A22Z-R25 datasheet(23/30 Pages) OMRON

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A22

Safety Precautions

Refer to Safety Precautions for All Pushbutton Switches/Indicators.

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

Operation Units 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.

Mounting

• Do not perform wiring with power supplied to the Switch. Do not

touch the terminals or other charged parts of the Switch while

power is being supplied. Doing so may result in electric shock.

• Always make sure that the power is turned OFF before mounting,

removing, or wiring the Switch, or performing maintenance.

Do not tighten the mounting ring more than necessary using tools

such as pointed-nose pliers. Doing so will damage the mounting

ring.

The tightening torque is 0.98 to 1.96 N·m.

• Recommended panel thickness: 1 to 5 mm.

• When mounting the caps after changing the LED or the caps,

tighten the caps at a tightening torque of 0.49 tp 0.78 N·m.

Wiring

• Terminal screws must be Phillips or slotted M3.5 screws with a

square washer.

• The tightening torque is 1.08 to 1.27 N·m.

• Solid wires, stranded wires, and crimp terminals can be connected

to the Switch.

Applicable Wire Size

Stranded wire: 2 mm2 max.

Solid wire: 1.6 dia. max.

Bare Crimp Terminals

Crimp Terminals with Insulating Sheath

• After wiring the Switch, maintain an appropriate clearance and

creepage distance.

Operating Environment

• 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.

• This switch is intended for indoor use only.

Using the Switch outdoors will result in failure.

LED

• The LED current-limiting resistor is built-in, so internal resistance is

not required.

• If commercially available LEDs are used, select the ones that meet

the following conditions:

Base: BA9S/13

Overall length: 26 mm max.

Power consumption: 2.6 W max.

When DC-specific LEDs are used, wire the Switch so that the X1

terminal is positive.

• Mis-lighting of the LED

The LED lights with approx. 0.1 mA or less of micro-current. Take

a countermeasure like adding a resistor to prevent mis-lighting in

parallel to the LED.

The micro-current varies with the machine (leak current or stray

capacity between cables, etc.). Select resistance value and

allowable power consumption that meet the actual current.

Others

• 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.

Using the Microload

• 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 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).

The equation,

λ 60 = 0.5 x 10−6/operations indicates that the

estimated malfunction rate is less than 1/2,000,000 operations with

a reliability level of 60%.

WARNING

Precautions for Correct Use

8 mm max.

16.0 mm max.

8 mm max.

20.2 mm max.

8 mm max.

20.2 mm max.

LED

lamp

R:10k

Ω (1W)

Bleeder resistor

(Circuit example)

In case of using 24 VAC/VDC, Direct lighting

Microload area

Standard

load area

Invalid

area

0.1

100

1,000

10 mA

1 mA

0.16 mA

1.6 mA

100 mA

Current (mA)

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