Safety Precautions - Omron HL-5030 Manual

Safety Precautions

For details, be sure to read Safety Precautions for All Limit Switches.
Precautions for Correct Use
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.
Not Suitable
• 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 ) due to arc energy. If silicon oxide accumulates on the
2
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.
Wiring
Wiring Procedure
1. Loosen the cover mounting screws and remove the cover.
2. Disconnect the rubber connector from the box conduit and pressfit
a solderless terminal. The following solderless terminals are
available.
3. After inserting the solderless terminal into the Switch, tighten the
terminal screws securely.
4. After wiring the Limit Switch, insert the rubber connector into the
groove of the box securely.
5. Tighten the three mounting screws evenly. The optimum tightening
torque for each screw is 0.49 to 0.59 N·m.
Cover
Terminal
http://www.ia.omron.com/
Suitable
Cover mounting screw
Rubber connector
Applicable Lead Wires
Wire name
Number of
conductors
2
Vinyl cabtire cord
3
(VCTF)
4
Vinyl cabtire cable
2
(VCT)
600-V vinyl-insulated
2
sheath cable (VVF)
Note: Do not use wires containing silicone, otherwise a contact failure may
result.
Applicable Solderless Terminal
The following solderless terminals are available. Do not use fork or
any other type of terminals, otherwise an accidental disconnection
resulting in a ground fault may result.
Terminal with insulated grip
6.4 max.
14 max.
3.0 to
3.7 dia.
Appropriate Tightening Torque
A loose screw may result in a malfunction. Be sure to tighten each
screw to the appropriate tightening torque as shown below.
No. Type
1 Head mounting screw
2 Cover mounting screw
3 Allen-head bolt
4 Terminal screw (M3 screw)
Switch mounting screw
5
(M5 Allen-head bolt)
Note: If the head direction has been changed, check the torque of each screw
and make sure that the screws are free of foreign substances, and that
each screw is tightened to the proper torque.
1
2
5
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
HL-5000
Applicable wire
Conductor External
size size
0.75 mm 2
Round, 6 to 9
dia.
0.75 mm 2 Flat, 9.4
max.
1 dia./1.2 dia./
1.6 dia.
6.4 max.
14 max.
3.0 to
3.7 dia.
Appropriate
tightening torque
0.49 to 0.59 N·m
0.49 to 0.59 N·m
4.90 to 5.88 N·m
0.49 to 0.59 N·m
4.90 to 5.88 N·m
3
4
4