion so that the flux and solder liquid level does not exceed the PCB

level.

It is also recommended that you apply flux guard to the mounting sur-

face of the switch.

Incorrect

Incorrect

Incorrect

Correct

Operating range

Inoperable

range

Current (mA)

0.16 mA

100 mA

1,000

100

1

10

30

24

12

5

0

0.1

1mA

Switch mounting surface