1756-L55M14

ControlLogix 5555 Controller with 3.5 MB Memory

ControlLogix 5555 Controller with 3.5 MB Memory for legacy controllogix control applications requiring 3.5 mb of user memory, supplied against the exact catalog number with series, firmware and installed-system compatibility checked before quotation.

BRANDAllen-Bradley

STOCK CONFIRMATIONLead time: 2–3 days

CONDITIONBrand new and original

WARRANTY12 months

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Product overview

The Allen-Bradley 1756-L55M14 is a ControlLogix 5555 Controller with 3.5 MB Memory used for legacy controllogix control applications requiring 3.5 mb of user memory. Typical applications include legacy machine and process control and installed logix 5555 maintenance.

Selection must follow the complete catalog number rather than appearance alone. Before ordering, confirm controller series and firmware, 3.5 mb m14 memory designation, battery and nonvolatile-memory arrangement, rslogix 5000 project and communication modules.

COMMON APPLICATIONS

Installed-system context

Legacy machine and process control
Installed Logix 5555 maintenance
ControlLogix project recovery and exact replacement

Tell us the controller, communication network and installed panel details. That context helps prevent a visually similar but incompatible replacement.

VERIFIED MODEL DATA

Technical specifications

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Manufacturer: Allen-Bradley (Rockwell Automation)
Catalog number: 1756-L55M14
Product name: ControlLogix 5555 Controller with 3.5 MB Memory
Controller family: ControlLogix 5555
User memory: 3.5 MB
I/O memory: 208 KB
Power dissipation: Approx. 5.7 W
Operating temperature: 0–60 °C
Chassis: 1756 ControlLogix chassis
Programming: RSLogix 5000 version and controller firmware must be matched

Technical values are compiled from official Allen-Bradley product documentation for this exact article number. Always check the delivered unit nameplate and revision before installation.

What to send for verification

• Complete catalog number and nameplate
• controller series and firmware
• 3.5 MB M14 memory designation
• battery and nonvolatile-memory arrangement
• RSLogix 5000 project and communication modules
• Required quantity, destination and condition

What your quotation will state

• Exact quoted article number
• New, surplus or refurbished condition
• Available quantity and estimated lead time
• Warranty and proposed shipping method

Legacy Logix 5555 controller — confirm firmware, battery, memory and project compatibility.

BUYER QUESTIONS

Frequently asked questions

What is the Allen-Bradley 1756-L55M14?

It is a ControlLogix 5555 Controller with 3.5 MB Memory used for legacy controllogix control applications requiring 3.5 mb of user memory.

What should be checked before ordering?

Confirm the full catalog number, then verify controller series and firmware, 3.5 mb m14 memory designation, battery and nonvolatile-memory arrangement.

Can a visually similar Allen-Bradley module be used instead?

Do not select by appearance alone. Series, firmware, memory, voltage, communication interface, chassis compatibility and field wiring can differ even when housings look similar.

What information is needed for a quotation?

Send the complete catalog number, quantity, destination, required condition and clear front or nameplate photos. We will confirm the quoted revision and lead time in writing.

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