855E-LL24A Allen‑Bradley

Description

Product Name : 855E-LL24A Allen‑Bradley Central control module

Product details:

The Allen-Bradley 855E-LL24A is a 50 mm Control Tower™ stack light module manufactured by Rockwell Automation. It is a pre-assembled or modular light illumination component designed to provide highly visible, multi-status indication for machinery and industrial processes.

The “LL24A” configuration specifically denotes a steady-on LED light module in Amber (Yellow) operating at 24V AC/DC.

Technical Parameters (Specifications)

Product Advantages

• High Energy Efficiency & Longevity: Utilizing solid-state LED technology significantly reduces power consumption and extends operational life up to 100,000 hours, minimizing maintenance overhead and bulb-replacement downtime.
• Superior Visibility: The vibrant amber LED combined with a polycarbonate diffused lens ensures excellent clarity and visibility even in high-ambient-light factory environments.
• Rugged Construction: Built with high-impact, UV-stabilized polycarbonate material, making it highly resistant to physical impacts, industrial vibrations, and harsh environmental conditions.
• Modular Twist-and-Lock System: No tools are required to stack or change modules. The mechanical and electrical connections are made simultaneously via a simple twist-and-lock mechanism, making installation or scaling effortless.
• Robust Environmental Sealing: Offering IP65 and NEMA 4/4X protection, it safely withstands water jets, dust, oil, and coolant spray typical in heavy industrial manufacturing.

Important Precautions & Considerations

⚠️ Installation Safety: Always disconnect the main power supply before installing, removing, or wiring any modules to prevent electrical shock or damage to the internal circuitry.

• Voltage Tolerance: Ensure the power source strictly adheres to the 24V AC/DC rating. Exceeding this rating can burn out the module, while under-voltage will cause weak illumination.
• Stack Limitations: While Bulletin 855E allows multi-tier stacking, check the power budget of your base/sounder module. Do not exceed the maximum recommended stack height (typically up to 5 modules per base).
• Environmental Sealing Check: Ensure the O-ring seals between the stacked modules are properly aligned and seated during assembly. Misaligned seals compromise the IP65 rating and can lead to moisture ingress.
• Chemical Exposure: Avoid exposing the polycarbonate lens to strong organic solvents, aromatic hydrocarbons, or highly corrosive cleaning agents, as they can cause micro-cracking or clouding of the lens.

Product Applications

The Amber/Yellow steady-on light is traditionally used in industrial automation to signify a Warning, Hazard, or Impending Change in State (e.g., material low, minor fault, system clearing). Common applications include:

• Automotive Assembly Lines: Indicating a minor stoppage, part replenishment alert, or a non-critical maintenance request.
• Packaging and Material Handling: Warning operators that conveyor systems or sorting machines are entering a buffer state or experiencing minor jams.
• CNC Machining Centers: Visual queuing for machine cycle completion, axis overtravel warnings, or coolant fluid low warnings.
• Semiconductor & Cleanroom Equipment: Providing space-efficient status alerts without generating particulate contamination (thanks to the fully enclosed IP65 housing).
• Food & Beverage Processing: Installed on bottling, capping, and processing skids to monitor line flow statuses under washdown conditions.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service

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