WLCA27TS Omron, WLCA27TS Datasheet - Page 39

• Manufacturer Part Number: WLCA27TS
• Description: SWITCH
• Manufacturer: Omron

Specifications of WLCA27TS

• Rohs Compliant: YES
• Actuator Style: Roller Lever
• Operating Force Max: 10.2N
• Contact Voltage Ac Max: 125V
• Contact Voltage Dc Max: 8V
• Contact Current Ac Max: 10A
• Contact Current Dc Max: 10A
• Switch Terminals: Screw

Safety Precautions
Refer to Safety Precautions for All Limit Switches.
Operating Environment
• When a rod or wired-type actuator is used, do not touch the top end
• A short-circuit may cause damage to the Switch, so insert a circuit
• In order to meet EN approval ratings, use a 10-A fuse that
• When wiring terminal screws, use M4 round crimp terminals and
• When performing internal wiring there is a chance of short-circuit,
• Using an inappropriate connector or assembling Switches
• Even when the connector is assembled and set correctly, the end
• Seal material may deteriorate if a Switch is used outdoor or where
• Install Switches where they will not be directly subject to cutting
• Constantly subjecting a Switch to vibration or shock can result in
• The Switches have physical contacts. Using them in environments
of the actuator. Doing so may result in injury.
(Applicable models)
WLHAL5 and WL01HAL5 Rod Spring Levers and WLNJ-S2 and
WL01NJ-S2 Steel-wire Actuators.
breaker fuse, of 1.5 to 2 times the rated current, in series with the
Switch.
corresponds to IEC60269, either a gI or gG for general-purpose
types and spatter-prevention models only.
tighten screws to the recommended torque. Wiring with bare wires,
or incorrect crimp terminals, or not tightening screws to the
recommended torque can lead to short-circuits, leakage current,
and fire.
leakage current, or fire, so be sure to protect the inside of the
Switch from splashes of oil or water, corrosive gases, and cutting
powder.
incorrectly (assembly, tightening torque) can result in malfunction,
leakage current, or fire, so be sure to read the instruction manual
thoroughly beforehand.
of the cable and the inside of the Switch may come in contact. This
can lead to malfunction, leakage current, or fire, so be sure to
protect the end of the cable from splashes of oil or water and
corrosive gases.
subject to special cutting oils, solvents, or chemicals. Always
appraise performance under actual application conditions and set
suitable maintenance and replacement periods.
chips, dust, or dirt. The Actuator and Switch must also be protected
from the accumulation of cutting chips or sludge.
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.
containing silicon gas will result in the formation of silicon oxide
(SiO
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.
Not Suitable
2
) due to arc energy. If silicon oxide accumulates on the
Precautions for Correct Use
Precautions for Safe Use
Suitable
Using Switches for Micro Loads
Contact faults may occur if a Switch for a general-load is used to
switch a micro load circuit. Use switches in the ranges shown in the
diagram below. However, even when using micro load models within
the operating range shown here, if inrush current occurs when the
contact is opened or closed, it may increase contact wear and so
decrease durability. Therefore, insert a contact protection circuit
where necessary. The minimum applicable load is the N-level
reference value. This value indicates the malfunction reference level
for the reliability level of 60% (λ
The equation, λ
malfunction rate is less than 1/2,000,000 operations with a reliability
level of 60%.
30
24
12
60
5
0
0.1
= 0.5 × 10
Unusable
range
5 mW
0.16 mA
1 mA
1
–6
/operations indicates that the estimated
Operating range
for micro-load
models
60
).
10
800 mW
26 mA
100 mA 160 mA
Operating range
for standard
models
100
Current (mA)
WL/WLM
1,000
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