Eaton Limit Switch - LS-11S/L - Eaton Moeller
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Tameson UKEaton Industries Yellow Ls Limit Switch - 266116
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Limit Switch 1Z 1R Snap-Action Roller Lever LS 266116£13.20 delivery£105.84Visit shop →
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Product Information
Full details
The Eaton Moeller LS-11S/L is a robust position limit switch designed for industrial applications requiring reliable actuation and safety signaling. It offers a combination of normally open (NO) and normally closed (NC) contacts with a roller lever actuator, suitable for environments demanding durability and precise control. A key benefit is its snap-action contact with forced opening, enhancing safety. However, it's not designed for hazardous environments involving gas or dust explosions.
All features
| Series | Eaton Moeller |
|---|---|
| Model Part Number | 266116 LS-11S/L |
| Brand | Eaton |
Extended Product Information
FAQs
What is the main purpose of the forced opening feature?
The forced opening feature (positive break) ensures that the normally closed (NC) contact will physically open when the actuator is operated, even if the contacts are welded. This is a critical safety function, particularly in emergency stop or guarding circuits.
What does IP67 and NEMA 4X protection mean?
IP67 means the switch is protected against dust ingress and can withstand immersion in water up to 1 meter for 30 minutes. NEMA 4X offers similar protection and additionally protects against corrosion, making it suitable for washdown environments.
Can this switch be used in explosive atmospheres?
No, the Eaton Moeller LS-11S/L is not designed for use in environments with explosive gas or dust. Special intrinsically safe or explosion-proof equipment is required for such applications.
What are the typical applications for this limit switch?
This switch is suitable for a wide range of industrial automation tasks, including machine guarding, position detection on automated machinery, end-of-travel indication for doors or slides, and general control signaling where a robust and reliable switch is needed.
How do I wire the normally open (NO) and normally closed (NC) contacts?
Refer to the terminal markings on the switch or its documentation. Typically, the NC contact will change state when the actuator is pressed, and the NO contact will change state when the actuator is released. Wire accordingly based on your circuit requirements.
What is the lifespan of this limit switch?
The lifespan depends heavily on the application, frequency of operation, and environmental conditions. However, Eaton Moeller products are designed for industrial durability and are expected to provide reliable service over many millions of operations under typical conditions.
Troubleshooting
Switch does not actuate or change state.
Verify that the moving part is correctly aligned and making positive contact with the roller lever. Check for any obstructions. Ensure the switch is securely mounted.
Intermittent or unreliable switching.
Check all electrical connections at the Cage Clamp terminals for tightness. Inspect the roller lever and its pivot for wear or damage. Ensure the operating temperature is within the specified range.
NC contact does not open reliably (forced opening failure).
This indicates a critical failure. The switch should be immediately replaced. Do not attempt to repair forced opening mechanisms.
Switch fails after exposure to water or dust.
While rated IP67, prolonged submersion or extreme dust accumulation may compromise seals. Inspect for damage and clean thoroughly. If damage is evident or performance is affected, replace the unit.
Pros and Cons
Pros
- Durable construction suitable for industrial use.
- High level of protection against dust and water (IP67/NEMA 4X).
- Snap-action contacts ensure reliable and quick switching.
- Forced opening mechanism enhances operational safety.
- Versatile with both NO and NC contact configurations.
- Easy electrical connections with Cage Clamp terminals.
Cons
- Not suitable for explosive gas or dust environments.
- Roller lever might require specific mounting orientation for optimal function.
- Limited DC-13 current ratings at higher voltages.
- Requires manual reset or appropriate control logic after actuation.
Setup, Compatibility & Care
Setup:
- Mount the LS-11S/L switch securely in the desired location, ensuring the roller lever can be actuated by the moving part.
- Connect the electrical wiring according to the contact configuration (NO/NC) and voltage requirements, using the Cage Clamp terminals for a secure connection.
- Ensure the actuator arm is aligned to make contact with the moving object at the intended point.
Compatibility:
- This switch is designed for general industrial control circuits. It complies with EN 50047 Form E for longitudinal actuators.
- Compatible with control voltages and currents within its specified ratings (AC-15, DC-13).
- Not suitable for direct integration into systems requiring hazardous location certifications (explosion-proof).
Care:
- Regularly inspect the roller lever and actuator for damage or obstruction.
- Periodically clean the exterior of the switch with a dry or slightly damp cloth. Avoid harsh chemicals or solvents.
- Check electrical connections for tightness to prevent intermittent operation.