2711P-K10C4D9 Allen-Bradley .

2711P-K10C4D9    Allen-Bradley      AC Servo driver

A GuardLogix® controller is a ControlLogix controller that also provides safety control. The GuardLogix system is a dual 

controller solution—you must use a 1756-L6S/1756-L7S primary controller and a 1756-LSP/1756-L7SP safety partner 

to achieve up to SIL CL 3/PLe/Cat. 4. A major benefit of this system is that it is still one project, safety and standard 

together. The safety partner controller is a part of the system, is automatically configured, and requires no user setup.

During development, safety and standard have the same rules; multiple programmers, online editing, and forcing are all 

allowed. Once the project is tested and ready for final validation, you set the safety task to a SIL 3 integrity level, which is 

then enforced by the GuardLogix controller. When safety memory is locked and protected, the safety logic cannot be 

modified and all safety functions operate with SIL 3 CL integrity. On the standard side of the GuardLogix controller, all 

functions operate like a regular Logix controller. Thus, online editing, forcing, and other activities are all allowed.

With this level of integration, safety memory can be read by standard logic and external devices, like HMIs or other 

controllers, minimizing the need to condition safety memory for use elsewhere. The result is easy system-wide 

integration and the ability to display safety status on displays or marquees. Use Guard I/O™ modules for field device 

connectivity on Ethernet or DeviceNet networks, and for safety interlocking between GuardLogix controllers use 

Ethernet or ControlNet networks. Multiple GuardLogix controllers can share safety data for zone to zone interlocking, 

or one GuardLogix controller can use remote distributed safety I/O between different cells/areas.

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