Datasheet

9
D4E-@N
Safety Precautions
Refer to Safety Precautions for All Limit Switches.
Operating Environment
• 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
(SiO
2) 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.
• Do not solder the screw terminals.
• Sealing materials may deteriorate when used outdoors or when
exposed to cutting oil, solvents, or chemicals. Check this on actual
equipment and, if deterioration is foreseen, consult your OMRON
representative in advance.
• If the one-touch connector is to be mounted onto the switch body,
lightly push up the fitting so that the switch body can then be
inserted into the clamp.
• Be sure that the clamp is inserted to the full depth, because the
Switch will not function properly if one of the clamps is improperly
inserted.
• If the clamp is properly inserted up to the full depth, it will not slide
out easily. Be sure to carefully confirm all the above items.
• Be sure to connect a fuse with a breaking current 1.5 to 2 times the
rated current to the Limit Switch in series in order to protect the
Limit Switch from damage due to short-circuiting. When using the
Limit under the EN ratings, use a gI or gG 10-A fuse that conforms
to IEC60269.
Mounting
• Secure the Switch with two M4 screws and washers. The tightening
torque applied to each terminal must be 1.18 to 1.37 N·m. Tighten
the screws to the specified torque. An excessive tightening torque
may damage the Switch and cause a malfunction.
• When mounting the panel mount-type Switch with screws on a side
surface, remove the hexagonal nuts from the actuator.
• When mounting the panel mount type on a panel, tighten the
hexagonal nuts of the actuator to a torque less than 7.85 N·m.
• Operating method, shape of cam or dog, operating frequency, and
the overtravel (OT) have significant effect on the service life and
precision of the Limit Switch. Make sure that the shape of the cam
is smooth enough.
• Check that OT has a sufficient margin. The actual OT should be
rated OT × 0.7 to 1.
• Do not change the operating position by remodeling the actuator.
Wiring
When wiring screw terminals, M3-size round solderless terminals with
an insulation tube is recommended. The conductor size should be
0.75 mm
2
and cable diameter should be 7 mm.
Precautions for Correct Use
Not Suitable Suitable
(1) Insert the switch
body
(2) Lightly push up the filling on the
left and right side alternately.
Switch body
Clamp fitting
Confirm
visually
33
±0.15
Two, 4.3 dia. or M4 hol
e
Mounting Holes
14.5
±0.2
dia.
Mounting Hole
L
l F
B
D dia.
dz dia.
dz dia.: 3.2
D dia.: 1.9
B: 5.2
L: 16.4
F: 5.8
l: 8.0 (mm)
Round solderless terminals
Wiring Method
Round solderless terminal