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OVERVIEW
Official designation: Allen-Bradley 1757-SRM (ControlLogix, Redundancy Module)
Role/Application: This module synchronizes data between redundant ControlLogix chassis via fiber optics, providing seamless bumpless controller failover for critical industrial automation.
KEY SPECS SUMMARY
Power: 1.1A at 5.1V DC
Interfaces / Ports: SC Fiber Optic Port
Indicators: Four Character Display
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: 1756 Chassis
Limit: Two slot width
Lifecycle: End of Life
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What specific fiber optic cable size is compatible with the 1757-SRM?
A: It requires 62.5/125 micron multimode fiber optic cabling.
Wiring & Installation:
Q: Does this redundancy module occupy a single slot in the 1756 chassis?
A: No, the 1757-SRM is a two-slot wide module.
Troubleshooting & Compatibility:
Q: How can a user identify the current status of the redundancy link?
A: Status is monitored via the onboard four-character alphanumeric display.
Replacement & Upgrades:
Q: What is the recommended modern replacement for the legacy 1757-SRM?
A: The 1756-RM2 is the current high-speed redundancy module upgrade.
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| Model Name | See this page for details |
| Certification or Licensing Information Required by Law | See this page for details |
| Country of Manufacture or Origin | See this page for details |
| Manufacturer | See this page for details |
| After-sales Service Contact or Customer Support Number | See this page for details |
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