Panasonic Corporation Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
Technical Terminology & Cautions for Use (Detection Switches)
Panasonic Corporation 2021
AECTB36E 202110
Usage, storage, and transport conditions (except
turquoise switches)
During usage, storage, or transportation, avoid locations subject to
direct sunlight and maintain normal temperature, humidity, and
pressure conditions.
The allowable specifications for environments suitable for usage,
storage, and transportation are given below.
1) Temperature: The allowable temperature range differs for each
switch, so refer to the switch’s individual specifications. In
addition, when transporting or storing switches while they are
tube packaged, there are cases when the temperature may differ
from the allowable range. In this situation, be sure to consult the
individual specifications.
2) Humidity: The allowable temperature range differs for each
switch, so refer to the switch’s individual specifications.
3) Pressure: 86 to 106 kPa
The humidity range varies with the temperature. Use within the
range indicated in the graph below.
5
85
Humidity (％ RH)
Avoid icing
when used at
temperatures
lower than 0°C
Avoid con-
densation when
used at tem-
peratures higher
than 0°C
Allowable range
Ambient temperature (℃)
0
85
-40
(The allowable temperature depends on the switch.)
Condensation will occur inside the switch if there is a sudden
change in ambient temperature when used in an atmosphere of
high temperature and high humidity. This is particularly likely to
happen when being transported by ship, so please be careful of
the atmosphere when shipping. Condensation is the phenomenon
whereby steam condenses to cause water droplets that adhere to
the switch when an atmosphere of high temperature and humidity
rapidly changes from a high to low temperature or when the
switch is quickly moved from a low humidity location to one of high
temperature and humidity.
Please be careful because condensation can cause adverse
conditions such as deterioration of insulation, coil cutoff, and rust.
Condensation or other moisture may freeze on the switch when
the
temperatures is lower than 0°C 32°F. This causes problems such as
sticking of movable parts or operational time lags.
The plastic becomes brittle if the switch is exposed to a low
temperature, low humidity environment for long periods of time.
Storage for extended periods of time (including transportation
periods) at high temperatures or high humidity levels or in
atmospheres with organic gases or sulfide gases may cause a
sulfide film or oxide film to form on the surfaces of the contacts and/
or it may interfere with the functions. Check out the atmosphere in
which the units are to be stored and transported.
In terms of the packing format used, make every effort to keep
the
effects of moisture, organic gases and sulfide gases to the absolute
minimum.
We reserve the right to modify without notice the
materials, internal components, and other parts to
improve product quality.
Handling precautions
When handling the switches, be careful not to drop them on the floor
since this may damage them.
* Select contact sulfurization (clipping) prevention products (FS and Au-clad double
layer contacts) for use with extremely small loads or an environment-resistant
Turquoise switch.
Others
1) Failure modes of switches include short-circuiting, opencircuiting
and temperature rises. If this switch is to be used in equipment
where safety is a prime consideration, examine the possible
effects of these failures on the equipment concerned, and ensure
safety by providing protection circuits or protection devices. In
terms of the systems involved, make provision for redundancy in
the design and take steps to achieve safety design.
2) The ambient operating temperature (and humidity) range quoted
is the range in which the switch can be operated on a continuous
basis: it does not mean that using the switch within the rating
guarantees the durability performance and environment
withstanding performance of the switch. For details on the
performance guarantee, check the specifications of each product
concerned.
ー 13 ー
