Omron WL - User manual

Two-circuit Limit Switch WL F-57
Limit
Switches
Two-circuit Limit Switch
WL
Wide Selection of Two-circuit Limit Switches
• A wide selection of models are available, including the overtrav-
el models with greater OT, lamp-equipped models for checking
operation, low-temperature and heat-resistant models, and mi-
croload models.
• Microload models are added to the product lineup.
• Meets EN/IEC standards (only Switches with ground terminals).
• Switches with ground terminals have the CE marking.
Model Number Structure
■Model Number Legend
General-purpose Models/Environment-resistant Models
1. Electrical Rating
Blank: Standard
01: Micro
2. Actuator and Head Specifications
Symbol Actuator type Switches without levers
CA2 Roller lever: Standard model (R38) WLRCA2
CA2-7 Roller lever: Standard, standard model (R50) WLRCA2
CA2-8 Roller lever: Standard, standard model (R63) WLRCA2
H2 Roller lever: Overtravel, general-purpose model, 80°WLRH2
G2 Roller lever: Overtravel, high-sensitivity, 80°WLRG2
CA2-2N Roller lever: Overtravel, 90°WLRCA2-2N
GCA2 Roller lever: High-precision WLRGCA2
CA12 Adjustable roller lever: Standard WLRCA2
H12 Adjustable roller lever: Overtravel, general-purpose model, 80°WLRH2
G12 Adjustable roller lever: Overtravel, high-sensitivity, 80°WLRG2
CA12-2N Adjustable roller lever: Overtravel, 90°WLRCA2-2N
CL Adjustable rod lever: Standard WLRCL
HL Adjustable rod lever: Overtravel, general-purpose model, 80°, 25 to 140 mm WLRH2
HLAL4 Adjustable rod lever: Overtravel, general-purpose model, 80°, 350 to 380 mm WLRH2
GL Adjustable rod lever: Overtravel, high-sensitivity, 80°, 25 to 140 mm WLRG2
CL-2N Adjustable rod lever: Overtravel, 90°, 25 to 140 mm WLRCA2-2N
HAL5 Rod spring lever: Protective, Overtravel, general-purpose model, 80°WLRH2
CA32-41 Fork lever lock: Protective, WL-5A100 WLRCA32
CA32-42 Fork lever lock: Protective, WL-5A102 WLRCA32
CA32-43 Fork lever lock: Protective, WL-5A104 WLRCA32
D Plunger: Top plunger ---
D2 Plunger: Top-roller plunger ---
D28 Plunger: Sealed top-roller plunger ---
D3 Plunger: Top-ball plunger ---
SD Plunger: Horizontal plunger ---
1 2 3 4 5 6 7 8 9 10
WL@@-@@@@@@@@

F-58 Two-circuit Limit Switch WL
Symbol Actuator type Switches without levers
SD2 Plunger: Horizontal-roller plunger ---
SD3 Plunger: Horizontal-ball plunger ---
NJ Flexible rod: Coil spring ---
NJ-30 Flexible rod: Coil spring, multi-wire ---
NJ-2 Flexible rod: Coil spring, resin rod ---
NJ-S2 Flexible rod: Steel wire ---
3. Environment-resistant Model Specifications
Blank: Standard
RP: Corrosion-proof (See note 1.)
P1: Weather-resistant (See note 1.)
4. Built-in Switch Specifications
Blank: General-purpose built-in switch
55: Hermetically-sealed built-in switch (See note 1.)
5. Temperature Specifications
Blank: Standard: –10°C to 80°C
TH: Heat-resistive: 5°C to 120°C (See note 1.)
TC: Low temperature: –40°C to 40°C (See note 1.)
6. Special Hermetic Model Specifications
Blank: No cables or molding
139: General-purpose built-in switch with cables attached and molded conduit opening and cover (cover cannot be removed).
(See note 1.)
140: Airtight built-in switch with cables attached and molded conduit opening, cover, and case cover (cover cannot be removed).
(See note 1.)
141: Airtight built-in switch with cables attached and molded conduit opening, cover, and case cover (cover cannot be removed).
The Head opening is created to protect it from cutting powder. (See note 1.)
145: Airtight built-in switch with cables attached and molded conduit opening, cover, and case cover (cover cannot be removed, Head
can be mounted in any of 4 directions).
The Head opening is created to protect it from cutting powder. (See note 1.)
RP40: Airtight built-in switch with cables attached, SC Connector can be used, molded conduit opening, cover, and case cover
(cover cannot be removed, Head direction can be changed). (See note 1.)
RP60: Airtight built-in switch with cables attached, fluorine rubber-molded conduit opening, cover, and case cover
(cover cannot be removed, Head direction cannot be changed). (See note 1.)
7. Conduit Size, Ground Terminal Specifications (See note 2.)
Blank: G 1/2Without ground terminal
G1: G 1/2With ground terminal
G: Pg13.5 With ground terminal
Y: M20 With ground terminal
TS: 1/2-14NPT With ground terminal
8. Indicator Type
Element Voltage Leakage Current
LE: Neon lamp 125 VAC Approx. 0.6 mA
250 VAC Approx. 1.9 mA
LD: LED 10 to 115 VAC/VDC Approx. 0.5 mA
9. Lamp Wiring
2: NC connection: Light-ON when operating
3: NO connection: Light-ON when not operating
10.Lever Type
Blank: Standard lever
A: Double nut lever
Note: 1. For information on applicable models, see page 60.
2. Switches with ground terminals meet EN/IEC standards (and have the CE marking).
Ground Terminal Models 1: Type of actuator
2: Conduit opening size
The models differ depending on the size of the case’s conduit thread.
12
WL -
Model Conduit opening size
G1 G 1/2
G Pg 13.5
YM20
TS 1/2-14NPT

Two-circuit Limit Switch WL F-59
Limit
Switches
Sensor I/O Connector Models
1. Electrical Rating
Blank: Standard
01: Microload
2. Actuator Type
CA2: Roller lever: Standard
GCA2: Roller lever: High-precision
H2: Roller lever: Overtravel, general-purpose
G2: Roller lever: Overtravel, high-sensitivity
D2: Plunger: Top-roller plunger
D28: Plunger: Sealed top-roller plunger
3. Built-in Switch Type
Blank: Standard
55: Hermetically sealed
4. Wiring Specifications
K13A: Direct-wired Connector
(2-core: AC, NO wiring, connector pins No. 3, 4)
K13: Direct-wired Connector
(2-core: DC, NO wiring, connector pins No. 3, 4)
K43A: Direct-wired Connector (4-core: AC)
K43: Direct-wired Connector (4-core: DC)
-M1J: Pre-wired Connector (See note 2.)
(2-core: DC, NO wiring, connector pins No. 3, 4)
-M1GJ: Pre-wired Connector (See note 2.)
(See note 1.) (2-core: DC, NO wiring, connector pins No. 1, 4)
-M1JB: Pre-wired Connector (See note 2.)
(See note 1.) (2-core: DC, NC wiring, connector pins No. 3, 2)
-AGJ03: Pre-wired Connector (See note 2.) (4-core, AC)
-DGJ03: Pre-wired Connector (See note 2.) (4-core, DC)
(See note 1.)
-DK1EJ03: Pre-wired Connector (See note 2.)
(See note 1.) (3-core: DC, NO wiring, connector pins No. 2, 3, 4)
Note: 1. Models with pre-wired connectors and DC specifications
have EN/IEC approval.
2. With 0.3-m cable attached.
12 34
WL - LD
Direct-wired Connector Pre-wired Connector

F-60 Two-circuit Limit Switch WL
Spatter-prevention Models
1. Electrical Rating
Blank: Standard
01: Microload
2. Actuator Type
CA2: Roller lever: Standard model
GCA2: Roller lever: High-precision model
H2: Roller lever: Overtravel, general-purpose model
G2: Roller lever: Overtravel, high-sensitivity model
D28: Plunger: Sealed top-roller plunger
3. Built-in Switch Type
Blank: Standard
55: Hermetically sealed
4. Indicator Lamp
Blank: None
LD: LED indicator lamp (AC/DC common)
LE: Neon Lamp
5. Wiring Specifications
-M1J-1: Pre-wired Connector (See note.)
(2-core: DC, NO wiring, connector pins No. 3, 4)
-M1GJ-1: Pre-wired Connector (See note.)
(2-core: DC, NO wiring, connector pins No. 1, 4)
-DGJS03: Pre-wired Connector (See note.) (4 core, DC)
Note: With 0.3-m cable attached.
Ordering Information
■Classification
12 34 5
WL - S
Specifications Standard Overtravel High-
precision Features Page
Actuators Roller lever Yes Yes Yes Five models: Roller lever, adjustable roller le-
ver, adjustable rod lever, fork lever lock, rod
spring lever.
77 to
94
62 to
64
69, 73
to 75
Plunger Yes --- --- Six models: Top plunger, top-roller plunger,
top-ball plunger, horizontal plunger, horizon-
tal-roller plunger, horizontal-ball plunger.
Flexible rod Yes --- --- Two models: coil spring and steel wire.
Load/
contact
Standard load SPST-NO/
SPST-NC
type
Yes Standard models use a two-circuit double-
break switch.
Microload SPST-NO/
SPST-NC
type
Yes Specifications include gold-plated contacts.
Environ-
ment-re-
sistant
models
(See
note 3.)
Airtight-seal WL@-55 Yes (Cannot be used with heat-resistive
and low-temperature models.)
Uses an airtight-sealed built-in switch. 66, 76
Hermet-
ic seal
Molded
terminals
WL@-139 Lead wires are attached.
The case cover and conduit section are mold-
ed from epoxy resin to improve sealing perfor-
mance.
WL@-140
WL@-141
WL@-145
Lead wires are attached.
The case is filled with epoxy resin, to ensure
high sealing performance.
The Head opening is protected from cutting
powder. (WL@-141 and -145 models)
Only WLG2, WLCA2, and WLGCA2 can be
fabricated. (WL@-141 models.)
Anti-cool-
ant
WL@-RP40 The connector can be removed, so it is possi-
ble to use flexible wires in the cable. The
Head can be removed.
WL@-RP60 Rubber parts are made from fluorine rubber.
The Head cannot be removed.
Spatter-prevention WL@-S Yes To improve spatter prevention during welding,
a heat-resistant resin is used, and screws
and rollers are all made from stainless steel.
67, 69,
71, 73,
76, 89

Two-circuit Limit Switch WL F-61
Limit
Switches
Note: 1. Do not expose to extreme changes in temperature.
2. Standard Models: Operate on each side at an angle of 45°.
Possible to set to one-side operation on either side.
Pretravel (PT) is 15°.
Overtravel Models: Standard and high-sensitivity models operate on each side at an angle of 80°.
Not possible to set to one-side operation.
-2N Series operate on each side at an angle of 90°.
Possible to set to one-side operation on either side.
High-precision Models: Operate on each side at an angle of 45°.
Possible to set to one-side operation on either side.
Pretravel (PT) is 5°.
3. When ordering, add the suffix for the environment-resistant model or indicator specifications required according to the operating environ-
ment and purpose.
4. The overtravel model (-2N Series), fork lever lock model (WLCA32-41 to 44), horizontal plunger (WLSD@) model, heat-resistive model,
low-temperature model, and lamp-equipped model cannot be used with the corrosion-proof model.
5. Outdoor specifications are available for some standard models. Consult your OMRON representative for details.
6. Outdoor specifications are only available for general models and high-sensitivity models.
Environ-
ment-re-
sistant
models
(See
note 3.)
Heat-resistive WL@-TH Yes (Cannot be used with airtight, hermet-
ic, low-temperature, corrosion-proof, or
lamp-equipped models.)
To improve heat resistance, silicone rubber is
used for rubber parts and for the built-in
switch.
The operating temperature range is +5°C to
120°C.
66
Low-temperature WL@-TC Yes (Cannot be used with airtight, hermet-
ic, heat-resistive, corrosion-proof, or lamp-
equipped models.)
To improve low temperature resistance, sili-
cone rubber is used.
The operating temperature range is –40°C to
40°C.
Corrosion-proof
(See note 4.)
WL@-RP Yes (Cannot be used with lamp-equipped
models.)
Diecast parts such as the switch box are
made of corrosion-proof aluminum. Rubber-
sealing parts are made of fluorine rubber and
exposed nuts and screws are made of stain-
less steel. These all aid in resisting oil, chem-
icals and adverse weather conditions.
Outdoor specifica-
tions
WL@-P1 ---
(See note 5.)
Ye s
(See note 6.)
--- Rotary shafts are made of unquenched (i.e.,
untreated) stainless steel to improve corro-
sion resistance. Exposed nuts and screws
are made of stainless steel and rubber seal-
ing parts of silicone rubber. These factors all
combine to create a product which is resistant
to temperature changes and adverse weather
conditions.
Lamp-equipped WL@-LE Yes Operating status can be checked at a glance.
Lit when operating and not lit when not oper-
ating.
WL@-LE: 100 VAC/VDC min.
WL@-LD: 115 VAC/VDC min. (Refer to
page 71 for detailed ratings.)
64, 72,
73, 75,
86
WL@-LD Yes
Relevant pages Pages 77 to 94 --- ---
Specifications Standard Overtravel High-
precision Features Page

F-62 Two-circuit Limit Switch WL
■List of Models
General-purpose Models
These Limit Switches are two-circuit double-break switches housed in rugged diecast, thus making it an oil-tight, waterproof and dustproof con-
struction (complies with IP67).
In addition to the standard models, microload models are also available.
A wide range of actuators with a range of functions are available; rotating lever, plunger, flexible rod etc.
The rubber material in the standard models is designed to be resistant to water and most oils.
Roller Lever Models: Short, Medium, and Long Lever Models
Note: 1. For the approved standards file numbers, refer to page 69.
2. For external dimensions and other information, refer to pages 77 to 94.
3. One-side operation means that three operational directions can be selected electrically, according to the change in direction of the oper-
ating plunger. Those models for which one-side operation is impossible can only operate on both sides. For details, see page 94.
Type Total travel (TT) Features Actuator (See note 2.)
Standard One-side operation is possi-
ble. (See note 3.)
Head can be mounted in any
of the four directions.
WLCA2 WLCA2-7 WLCA2-8
Over-
travel
General One-side operation is impos-
sible. (See note 3.)
Head can be mounted in any
of the four directions.
WLH2 --- ---
High-sensi-
tivity
One-side operation is possi-
ble. (See note 3.)
Head can be mounted in any
of the four directions.
WLG2 --- ---
Side-instal-
lation
One-side operation is possi-
ble. (See note 3.)
Head can be mounted in any
of the two directions. (When
the Head can be mounted
horizontally, the Head can be
mounted in any of the four di-
rections.)
WLCA2-2N --- ---
High-precision One-side operation is possi-
ble. (See note 3.)
Head can be mounted in any
of the four directions.
WLGCA2 --- ---
WL-1A100 Roller
Lever: Short
lever (R38)
WL-1A200 Roller
Lever: Medium
lever (R50)
WL-1A300 Roller
Lever: Long
lever (R63)

Two-circuit Limit Switch WL F-63
Limit
Switches
Adjustable Roller Levers and Adjustable Rod Levers
Note: 1. For the approved standards file numbers, refer to page 69.
2. For external dimensions and other information, refer to pages 77 to 94.
3. One-side operation means that three operational directions can be selected electrically, according to the change in direction of the oper-
ating plunger. The operating plunger is set for operation on both sides before delivery. Those models for which one-side operation is im-
possible can only operate on both sides. For details, see page 94. The operational plunger is factory-set to both sides.
Rod Spring Levers and Fork Lever Locks
Note: 1. For the approved standard file numbers, refer to page 69.
2. For external dimensions and other information, refer to pages 77 to 94.
3. One-side operation means that three operational directions can be selected electrically, according to the change in direction of the oper-
ating plunger. The operating plunger is set for operation on both sides before delivery. Those models for which one-side operation is im-
possible can only operate on both sides. For details, see page 94. The operational plunger is factory-set to both sides.
4. The fork lever lock is configured so that the dog pushes the lever to reverse the output and this reversed state is maintained even after
the dog continues on. If the dog then pushes the lever from the opposite direction, the lever will return to its original position.
Type Total Travel (TT) Features Actuator (See note 2.)
Standard One-side operation possible. (See note 3.)
Head can be mounted in any of the four directions.
WLCA12 ---
--- WLCL (WL-4A100)
Overtrav-
el
General One-side operation possible. (See note 3.)
Head can be mounted in any of the four directions.
WLH12 WLHL (WL-4A100)
WLHAL4 (WL-3A100)
High-sensi-
tivity
One-side operation possible. (See note 3.)
Head can be mounted in any of the four directions.
WLG12 WLGL (WL-4A100)
Side-instal-
lation
One-side operation is possible. (See note 3.)
Head can be mounted in any of the two directions.
(When the Head can be mounted horizontally, the
Head can be mounted in any of the four directions.)
WLCA12-2N WLCL-2N (WL-4A100)
WL-2A100
Adjustable
Roller Lever
WL-4A100
Adjustable Rod
Lever (Adjustable
length: 25 to
140 mm)
WL-3A100
(Adjustable length:
350 to 380 mm)
p
Type Total travel (TT) Features Actuator (See note 2.)
Protective Head can be mounted in any of the four directions. --- WLCA32-41
(WL-5A100)
WLCA32-42
(WL-5A102)
WLCA32-43
(WL-5A104)
Overtrav-
el
General One-side operation is possible. (See note 3.)
Head can be mounted in any of the four directions.
WLHAL5 ---
WL-3A200 Rod
Spring Lever
Fork Lever Locks:
WL-5A100,
WL-5A102,
WL-5A104

F-64 Two-circuit Limit Switch WL
Standard Plungers
Note: Sealed roller.
Standard Flexible Rods
Microload Models
A series of microload models has also been developed for the config-
urations outlined on pages 62 to 64. The model numbers become
WL01@. For example, WLCA2 becomes WL01CA2.
Lamp-equipped Models
Note: 1. In the model number, @indicates the actuator number. For example, CA2, D, NJ, etc.
2. The default setting is “light-ON when not operating.” Turn the lamp holder by 180°to change the setting to “light-ON when operating.”
Ordering Information
When ordering general-purpose indicator-equipped models insert the specifications number at the end of the basic model number.
E.g.: When a neon lamp is installed in a General-purpose/Standard Roller Lever Switch (WLCA2).
WLCA2 LE
↑↑
Standard Lamp
specifications
When ordering indicator-equipped molded terminal models, insert the specifications number at the end of the standard model number.
E.g.: When a Neon Lamp (WL-LE) is installed in a general-purpose molded terminal model (WLCA2-139).
WLCA2-139 LE 2
↑↑↑
Standard Lamp Lamp 2: NC connection: Light-ON when operating
specifications wiring 3: NO connection: Light-ON when not operating
Note: The indicator cover cannot be replaced on the molded terminals. In all cases the indicator does not light when the load is ON.
Type Actuators Model
Top WLD
WLD2
WLD28 (See note.)
WLD3
Horizontal WLSD
WLSD2
WLSD3
Top Plunger
Top-roller Plunger
Top-ball Plunger
Horizontal Plunger
Horizontal-roller
Plunger
Horizontal-ball Plunger
Actuators Model
Spring dia. 6.5 WLNJ
Spring dia. 4.8 WLNJ-30
Resin rod dia. 8.0 WLNJ-2
1.0-dia. wire WLNJ-S2
Coil spring
Steel wire
Operating
characteristics Rated voltage Leakage current Lamp-equipped Switch Lamp-equipped cover only
Neon lamp 125 VAC Approx. 0.6 mA WL@-LE (See note 1.) WL-LE
250 VAC Approx. 1.9 mA
LED 10 to 115 VAC/VDC Approx. 0.5 mA WL@-LD (See note 1.) WL-LD

Two-circuit Limit Switch WL F-65
Limit
Switches
Sensor I/O Connector Models
A reduction in the amount of wiring and parts makes maintenance easy and reduced wiring mistakes, in addition it’s already compact size for fitting
into areas of limited space.
Ordering Information
Note: 1. Standard Models: For standard models only one-side operation at an angle of 45°is possible.
Overtravel Models: Only one-side operation at an angle of 80°is possible. One-side operation only is not possible.
High-precision Models: Only one-side operation at an angle of 45°is possible, and pretravel (PT) is 5°, as opposed to 15°for standard
models.
2. For information other than that listed at the above, contact your OMRON representative.
3. The spatter-prevention models are only available as pre-wired connectors.
Direct-wired Connectors Note: 1. In the model number, @indicates the actuator number. For
example, Overtravel Model WLG2-LDK13.
2. The lamp is set to “light-ON when not operating” (NO con-
nection).
Pre-wired Connectors
Note: 1. In the model number, @indicates the actuator number. For example, Overtravel Model WLG2-LD-M1J.
2. The lamp is set to “light-ON when not operating” (NO connection).
Item Standard Overtravel High sensitivity
Actuators Rotating lever Yes Yes Yes
Plunger Yes --- ---
Load Standard load (SPST-NO/SPST-NC) Yes
Microload (SPST-NO/SPST-NC) Yes
High-precision models WL-@55 Yes
Spatter-prevention models (See note 3.) Yes
Lamp Yes
Type 2-core (NO) 4-core
Lamp-equipped WL@-LDK13 WL@-LDK43
Double-seal WL@-55LDK13 WL@-55LDK43
Type 2-core (NO) 2-core (NC) 4-core 3-core (NO)
Lamp-equipped WL@-LD-M1J WL@-LD-M1JB WL@-LD-DGJ03 WL@-LD-DK1EJ03
Double-seal WL@-55LD-M1J WL@-55LD-M1JB WL@-55LD-DGJ03 WL@-55LD-DK1EJ03

F-66 Two-circuit Limit Switch WL
Environment-resistant Models
Airtight, Hermetic Seal, Low-temperature, Heat-resistive, Corrosion-proof, and Weather-
resistant Models
Using the general-purpose model, six types of environment-resistant models can be created to meet a variety of difficult operating conditions. Se-
lect the model most appropriate to your operating environment.
Note: 1. Consult your OMRON representative for the microload WL01@models.
2. Use the SC Connector for the conduit opening.
3. The actuator can be created using the standard model.
4. The actuator can be created using the standard model. For WL-@141 and -145, only WLG2, WLCA2, WLGCA2, and WLH2 can be used.
Type Usage Environment-resistant construction Appropriate models
WL@-55 Airtight seal For use in locations
subject to splashes of
water and anti-coolant
Uses the W-10FB3-55 Airtight Built-in Switch. (See note 2.) All models except the
low-temperature and
heat-resistive models.
(See note 3.)
WL@-139 Hermetic seal
(molded terminals
and anti-coolant
models)
General-
purpose
built-in
switch
Connection lead wires:
Standard 5-m VCT (vi-
nyl cabtire cable) cable
attached. Finished di-
ameter: 11.5 mm, 4-
core.
The case cover and
conduit opening are
molded from epoxy
resin. The cover can-
not be removed.
All models except the
low-temperature and
heat-resistive models.
(See note 4.)
WL@-140 Hermeti-
cally-
sealed
built-in
switch
Connection lead wires:
Standard 5-m VCT ca-
ble, with high flexibility
and good anti-oil prop-
erties attached. Fin-
ished diameter:
11.5 mm, 4-core.
The case cover, cover
box and conduit open-
ing are molded from
epoxy resin. The cover
cannot be removed
(141, 145).
The Head opening is
protected from cutting
powder. (WL@-141)
WL@-141
WL@-145
WL@-RP40 The connector can be
removed, so it is possi-
ble to use flexible wires
in the cable.
WL@-RP60 Rubber parts are made
from fluorine rubber.
WL@-TC Low-temperature Can be used at a tem-
perature of
–40°C (The operating
temperature range is
–40°C to 40°C), but
cannot withstand icing.
Uses the general-purpose built-in switch.
Silicone rubber is used for rubber parts such as the O-ring,
gasket, etc.
All models except air-
tight, hermetic, heat-
resistive, corrosion-
proof, or lamp-
equipped models.
WL@-TH Heat-resistive Can be used in tem-
peratures of 120°C
(The operating temper-
ature range is 5°C to
120°C).
Uses a special built-in switch made from heat-resistant res-
in.
Silicone rubber is used for rubber parts such as the O-ring,
gasket etc.
All models except air-
tight, hermetic, low-
temperature, corro-
sion-proof, lamp-
equipped, nylon roller
(WLCA2-26N), seal
roller models, and res-
in rod (WLNJ-2) mod-
els.
WL@-RP Corrosion-proof For use in locations
subject to corrosive
gases and chemicals.
Diecast parts such as the switch box are made of corrosion-
proof aluminum.
Rubber sealing parts are made of fluorine rubber which aids
in resisting oil, chemicals and adverse weather conditions.
Exposed nuts and screws (except the actuator section) are
made of stainless steel.
Moving and rotary parts such as rollers are made of sin-
tered stainless steel or stainless steel.
All models except over-
travel model (-2N), fork
lever lock models
(WLCA32-41 to -43),
low-temperature, heat-
resistive, and lamp-
equipped models.
WL@-P1 Outdoor specifica-
tions
For use in parking lots
and other such outdoor
locations.
Rubber parts are made from silicone rubber, which has a
high-tolerance to deterioration over time, and changes in
temperature.
Rollers are made of stainless steel to improve corrosion re-
sistance.
Exposed nuts and screws are made of stainless steel.
Only the general-pur-
pose overtravel models
(WLH2/12), the over-
travel high-sensitivity
models (WLG2/12)
and some standard
models (e.g., WLCA2)
can be used. Excluding
heat-resistive models.

Two-circuit Limit Switch WL F-67
Limit
Switches
Ordering Information
Use the following as a guide when ordering environment-resistant
models.
E.g.: For a hermetic model of WLCA2
WLCA2 - 55
↑↑
Standard Specifications No.
An additional catalog is available for outdoor specifications models.
Spatter-prevention Models
These models are most effective in an arc welding line or places where cutting powder is spattered.
Standard Models
Note: Consult your OMRON representative for the microload WL01@models.
Levers/Lamp-equipped Covers
Switches Without Lever
WLRCA2-LES, WLRCA2-LDS
WLRH2-LES, WLRH2-LDS, WLRG2-LES
WLRG2-LDS
WLRGCA2-LES, WLRGCA2-LDS
Type Total travel (TT) Actuators Neon lamp LED
125 VAC 250 VAC 10 to 115 VAC/DC
Approx. 0.6 mA Approx. 1.9 mA Approx. 0.5 mA
Standard WLCA2-LEAS WLCA2-LDAS
WLCA2-LES WLCA2-LDS
Overtravel General Double nut lever WLH2-LEAS WLH2-LDAS
Allen-head lever WLH2-LES WLH2-LDS
High-sen-
sitivity
Double nut lever WLG2-LEAS WLG2-LDAS
Allen-head lever WLG2-LES WLG2-LDS
High-precision WLGCA2-LEAS WLGCA2-LDAS
WLGCA2-LES WLGCA2-LDS
One-side operation
is possible
Double nut lever
Allen-head lever
One-side operation
is impossible
One-side operation
is possible
Double nut lever
Allen-head lever
Type
Model Add an “R” to the product
number to order.
E.g.: WL@CA2-LES
WL-1H1100S
(in case of WLCA2-@,
WLGCA2-@)
WL-1A105S
(forward and backward le-
ver)
WL-1A103S
(forward and backward le-
ver)
WL-LES
(Neon Lamp)
WL-2H1100S
(in case of WLH2-@,
WLG2-@)
WL-LDS
(LED)
Without lever Complete Head
(lever with Head)
Double nut lever Allen-head lever Lamp-equipped
cover

F-68 Two-circuit Limit Switch WL
Head Models
Note: For the model number of Heads without lever, simply remove the numbers after WL-@H. For example, WL-1H1100 becomes WL-1H. WLH2
and WLH12 however, become WL-2H-1, and WLGCA2 becomes WL-1H-1. Other Head models are available, but must be ordered sepa-
rately.
Actuators Set model Head model Head model without lever
WLCA2 WL-1H1100 WLRCA2
WLGCA2 WL-1H1100-1 (See note.) WLRGCA2
WLG2 WL-2H1100 WLRG2
WLH2 WL-2H1100-1 (See note.) WLRH2
WLCA2-2N WL-6H1100 WLRCA2-2N
WLCA12 WL-1H2100 WLRCA2
WLG12 WL-2H2100 WLRG2
WLH12 WL-2H2100-1 (See note.) WLRH2
WLCA12-2N WL-6H2100 WLRCA2-2N
WLCL WL-4H4100 WLRCL
WLGL WL-2H4100 WLRG2
WLCL-2N WL-6H4100 WLRCA2-2N
WLD WL-7H100 ---
WLD2 WL-7H200
WLD3 WL-7H300
WLD28 WL-7H400
WLSD WL-8H100 ---
WLSD2 WL-8H200
WLSD3 WL-8H300
WLCA32-41 WL-5H5100 WLRCA32
WLNJ WL-9H100 ---
WLNJ-30 WL-9H200
WLNJ-2 WL-9H300
WLNJ-S2 WL-9H400
Roller lever
Adjustable roller lever
Adjustable rod lever
Top plunger
Horizontal plunger
Fork lever lock
Coil spring

Two-circuit Limit Switch WL F-69
Limit
Switches
Specifications
■Approved Standards
Note: Contact your OMRON representative for more information on approved models.
■Approved Standard Ratings
General-purpose Models
UL/CSA
Standard Models: A600
Microload Models:
0.1 A at 125 VAC, 0.1 A at 30 VDC
TÜV (EN60947-5-1)
(Only Ground Terminal Models are Approved)
Note: As an example, AC-15 2 A/250 V means the following:
Spatter-prevention Models
UL/CSA
LE (Neon Lamp) A300
LD (LED)
Agency Standard File No.
UL UL508 E76675
CSA CSA C22.2 No. 14 LR45746
TÜV Rheinland EN60947-5-1 R9551016
Rated voltage Carry current Current Volt-amperes
Make Break Make Break
120 VAC 10 A 60 A 6 A 7,200 VA 720 VA
240 VAC 30 A 3 A
480 VAC 15 A 1.5 A
600 VAC 12 A 1.2 A
Model Category/rating Thermal
current Indicator
WL@-@AC-15 2 A/250 V
DC12 2 A/48 V
10 A ---
WL01@AC-14 0.1 A/125 V
DC12 0.1 A/48 V
0.5 A ---
WL@-LE AC-15 2 A/250 V 10 A Neon lamp
WL01@-LE AC-14 0.1 A/125 V 0.5 A Neon lamp
WL@-LD AC-15 2 A/115 V
DC12 2 A/48 V
10 A LED
WL01@-LD AC-14 0.1 A/115 V
DC12 0.1 A/48 V
0.5 A LED
Application category AC-15
Rated operating current (Ie) 2 A
Rated operating voltage (Ue) 250 V
Rated
voltage Carry current Current Volt-amperes
Make Break Make Break
120 VAC 10 A 60 A 6 A 7,200 VA 720 VA
240 VAC 30 A 3 A
Rated voltage Carry current
115 VAC 10 A
115 VDC 0.8 A

F-70 Two-circuit Limit Switch WL
■Ratings
General-purpose Models/Environment-resistant Models
Standard Load Models
Note: 1. The above figures are for standard currents.
2. Inductive loads have a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
3. Lamp load has an inrush current of 10 times the steady-state current.
4. Motor load has an inrush current of 6 times the steady-state current.
5. For PC loads, use the microload models.
Note: Only for high-sensitivity overtravel models.
Microload Models
Operation within the three zones illustrated in the following diagram
will produce optimum performance.
Recommended Load Range: 5 to 30 VDC, 0.5 to 100 mA
Lamp-equipped Models
Type Rated
voltage Non-inductive load Inductive load
Resistive load Lamp load Inductive load Motor load
NC NO NC NO NC NO NC NO
Standard,
overtravel
(except high-sensi-
tivity models), and
high-precision
models.
125 VAC 10 A 3 A 1.5 A 10 A 5 A 2.5 A
250 VAC 10 A 2 A 1 A 10 A 3 A 1.5 A
500 VAC 10 A 1.5 A 0.8 A 3 A 1.5 A 0.8 A
8 VDC 10 A 6 A 3 A 10 A 6 A
14 VDC 10 A 6 A 3 A 10 A 6 A
30 VDC 6 A 4 A 3 A 6 A 4 A
125 VDC 0.8 A 0.2 A 0.2 A 0.8 A 0.2 A
250 VDC 0.4 A 0.1 A 0.1 A 0.4 A 0.1 A
Overtravel
(high-sensitivity
models)
125 VAC 5 A --- --- ---
250 VAC 5 A
125 VDC 0.4 A --- --- ---
250 VDC 0.2 A
Inrush current NC 30 A max. (15 A max. (See note.))
NO 20 A max. (10 A max. (See note.))
Rated voltage Resistive load
125 VAC 0.1 A
30 VDC
5 mW 0.8 W
Current (mA)
Voltage (VDC)
Neon lamp (WL-LE) LED (WL-LD)
125 VAC 250 VAC 10 to 115 VAC/DC
Approx. 0.6 mA Approx. 1.9 mA Approx. 0.5 mA
WLD28-LES WLD28-LDS

Two-circuit Limit Switch WL F-71
Limit
Switches
Sensor I/O Connector Models
Note: 1. The above figures are for standard currents.
2. Inductive loads have a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
3. Lamp load has an inrush current of 10 times the steady-state current.
4. Motor load has an inrush current of 6 times the steady-state current.
Spatter-prevention Models
Note: 1. The above figures are for standard currents.
2. Inductive loads have a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC).
3. Lamp load has an inrush current of 10 times the steady-state current.
4. Motor load has an inrush current of 6 times the steady-state current.
Type Rated
voltage Non-inductive load Inductive load
Resistive load Lamp load Inductive load Motor load
NC NO NC NO NC NO NC NO
For DC 12 VDC 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
24 VDC 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
48 VDC 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
115 VDC 0.8 A 0.8 A 0.2 A 0.2 A 0.8 A 0.8 A 0.2 A 0.2 A
For AC 115 VAC 1 A 1 A 1 A 1 A 1 A 1 A 1 A 1 A
Model Rated
current Non-inductive load Inductive load
Resistive load Lamp load Inductive load Motor load
NC NO NC NO NC NO NC NO
WL@-LES 125 VAC 10 A 3 A 1.5 A 10 A 5 A 2.5 A
250 VAC 10 A 2 A 1 A 10 A 3 A 1.5 A
125 VDC 0.8 A 0.2 A 0.2 A 0.8 A 0.2 A 0.2 A
250 VDC 0.4 A 0.1 A 0.1 A 0.4 A 0.1 A 0.1 A
WL@-LDS 115 VAC 10 A 3 A 1.5 A 10 A 5 A 2.5 A
12 VDC 10 A 6 A 3 A 10 A 6 A
24 VDC 6 A 4 A 3 A 6 A 4 A
48 VDC 3 A 2 A 1.5 A 3 A 2 A
Inrush current NC 30 A max.
NO 20 A max.
Operating temperature –10°C to 80°C (with no icing)
Operating humidity 95% max.

F-72 Two-circuit Limit Switch WL
■Characteristics
General-purpose Models/Environment-resistant Models
Note: 1. The above figures are initial values.
2. The figures in parentheses for dielectric strength, are those for the overtravel (high-sensitivity) model.
3. The values are calculated at an operating temperature of 5°C to 35°C, and an operating humidity of 40% to 70%. Contact your OMRON
sales representative for more detailed information on other operating environments.
4. 10,000,000 operations min. for general-purpose, high-sensitivity, and flexible rod overtravel models.
5. 500,000 operations min. for high-precision and outdoor specifications models. All microload models however, are 1,000,000 operations
min.
6. Except the flexible rod models. The shock resistance (malfunction) for microload models is 200 m/s2min.
7. For low temperature models this is –40°C to 40°C (no icing). For heat-resistive models the range is +5°C to 120°C.
Degree of protection IP67
Durability (See note 3.) Mechanical: 15,000,000 operations min. (See note 4.)
Electrical: 750,000 operations min. (See note 5.)
Operating speed 1 mm to 1 m/s (for WLCA2)
Operating frequency Mechanical: 120 operations/minute min.
Electrical: 30 operations/minute min.
Rated frequency 50/60 Hz
Insulation resistance 100 MΩmin. (at 500 VDC)
Contact resistance 25 mΩmax. (initial value)
Dielectric strength 1,000 VAC (600 VAC), 50/60 Hz for 1 min between non-continuous terminals.
2,200 VAC, 50/60 Hz for 1 min/Uimp 2.5 kV non-current-carrying metal part and ground.
2,200 VAC, 50/60 Hz for 1 min Uimp 2.5 kV between each terminal and non-current-carrying metal
part.
Rated insulation voltage (Ui)250 V (EN60947-5-1)
Switching overvoltage 1,000 V max. (EN60947-5-1)
Pollution degree (operating environment) 3 (EN60947-5-1)
Short-circuit protective device (SCPD) 10 A, fuse type gG or gI (IEC269)
Conditional short-circuit current 100 A (EN60947-5-1)
Conventional enclosed thermal current
(Ithe)10 A, 0.5 A (EN60947-5-1)
Protection against electric shock Class I
Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude (See note 6.)
Shock resistance Destruction: 1,000 m/s2min.
Malfunction: 300 m/s2min. (See note 6.)
Ambient temperature Operating: –10°C to 80°C (with no icing) (See note 7.)
Ambient humidity Operating: 95% max.
Weight Approx. 275 g (in the case of WLCA2)

Two-circuit Limit Switch WL F-73
Limit
Switches
■Contact Form
General-purpose Models
Standard (WL@)/Microload (WL01@) Models
Environment-resistant Models
Spatter-prevention Models
Standard Model
Lamp-equipped Models
Note: 1. Light-ON when operating means that the lamp lights when the Limit Switch contacts (NC) release, or when the actuator rotates or is
pushed down.
2. Light-ON when not operating means the lamp remains lit when the actuator is free, or when the Limit Switch contacts (NO) close when
the actuator rotates or is pushed down.
(White) (Blue)
(Black) (Red)
Light-ON when operating
(See note 1.)
Light-ON when not operating
(See note 2.)
Power supply
Built-in switch
Load
Internal circuit
WL-LE
WL-LD
Power supply
Built-in switch
Internal circuit
Load
WL-LE
WL-LD

F-74 Two-circuit Limit Switch WL
Internal circuit of Lamp-equipped Models
■Wiring Specifications of Sensor I/O Connector Models
Engineering Data
General-purpose Models/Spatter-prevention Models/Environment-resistant Models
Electrical Durability
Direct-wired Connector Pre-wired Connector
2-core 4-core 2-core 4-core 3-core
K13 (DC)
K13A (AC) K43 (DC) K43A (AC) M1J (DC) M1GJ (DC) M1JB (DC) DGJ03 (DC) AGJ03 (AC) DK1EJ03 (DC)
Built-in
switch Connec- tor Built-in switch Connec- tor Built-in switch Connec- tor Built-in switch Connec- tor Built-in switch Connec- tor Built-in switch Connec- tor Built-in switch Connec- tor
1 (NC) --- 1 (NC) 1 1 (NC) --- 1 (NC) --- 1 (NC) 3 1 (NC) 1 1 (NC) ---
2 (NC) --- 2 (NC) 2 2 (NC) --- 2 (NC) --- 2 (NC) 2 2 (NC) 2 2 (NC) 2
3 (NO) 3 3 (NO) 3 3 (NO) 3 3 (NO) 1 3 (NO) --- 3 (NO) 3 3 (NO) 3
4 (NO) 4 4 (NO) 4 4 (NO) 4 4 (NO) 4 4 (NO) --- 4 (NO) 4 4 (NO) 4
Neon lamp
WL-LE WL-LD
Rectifier stack
Resistance
Contact
spring Resist-
ance
Contact
spring Rated current
diode
Light-emitting
diode (LED)
Zener
diode
125 VAC
250 VAC
480 VAC
Switching current (mA)
Durability (x 10
4
operations)
Operating temperature: 5°C to 30°C
Operating humidity: 40% to 70%.
Operating frequency: 30 operations/min
cosφ= 1

Two-circuit Limit Switch WL F-75
Limit
Switches
Nomenclature
■General-purpose Models
Note: 1. The display for conduit threads has changed from PF1/2to G1/2, according to revisions of JIS B 0202. This is only a change in the display,
so the thread size and pitch have not changed. (Conduit threads Pg 13.5 and 1/2-14NPT are also available.)
2. By changing the orientation of the operational plunger, three operational directions can be selected electrically. (This is only possible with
general-purpose roller lever, adjustable roller lever, and adjustable rod lever models. For the overtravel models, only -2N Series models
have this function.)
Lamp-equipped Models
The operating status of the Switch can be checked using a neon
lamp of LED indictor.
Circuit checks and troubleshooting errors are easy done.
The built-in switch’s terminal screws are used to connect the lamp
terminal (indicator cover). Since the connection spring (coil spring) is
used for this connection, it will not be necessary to connect to the
lamp terminal. When a ground terminal is provided however, lead
wire method must be used.
WL-LD has a built-in rectifier stack, so it will not be necessary to
change the polarity.
The indicator cover is molded from diecast aluminum and has out-
standing sealing properties. Furthermore, regardless of whether the
power is connected or not, the operating status is shown (operating
or not operating), and indicators can be switched from light-ON when
operating and light-ON when not operating, by simply rotating the
lamp holder by 180°. (Molded terminals do not have this switching
capacity.)
The lamp-equipped models are ideal in locations using a conveyor
belt where items need to be checked, or locations that are difficult to
inspect for faults.
Set Position Marker Plate Roller
Requires maintenance (excessive overtravel)
Shaft Section Seal
Conduit Opening (See note 1.)
Head
Proper range
Proper range
Bearing
The bearing smooths the plunger movement.
Built-in Switch
Lever
Roller Lever Setscrew
Operational Plunger (See note 2.)
Cover Seal
Terminal Screws
M4 screws
Cover
Insulator
Cover Setscrew
A Phillips screw is used to ensure ease of use.
After operation, set the indicator needle on the
marker plate so that is in the convex section of the
bearing. For the WLD2, insert the needle so that is
is between the two main wires on the plunger.
Requires maintenance
(insufficient overtravel)
Requires maintenance
(excessive overtravel)
Head-mounting
Screws
The Head used in the roller lever type, adjustable
rod lever type, or horizontal plunger type (except
the -2N Series) can be mounted in any of the four
directions by removing the screws at the four cor-
ners of the Head.
By fitting an O-ring to the rotary shaft and with an
appropriate interference of the screws, high-seal-
ing properties are maintained.
The built-in switch (for all models except the micro-
load models) has an extended mechanical life of 15
million operations or more. The conduit threads are parallel threads for G 1
/2
tube and offer further increased sealing properties
when used in conjunction with the SC connector.
The roller is made of self-lubricating sintered stain-
less steel and boasts high resistance to wear.
The lever forged of anti-corrosive aluminium alloy
features high corrosion resistances and outstand-
ing ruggedness. With roller lever, adjustable rod
and flexible rod models, the actuator position can
be set anywhere within 360°. (The lever cannot be
mounted in the opposite direction.)
By using an O-ring as the cover seal, an optimum
squeeze can be obtained and high sealing proper-
ties are assured as well.
The insulator has outstanding insulation proper-
ties and prevents the generation of any gases
which may corrode the internal parts.
Indictor window
Light-emitting diode (LED)
Contact spring
Lamp holder
Light-ON when Operating
Light-ON when Not Operating
LED at bottom
LED at top

F-76 Two-circuit Limit Switch WL
■Environment-resistant Models
■Spatter-prevention Models
Airtight Built-in Switch
Four, M4 ±terminal screws
Hermetic Seal Model
Exclusive connector
Leads for molding
Filled with epoxy resin
Sealed by the rubber boot
of the plunger
Sealed by the resin molded
into the case cover
The lead wires are sealed to the Limit Switch with
resin, providing a hermetically sealed construction.
Note: Spatter means the Zn powder pro-
duced when welding.
Adhering spatter to the Limit Switch
may cause malfunction of lever or
lamp cover.
Roller, Roller Axis
Operating Lever
Lamp Cover
SUS304 is used for double nut.
Head Cap
Using Teflon prevents spatter from adhering.
Double Nut Lever
Screws
Using stainless steel prevents
spatter from adhering.
Melamine sinter-painted, it is easy to
peel off the spatter.
Heat-resistant resin is used for the
lamp cover.
By using spherical surface for the
display part, it disperses the direc-
tion of spatter.
SUS304 is used, preventing spatter
from adhering.
The lack of gap prevents spatter pow-
der from clogging.