Datasheet

WL-N/WLM-N
45
Tightening Torque
• If screws are too loose they can lead
to an early malfunction of the Switch,
so ensure that all screws are
tightened using the correct torque.
• In particular, when changing the
direction of the Head, make sure that
all screws are tightened again to the
correct torque. Do not allow foreign
objects to fall into the Switch.
Wring
In the case of mounting screw
• Use M3.5-nylon insulation covered crimp terminals (round type) for
wiring.
Ex.) V1.25-M3.5(RAP1.25-3.5) (J.S.T. Mfg. Co.,Ltd.)
• Appropriate wire size is AWG16 (1.25mm
2
).
• Do not supply electric power when wiring.
Otherwise electric shock may result.
• Do not pull out the wires with excessive force.
It may cause of coming off the wire.
• Use crimp terminals for wiring.
• In the case of lump unit, to avoid interference
between lump unit and crimp terminals, wire
according to right wiring figure.
Attach the lump unit spring to terminal screw
certainly otherwise itÅfs possible to be destroyed
or shorted.
• The ground terminal is only installed on models
with ground terminals.
In the case of prewired connecter and direct connecter
• Holding the connecter certainly when pulling connecter.
• Don’t pull the cable holding it.
How to handle
Changing direction of the head
• By removing the screws in the two corners of the head, the head
can be set any of four directions. Be sure to change the plunger for
internal operations at the same time.
Built-in Switch
• Do not remove or replace the built-in switch.
Overtravel Markers
• All Switches with Roller Lever Actuators except for Switches with
Fork Lever Locks and Low-temperature Switches have a set
position marker plate.
• To allow the roller lever type actuator to travel properly, set the
roller lever according to the dog or cam stroke so that the
arrowhead of the lever is positioned within overtravel markers as
shown.
Connectors
• Tighten the connector with the appropriate torque to prevent
deformation.
• Use the OMRON type SC connector series, which is prepared
separately, suitable for outer diameter of cable and inner diameter
of seal rubber.
• Make sure to wrap the connector with the seal tape, except the
connector which has O-ring, to keep the sealability.
• To conform to CSA, use a CSA certified water tight treated conduit
hub.
• Even when the connector is assembled and set correctly, the end
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.
Microload Applications
• The switch contacts can be used both for standard loads and
microloads, but once a contact has been used to open and close a
load it can no longer be used for lower loads. Doing so will damage
the contact surface and reduce contact reliability.
• If an inrush current or other sudden load occurs during a switch
operation, the switch will begin to degrade severely which can
result in reduced durability.
Use a contact protection circuit if required.
Indicator
Indicator-equipped switch has contacts and indicator in parallel.
When contacts are open, leakage current flows through the indicator
circuit and may cause load's malfunction.
Please check the load's OFF current before use the indicatorequipped
switch. Leakage current may cause load malfunction (i.e., the load
may remain ON). Make sure that the load operating current is higher
than the leakage current.
For countermeasures, refer to technical support on your OMRON
website.
Terminal Plate
• By using the Terminal Plate (sold separately), as shown in the
following diagram, the Switch can be used as a single-polarity
double-break switch.
No. Type Torque Screw type
(1) Head mounting screw
0.78 to 0.88
N•m
M3.5 screw
(2) Cover mounting screw
1.18 to 1.37
N•m
M4 screw
(3)
Allen-head bolt
(for securing the roller lever)
4.90 to 5.88
N•m
M5 hexagon socket
head cap screw
(3)
Allen-head bolt
(for securing the adjustable
rod lever)
0.88 to 1.08
N•m
M8 hexagon socket set
screw
(4) Terminal screw
0.59 to 0.78
N•m
M3.5 screw
(5) Connector
1.77 to 2.16
N•m
G1/2orPg13.5orM20or
1/2-14NPT
(6) Unit mounting screw
4.90 to 5.88
N•m
M5 hexagon socket
head cap screw
(3)
(4)
(2)
(1)
(6)
(5)
Excessive OT
Setting range
Shortage OT
Setting range
Excessive OT
Arrowhead
Screw down
Head
Terminal Plate
Attach the Terminal Plate
so that the “COM” mark is
oriented as shown on the left.
Terminal Plate Mounting Diagram
(with Two Terminal Screws Removed)
Model WL-N TERMINAL PLATE