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OVERVIEW
Official designation: Allen-Bradley 1756-L55M13 (ControlLogix 5550, Programmable Automation Controller)
Role/Application: This Logix5000 controller executes complex control engines, managing up to 1.5 megabytes of user memory for large-scale industrial automation and communication tasks.
KEY SPECS SUMMARY
Power: 1.25A at 5V DC
Interfaces / Ports: RS-232 9-pin D-shell
Indicators: RUN, ERR, I/O, BAT
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: 1756 Chassis system
Limit: 128,000 I/O points
Lifecycle: End of Life
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the total available user memory for the 1756-L55M13 controller?
A: This processor provides 1.5 MB of RAM for data and logic storage.
Wiring & Installation:
Q: What battery is recommended for data retention during power loss?
A: Use the 1756-BA1 or 1756-BATM battery assembly for memory backup.
Troubleshooting & Compatibility:
Q: What does a solid red OK LED indicate on the front panel?
A: A solid red LED signifies a non-recoverable controller fault.
Replacement & Upgrades:
Q: Which current series is the recommended replacement for the 5550 series?
A: The ControlLogix 5570 or 5580 controllers serve as modern replacements.
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| After-sales Service Contact or Customer Support Number | See this page for details |
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