Panasonic Corporation Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
Technical Terminology & Cautions for Use (Detection Switches)
Panasonic Corporation 2021
AECTB36E 202110
MOUNTING STATE AND ENVIRONMENT
Checking the insulation distance
After mounting and wiring, check the insulation distance between
terminals and the ground. If the insulation distance is inadequate,
mount insulating material between as required.
Fastening the snap-action switch body
See the Section “CAUTIONS FOR USE” for the individual switch.
Position adjustment with effector
1) The effector should be positioned so that direct force is not applied
to the plunger or actuator in its free position. The operating force to
the plunger should only be applied in a perpendicular direction.
2) Note that the use of the switch as a stopper may cause an
operational problem.
Switch installation position
Basically, the switch should be installed so that the object to
press
the switch’s plunger or lever can press it down to 70 to 100% of OT
of the switch. When determining the position, the tolerance of OP
(Operating Position) and other factors should be taken into account.
The following describes the case where the strictest tolerance
conditions are adopted.
Example: Hinge lever type FS switch
Reference values: OP = 8.8±0.8 mm
PT = Max. 2.8 mm
OT = Min. 1.2 mm
FP
OP
PT
TTP
OT
(1) When the switch is not pressed
The object to press the lever should not be in contact with the
lever.
For this purpose, the object should be at a distance from the
switch father than the maximum FP (Free Position) value.
FP Max = OP Max + PT Max = 9.6 + 2.8 = 12.4 mm Max
The object should be at a distance of 12.4 mm or more
from the mounting hole.
(2) Depressed position
The plunger/lever should be pressed down to 70% or more of
OT (Over Travel). Therefore, the depressed position should be
calculated based on the minimum value of OP (Operating
Position) and the 70 and 100% of the OT value.
OP Min - 70% of OT = 8.0 - 0.84 = 7.16 mm
OP Min - 100% of OT = 8.0 - 1.2 = 6.80 mm
The plunger/lever should be pressed down to the position of
6.80 to 7.16 mm from the mounting hole.
Soldering precautions
For manual soldering, lay the terminals flat (horizontal with the
ground) and quickly perform the soldering operation using a
soldering iron with the appropriate heat capacity and the proper
amount of solder. Take care that the flux does not flow into the
switch interior by using a ventilation fan to discharge flux gas and to
prevent contact of the switch body with the soldering iron tip.
Be careful not to apply force to the lead wires or the terminal
portions immediately after soldering.
The temperature setting and time conditions vary depending on the
product.
See the section “CAUTIONS FOR USE” for each product.
＜Examples＞
Soldering iron tip
Wrong
Correct
Avoid using in a silicon atmosphere
Avoid using organic silicon rubber, adhesives, sealing compounds,
oil, grease, and wires in a silicon atmosphere.
Please consult us when using under the following
conditions*:
1) Environments where hydrogen sulfide or other corrosive gases are
present.
2) Environments where gasoline, thinner or other flammable, explosive
gases are present.
3) Dusty environments (for non-seal type snap action switches).
4) The perpendicular operating speed exceeds the allowable operating
speed.
5) Switching between different poles.
6) Use in environments not in the prescribed temperature or humidity
range.
Storage precautions
To prevent discoloration due to sulfurization of the terminals (silver-
plated), store the switches in a polyethylene bag or other suitable
airtight container.
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