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1775-MEA

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Allen-Bradley 1775-MEA supplies 65,536 words of PLC-3 processor memory for the ladder program, data tables, messages, procedures, and related controller data.
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Technical specifications for 1775-MEA

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1775-MEA
  • Product Family:
    PLC-3
  • Product Type:
    64K PLC-3 Memory Module
  • Stock:
    1
  • Memory Capacity:
    64K or 65,536 words
  • Installation Location:
    PLC-3 processor chassis
  • Memory Use:
    PLC-3 program and data storage
  • Dimensions:
    4.6 × 30.3 × 39.5 cm
  • Compatible Processor Chassis:
    1775-A1, 1775-A2, and 1775-A3
  • Memory Word Length:
    16 bits
  • System Status Area:
    Fixed 22 words
  • Weight:
    2.3 kg
  • Tariff Code:
    8538900000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Capacity Planning Application Backup Return to Service Application
  • Check capacity against the complete PLC-3 program, data tables, procedures, symbols, and messages
  • Preserve a verified memory map and full controller backup before replacing the module
  • Restore and validate the original application without changing its programmed memory requirement

1775-MEA supplies the documented 65,536-word memory option for a PLC-3 processor chassis.

Available capacity must cover the complete program together with data tables, procedures, symbols, and message storage used by the machine.

A verified memory map and full controller backup are required to confirm that the original application can be restored without a capacity change.

Availability, condition, price, and shipping time for 1775-MEA are confirmed during quotation.

Allen-Bradley 1775-MEA 64K PLC-3 Memory Module Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • The official PLC-3 reference assigns 64K or 65,536 words to 1775-MEA.
  • The retained application must fit this capacity together with its data and message areas.
  • Any planned capacity change requires a separate controller-engineering review.
  • The backup should include programs, data tables, procedures, symbols, and messages.
  • The current memory map should be recorded before the installed module is removed.
  • A backup is not accepted until it can be read and associated with the correct machine.
  • Install only after confirming the exact MEA catalog and processor-chassis location.
  • Restore the verified application and check memory and processor diagnostics.
  • Validate controller functions and retained data before releasing the machine.
  • PLC-3 applications whose verified program, data tables, messages, and procedures fit within the 65,536-word capacity of 1775-MEA
  • Maintenance replacements that must preserve the original 64K memory image, processor-chassis identity, and system-status records
  • Legacy machine or process control systems requiring the documented 1775-MEA capacity rather than an unverified memory-size change
Description
Allen-Bradley 1775-MEA is a PLC-3 processor-chassis memory module providing 64K or 65,536 words of program and data storage.

The official PLC-3 reference assigns 65,536 words to this catalog, making it the 64K choice when the retained application fits that documented capacity.

A like-for-like MEA replacement should retain the current memory map and complete application rather than treating a higher-capacity PLC-3 memory catalog as automatically interchangeable.
Alternative Names
1775-MEA Allen-Bradley 1775-MEA Allen Bradley 1775-MEA PLC-3 1775-MEA 1775-MEA PLC-3 Memory Module PLC-3 Memory Module 1775-MEA
Technical notes
1775-MEA replacement requires the exact PLC-3 memory catalog, 64K or 65,536 words capacity, compatible processor chassis, and a verified complete application backup; physical fit alone does not establish memory compatibility.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How can a buyer confirm that Allen-Bradley 1775-MEA has enough capacity for the installed PLC-3 application?
Compare the verified application size, data tables, procedures, symbols, and message storage with the documented 65,536-word capacity.
Should Allen-Bradley 1775-MEA be replaced with a larger PLC-3 memory catalog without review?
No. A capacity change can affect restoration and qualification procedures, so preserve the original catalog unless the controller design is formally reviewed.
What backup is required before removing Allen-Bradley 1775-MEA?
Create and verify a complete PLC-3 backup that includes programs, data tables, procedures, symbols, messages, and the current memory organization.
Why might a restored application exceed Allen-Bradley 1775-MEA capacity?
The backup may include added procedures, expanded data tables, or messages created after the original memory plan was documented.
What identification should be checked on Allen-Bradley 1775-MEA before installation?
Confirm the full MEA catalog, processor-chassis location, connector condition, and the retained application's documented memory requirement.
How should Allen-Bradley 1775-MEA be accepted after replacement?
Restore the verified application, check memory diagnostics, compare the memory map, and prove controller operation under controlled machine conditions.
What should be compared after restoring a PLC-3 backup to Allen-Bradley 1775-MEA?
Compare the restored memory map, data-table limits, procedures, symbols, messages, and processor diagnostics with the verified pre-replacement records before returning the controller to service.