A16
Safety Precautions
Refer to Safety Precautions for All Pushbutton Switches.
Using the Microload
WARNING
• Insert a contact protection circuit, if necessary, to prevent the
reduction of life expectancy due to extreme wear on the contacts
caused by loads where inrush current occurs when the contact is
opened and closed.
• The A16 allows both a standard load (125 V at 5A, 250 V at 3 A)
and a microload. If a standard load is applied, however, the
microload area cannot be used. If the microload area is used with a
standard load, the contact surface will become rough, and the
opening and closing of the contact for a microload may become
unreliable.
Do not apply a voltage between the incandescent
lamp and the terminal that is greater than the rated
voltage. If the incandescent lamp is broken, the
operating part may pop out.
Always turn OFF the power and wait for 10 minutes
before replacing the incandescent lamp. If the lamp is
replaced immediately after the power is turned OFF,
the remaining heat may cause burns.
• The minimum applicable load is the N-level reference value. This
value indicates the malfunction reference level for the reliability
level of 60% (λ 60) (conforming to JIS C5003).
Precautions for Correct Use
The equation, λ 60 = 0.5 × 10-4/operations indicates that the
estimated malfunction rate is less than 1/2,000,000 operations with
a reliability level of 60%.
Mounting
• Always make sure that the power is turned OFF before mounting,
removing, or wiring the Switch, or performing maintenance.
• Do not tighten the mounting nut more than necessary using tools
such as pointed-nose pliers. Doing so will damage the mounting
nut.
0.15 mA
30
The tightening torque is 0.29 to 0.49 N·m.
Wiring
24
• Solder terminals and quick-connect terminals (#110) are commonly
used for terminals.
Microload area
• Be sure to use electrical wires that are a size appropriate for the
applied voltage and carry current (conductor size is 0.5 to 0.75
mm2). Perform soldering according to the conditions provided
below. If the soldering is not properly performed, the lead wires will
become detached, resulting in short-circuits.
1. Hand soldering: 350°C, within 3 s
2. Dip soldering: 350°C, within 3 s
12
Invalid
area
5
1 mA
0
0.1
1
10
100
1,000
Wait for one minute after soldering before exerting any external
force on the solder.
• Use non-corrosive resin fluid as the flux.
Current (mA)
LED
• Make sure that the electric cord is wired so that it does not touch
the Unit. If the electric cord touches the Unit, then electric wires with
a heat resistance of 100°C min. must be used.
• After wiring the Switch, maintain an appropriate clearance and
creepage distance.
• The LED current-limiting resistor is built-in, so external resistance
is not required.
Rated voltage
Internal limiting resistor
Red, yellow, white: 300 Ω
Green, blue, pure white: 160±Ω
5 VDC
Operating Environment
Red, yellow, white: 1 kΩ
Green, blue, pure white: 910±Ω
12 VAC/VDC
• This Switch is intended for indoor use only. Using the Switch
outdoors will cause the Switch to fail. If IP40 models are used in
locations subject to dust, metallic particles, or oil, be careful that
none of these penetrates the Switch.
• The IP65 model is designed with a degree of protection so that it
will not sustain damage if it is subjected to water from any direction
to the front of the panel.
• Do not use the Switch submersed in oil or water, or in locations
continuously subject to splashes of oil or water. Doing so may result
in oil of water entering the Switch.
24 VAC/VDC 2.4 kΩ
Others
• The oil-resistant IP65 uses NBR rubber and is resistant to general
cutting oil and cooling oil. Some particular oils cannot be used with
the oil-resistant IP65, however, so contact your OMRON
representative for details.
• The durability of the Switch depends in the switching conditions.
Always test the Switch under actual application conditions to
confirm applicability and use the Switch only for the number of
switching operations that will not affect performance.
Continuing to use the Switch with degraded performance will
eventually result insulation faults between circuits, burning of the
Switch, or other failures.
• If the panel is to be finished with coating, etc., make sure that the
panel meets the specified dimensions after the coating.
• Do not subject the Switch to extreme shock or vibration. Doing so
will cause malfunctions and damage to the Switch.
• Do not let sharp objects come into contact with the Switches that
are made of resin. Doing so will damage the Switches, causing
scratches on the outside of the operating parts, and malfunction.
When handling the Switches, do not throw or drop them.
24
OMRON [ OMRON ELECTRONICS LLC ]
