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The Allen-Bradley 1756-L63S is a high-performance GuardLogix safety controller designed for demanding industrial automation applications. As part of the ControlLogix platform, this processor provides integrated safety and standard control, allowing users to manage safety-rated I/O and standard I/O within a single controller environment. It is engineered to meet rigorous safety standards while maintaining the robust processing capabilities required for complex machine control.
| Product Model | 1756-L63S |
| Controller Type | GuardLogix Safety Processor |
| User Memory | 8 MB |
| Safety Memory | 4 MB |
| I/O Memory | 478 KB |
| Max Digital I/O | 128,000 |
| Max Analog I/O | 4,000 |
| Current Draw (5.1V DC) | 1200 mA |
| Current Draw (24V DC) | 14 mA |
What is the primary difference between the 1756-L63S and a standard ControlLogix controller?
The 1756-L63S is a GuardLogix controller, which includes specialized safety memory and firmware to support safety-rated I/O and safety-related logic, whereas a standard ControlLogix controller is limited to non-safety applications.
Can this module be used in a standard ControlLogix chassis?
Yes, the 1756-L63S is designed to fit into a standard 1756 ControlLogix chassis alongside other standard I/O and communication modules.

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