WLRCL datasheet(44/52 Pages) OMRON

44 / 52 page

WL-N/WLM-N

Safety Precautions

• Be sure to ground. If not, there is the possibility that electrical shock

occurs.

• Do not touch charged switch terminals while the switch has carry

current, otherwise there is the possibility that electrical shock

occurs.

• Do not disassemble the limit switch or touch inside of it under

supplying power, otherwise there is the possibility that electrical

shock occurs.

• Do not touch the wire or rod type actuator in order to prevent injury.

• Connect a fuse which has 1.5 to 2 times higher breaking current

than the switch rated current to the switch in series in order to

prevent the switch from short-circuit damage.

On the occasion when using the switch with GB ratings, use a 10A

fuse that complies IEC60269, either type gG.

• The durability of switch is depends on the operating condition.

Be sure to check the condition with actual using condition before

using, and use with the number of times of operating without a

performance problem.

• Do not drop the switch. Otherwise, there is the possibility that the

switch functions may be spoiled.

• Do not connect a Single Limit Switch to two power supplies that are

different in polarity or type.

• Be sure to keep the load current less than the rated value.

Otherwise, there is the possibility that the switch may be damage

and/or burnout.

• Minimum operating load: 5 VDC 1 mA, resistive load, P level

Note: The P level indicates the standard malfunction level at a

reliability level of 60% (

λ60).

(JISC5003)

λ60 = 0.1 × 10-6 per operation, which indicates an

estimated malfunction of 1 out of every 10,000,000 operations

at a reliability level of 60%.

• Do not use the Switch by itself in atmospheres containing

flammable or explosive gases. Arcs and heating resulting from

switching may cause fire or explosion.

• Be sure to prevent the foreign materials such like a scrapped cable

intrusion in to the switch when wiring. Otherwise, there is the

possibility of spoiling the normal operation.

• Never wire to the wrong terminals.

• Do not store or use the switch with following place.

Where the temperature fluctuates greatly

Where the humidity is very high and condensation may occur.

Where the vibration is too much

Where receiving direct sunshine.

Where receiving salty wind.

• Do not disassemble and/or modify the switch at anytime.

Otherwise, there is the possibility of spoiling the normal operation.

• Do not apply the force such like deformation and/or degeneration

to the switch. Otherwise, there is the possibility that the switch

functions may be spoiled.

Environment

• Take special care to use where there is fine powder, mud and/or

foreign materials stacking. And check the condition with actual

using condition before using. Then use without a performance

problem.

• This switch is only for indoor use. If it is used in outdoor, it may be

cause of switch failure.

• Do not keep the Switch in locations with corrosive gas, such as

sulfuric gas (H2S or SO2), ammonium gas (NH3), nitric gas (HNO3),

or chlorine gas (Cl2), or high temperature and humidity. Otherwise,

contact failure or corrosion damage may result.

• Seal material may deteriorate if a Switch is used outdoor or where

subject to special cutting oils, solvents, or chemicals. Always

appraise performance under actual application conditions and set

suitable maintenance and replacement periods.

• Install Switches where they will not be directly subject to cutting

chips, dust, or dirt. The Actuator and Switch must also be protected

from the accumulation of cutting chips or sludge.

• Constantly subjecting a Switch to vibration or shock can result in

wear, which can lead to contact interference with contacts,

operation failure, reduced durability, and other problems.

Excessive vibration or shock can lead to false contact operation or

damage. Install Switches in locations not subject to shock and

vibration and in orientations that will not produce resonance.

• The Switches have physical contacts. Using them in environments

containing silicon gas will result in the formation of silicon oxide

(SiO2) due to arc energy. If silicon oxide accumulates on the

contacts, contact interference can occur. If silicon oil, silicon filling

agents, silicon cables, or other silicon products are present near

the Switch, suppress arcing with contact protective circuits (surge

killers) or remove the source of silicon gas.

Installing the Switch

• To install the Switch, make a mounting panel, as shown in the

following diagram, and tighten screws using the correct torque.

Precautions for Safe Use

Precautions for Correct Use

Not Suitable

Suitable

+0.2

Front Mountig : Four, 5.2

dia. holes

or M5 tapped holes

Rear Mountig : Four, 6.2

dia. holes

±0.15

30.2

58.7±0.15

WLRCL Datasheet(PDF) 44 Page - Omron Electronics LLC

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