Omron WLCA2-TS-N Roller Lever Limit Switch
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A. Product Overview
The Omron WLCA2-TS-N belongs to Omron's WL-N and WL family of two circuit industrial limit switches. The series is designed to provide mechanical position detection in industrial machinery and automation systems.
The WLCA2 configuration uses a roller lever actuator, making it suitable for detecting moving machine parts, cams, pallets, workpieces and other mechanical objects that physically contact the roller. Omron describes roller lever models as suitable for a wide range of applications from positioning to workpiece detection.
Key characteristics include:
- Model: Omron WLCA2-TS-N
- Product type: Industrial limit switch
- Series: Omron WL-N and WL
- Actuator type: Roller lever
- Roller lever radius: R38 mm
- Contact configuration: SPST NO and NC
- Conduit connection: 1/2-14 NPT
- Protection rating: IP67
- Standard ambient operating temperature: minus 10°C to 80°C
- Standard load rating: up to 10 A at 125 VAC, 250 VAC and 500 VAC for resistive loads
- Mechanical durability for standard models: minimum 15 million operations
- Suitable for position, travel and workpiece detection
The Omron documentation specifies IP67 protection and mechanical durability of at least 15 million operations for the standard series.
B. Working Principle
The Omron WLCA2-TS-N works through mechanical contact between a moving object and the roller lever.
When a machine component, workpiece, cam or mechanical stop reaches the switch:
- The moving object contacts the roller.
- The roller causes the lever to rotate.
- The lever movement operates the internal plunger mechanism.
- The internal electrical contacts change state.
- The NO contact closes or the NC contact opens depending on the control circuit configuration.
- The resulting electrical signal can be used by a PLC, relay, contactor or machine control circuit.
When the mechanical force is removed, the actuator returns to its normal position and the contacts return to their original state.
Omron specifies a built in SPST NO and NC contact form for this switch construction.
This mechanical operating principle makes the switch useful wherever a controller needs confirmation that a physical object has reached a particular position.
C. Why Is the Omron WLCA2-TS-N Used?
The Omron WLCA2-TS-N is primarily used to convert mechanical movement or position into an electrical switching signal.
It can be used for:
- End position detection
- Machine travel limit detection
- Workpiece presence detection
- Conveyor position monitoring
- Pallet detection
- Machine origin detection
- Forward and reverse movement confirmation
- Hydraulic cylinder position detection
- Automatic machine sequencing
- Equipment interlocking
- Mechanical position feedback
Omron specifically lists applications such as detecting passing pallets on production lines, work table origins on machine tools, hydraulic cylinder movement, welding robot arm movement, parking system pallet positions and vertical limits on conveyor systems.
The roller lever construction is especially useful where the target moves across the switch rather than pressing directly against a plunger.
D. Suitable Buyers
The Omron WLCA2-TS-N Roller Lever Limit Switch is suitable for:
- Industrial automation companies
- Machine manufacturers
- OEM machine builders
- Control panel manufacturers
- System integrators
- Conveyor manufacturers
- Packaging machine manufacturers
- Material handling system manufacturers
- Machine tool manufacturers
- Automotive production plants
- Hydraulic machine manufacturers
- Production line manufacturers
- Factory maintenance departments
- Electrical maintenance engineers
- Automation engineers
- Industrial spare parts suppliers
- PLC and control system integrators
It is particularly relevant for buyers requiring a rugged mechanical position switch for repetitive industrial machine movements.
Frequently Asked Questions
1. What is the Omron WLCA2-TS-N?
The Omron WLCA2-TS-N is an industrial roller lever limit switch from the Omron WL-N and WL family. It is designed for detecting the position or movement of machine components and converting that mechanical movement into an electrical switching signal.
2. What type of actuator does the WLCA2-TS-N use?
It uses an R38 mm roller lever actuator. Omron's model number structure identifies CA2 as the R38 mm roller lever configuration.
3. What does TS mean in WLCA2-TS-N?
In Omron's model coding, TS specifies a 1/2-14 NPT conduit connection.
4. Is the Omron WLCA2-TS-N waterproof?
The WL-N and WL series has an IP67 degree of protection, making the switch suitable for many industrial environments where protection against dust and water ingress is required.
5. What are the contacts in the WLCA2-TS-N?
The basic switch construction uses SPST NO and NC contacts, providing normally open and normally closed switching functions.
6. What is the current rating of the Omron WLCA2-TS-N?
For standard load basic switches, Omron specifies resistive load ratings of 10 A at 125 VAC, 250 VAC and 500 VAC. DC ratings include 0.8 A at 125 VDC and 0.4 A at 250 VDC.
7. What is the operating temperature of the WLCA2-TS-N?
The standard operating temperature range for the series is minus 10°C to 80°C, with no icing.
8. Where can the Omron WLCA2-TS-N be used?
It can be used in conveyors, machine tools, packaging machines, production lines, hydraulic machinery, material handling equipment, automated machines and other industrial systems requiring mechanical position detection.
9. Can the WLCA2-TS-N be connected to a PLC?
Yes. Its switching contacts can be incorporated into an appropriately designed PLC input or industrial control circuit, subject to the voltage, current and wiring requirements of the PLC and the switch.
10. Is the WLCA2-TS-N suitable for conveyor applications?
Yes. Omron specifically lists conveyor limit detection and production line pallet detection among the application examples for the WL series.
11. What is the mechanical life of the Omron WLCA2 series?
Omron specifies mechanical durability of at least 15 million operations for the standard series under the stated test conditions.
12. What is the difference between a roller lever limit switch and a plunger limit switch?
A roller lever switch is operated when a moving target contacts and moves the roller lever. A plunger switch is operated through direct linear pressure on the plunger. Omron notes that roller lever models are useful for positioning and workpiece detection, while plunger models provide high repeatability for positioning detection.