Guardlogix Architecture - Allen-Bradley GuardLogix 5580 Original Instructions Manual

GuardLogix Architecture

To Plant-wide Ethernet Network
Stratix® 5400 Switch
This section provides examples of SIL 3 and SIL 2 systems, including:
• The overall safety function
• The GuardLogix portion of the overall safety function
• How other devices (for example, HMI) are connected, while operating
outside the function
Figure 1 - Example SIL 3 System
-
Programming Software
Safety System
GuardLogix 5580 Controller
Logix5584ES™ Logix55L8SP™ DC INPUT
NET
LINK
RUN FORCE SD OK OK
REM
RUN PROG
Safety I/O Module on
Ethernet Network
5069-AEN2TR
Compact 5000 I/O Modules
Compact 5000 I/O Safety Modules
Rockwell Automation Publication 1756-RM012B-EN-P - April 2018
Safety Integrity Level (SIL) Concept
HMI Display
Safety I/O Module on
Ethernet Network
OUTPUT DC INPUT DC OUTPUT COUNTER
5069-IB8S 5069-OBV8S 5069-IB16 5069-OB16 5069-HSC2xOB4
Compact 5000™ I/O
Chapter 1
Actuator
Sensor
Actuator
Sensor
11