A22NE-P
28
A22E A22NE-P
Common Accessories and Tools
Common Note
Safety Precautions
Be sure to read the precautions for All PushButton Switches in the website at: http://www.ia.omron.com/.
Indication and Meaning for Safe Use
• If the Operation Unit is separated from the Switch Units, the
equipment will not stop, resulting in a hazardous situation.
Make sure the Operation Unit, Mounting Latches, and the Switch
Units are properly assembled.
<Assembling the Operation Unit and the Mounting Latches>
Align the TOP indication (the mark) on the Operation Unit with
the TOP indication on the Mounting Latches to fit it properly, and
turn the lock lever on the Mounting Latch in the direction shown in
the figure below until a clicking sound is heard.
<Assembling the Mounting Latches and Switch Blocks>
Make sure the hooking part (convex part) on the Mounting Latches
is perfectly latched into the hooking part (concave part) on the
Switch Block.
• When transition wiring is performed, make sure the switching
current inside the Switch and the current based on the transition
wiring is below the rated current of the Switch.
If a current value higher than the rated current flows, it could result
in emission of heat, or damage and deformation of the Switch,
which could cause fire and locking of the contact, and thus a loss
of safety.
• Do not perform wiring with power supplied to the Switch/Indicator.
Do not touch the terminals or other charged parts while power is
being supplied. Doing so may result in electric shock.
• Do not disassemble or modify the Switch/Indicator under any
circumstances.
• Doing so may prevent the Switch/Indicator from functioning to its
full capability. Do not drop the Switch/Indicator. Do not apply
pressure that may deform or alter the Switch/Indicator.
• The durability of the Switch varies considerably depending on the
switching conditions. Always test the Switch/Indicator under actual
working conditions before application and use the Switch/Indicator
only for the number of switching operations allowed.
• Do not allow the load voltage and current to exceed the rated
value. This may damage or burn out the Switch/Indicator.
• Do not use the Switch/Indicator in locations where explosive or
flammable gases or liquid may be present or scattered. The
electric ark or the heat caused by switching contacts may cause a
fire or explosion.
• Do not use the Switch/Indicator in locations where toxic gases,
such as H2S, SO2, NH3, HNO3, and Cl2, may be present, or in
locations subject to high temperature or humidity. Doing so may
damage the Switch/Indicator due to contact failure or corrosion.
• Do not use the Switch/Indicator submersed in oil or water, or in
locations continuously subject to splashes of oil or water. Doing so
may result in oil or water entering and damaging the Switch/
Indicator.
• Do not use or keep the Switch/Indicator under the following
conditions:
•Subject to severe temperature changes.
•Subject to high humidity or condensation.
•Subject to severe vibration or shock.
•Where direct rays of the sun strike.
•Where sea breeze may be present.
• Make sure that a rubber washer is present between the Operation
Unit and the panel. Otherwise, the specifications of the protective
structure may not be satisfied.
• Do not apply excessive force to the Switch or wirings. Damage or
deformation of the Switch Block could cause an improper contact
or a loss of safety.
• Use an appropriate wiring and crimp terminals (hereinafter, called
ferrule terminals).
• Exercise caution to avoid wiring errors when connecting the
terminals.
• To prevent wiring materials from smoking or ignition, confirm wire
ratings and use the wiring materials given in the following table.
Use wiring crimp terminals and ferrule terminals of the specified
size.
• After storing the product for a long time exceeding 1 year, perform,
at a minimum, inspections of the operating characteristics, contact
resistance, insulation resistance, and dielectric strength as well as
evaluate the product under the working conditions.
• This Switch/Indicator is intended for indoor use only.
Using the Switch/Indicator outdoors may result in failure.
Precautions
for Safe Use
Comments on what to do or avoid doing, to use
the product safely.
Precautions
for Correct
Use
Supplementary comments on what to do or
avoid doing to use the product safely and
prevent its malfunctioning or an adverse effect
on its performance or functions.
Precautions for Safe Use
1
2
Mounting
Latches
Operation Unit
Lock lever
Mounting
Latches
Switch Blocks
Wire Type Wire
material
Recommended
Wire
Wire coating peeling
amount
Solid wire/
Stranded
Wire
Copper 0.25 to 1.5 mm2
AWG 24 to 16
Ferrules used: 10 to 12 mm
(Varies depending on the
recommended ferrule
conductor length)
Ferrules not used: 8 mm