Datasheet

WL-N/WLM-N
46
Using a WL@-2N Switch Mounted from the Side
If you replace a previous Switch with a WL@-2N-N Switch, a Mounting
Plate (sold separately) is available to maintain mounting compatibility.
If you use the Mounting Plate, the Switch mounting holes and actuator
position will be compatible. (The position of the dog will not need to
be changed.)
Operation
• Carefully determine the position and shape of the dog or cam so that
the actuator will not abruptly snap back, thus causing shock. In order
to operate the Limit Switch at a comparatively high speed, use a dog
or cam that keeps the Limit Switch turned ON for a sufficient time so
that the relay or valve will be sufficiently energized.
• The method of operation, the shape of the cam or dog, the
operating frequency, and the travel after operation have a large
influence on the durability and operating accuracy of the Limit
Switch. The cam or dog must be smooth in shape.
• Appropriate force must be imposed on the actuator by the cam or
dog in both rotary operation and linear operation.
If the dog touches the lever as shown below, the operating position
will not be stable.
• Unbalanced force must not be imposed on the actuator. Otherwise,
wear and tear on the actuator may result.
• With a roller actuator, the dog must touch the actuator at a right
angle. The actuator or shaft may deform or break if the dog touches
the actuator (roller) at an oblique angle.
• Make sure that the actuator does not exceed the OT (overtravel)
range, otherwise the Limit Switch may malfunction. When mounting
the Limit Switch, be sure to adjust the Limit Switch carefully while
considering the whole movement of the actuator.
• The Limit Switch may soon malfunction if the OT is excessive.
Therefore, adjustments and careful consideration of the position of
the Limit Switch and the expected OT of the operating body are
necessary when mounting the Limit Switch.
• When using a pin-plunger actuator, make sure that the stroke of the
actuator and the movement of the dog are located along a single
straight line.
Others
• For long term (over a year) storage, check according to Operating
characteristics, Contact resistance and Dielectric strength at least.
And check with using condition.
• The durability of the Switch is greatly affected by operating
conditions.
Evaluate the Switch under actual working conditions before
permanent installation and use the Switch within a number of
switching operations that will not adversely affect the SwitchÅfs
performance.
23
64
30.2
58.7
WL@-2N
Mounting Plate
Replacing a Switch
with the WL@-2N-N
Mounting Plate
Set
contents
Model WLN-P001
Plate mounting
bolts (2)
Plate (1)
Switch mounting
bolts (2)
Incorrect Correct
Snapped
back
Abruptly
actuated
Incorrect Correct
Snapped
back
Abruptly
actuated
Incorrect
Dog Dog
Correct
Incorrect Correct
RollerRoller
Dog Dog
CorrectIncorrect
Dog
Dog
Operating
body
Install a stopper.
PT (Pretravel)
FP (Free position)
OP (Operating position)
OT (Overtravel)
TTP (Total travel position)
Reference line
70% of
rated OT
100% of
rated OT
Distance to the
optimum setting range.
Optimum setting range
Correct
Stopper
Incorrect Correct
Operating
body
Operating
body