ControlLogix 5590 Safety Systems

You can enable all

ControlLogix®

5590 controllers for safety. A safety-enabled controller can support up to SIL 3 and PLe safety applications.

Without a safety partner installed, you can achieve SIL 2/PLd (Category 3) with the use of the safety task and safety I/O.
With the use of the safety task and a safety partner that is installed, you can achieve SIL 3/PLe (Category 4) capability.
Logix SIS can achieve up to SIL 3/PLe (Category 3) capability.

A controller that is enabled for safety can communicate with safety I/O devices via

CIP Safety™

over an

EtherNet/IP™

network (safety I/O modules, integrated safety drives, integrated safety components). You can interface to local standard and safety I/O in the backplane while your interface with remote safety I/O through the Ethernet ports.

For standard tasks, a safety-enabled controller supports:

Ladder Diagram (LD)
Structured Text (ST)
Function Block Diagram (FBD)
Sequential Function Chart (SFC)

For the safety task, safety-enabled controllers support Ladder Diagram only.