Maxiflex P3 PAC User Manual
101
-© Omniflex
UMM126XR18.pdf
IMPORTANT NOTICE REGARDING SAFETY
The Maxiflex P3-
R CPU’s are designed for High Availability applications. Although
every attempt is made to design a system with maximum diagnostic fault coverage,
this system is not designed
for use in “safety related systems” as defined in IEC61508
or equivalent.
Omniflex makes no claim regarding the ability of the system to fail to a safe state, and
cannot be held liable for consequential loss resulting from the failure of any
component or system supplied by Omniflex.
13.3 Redundant System Architecture Overview
The P3-
R Redundant Controller is designed for applications where dual redundant CPU’s are
required connected to common Inputs and Outputs.
The dual redundant network connection to the supervisory system is transparent to the
supervisory system.
This architecture is shown in the following typical system diagram:
Figure 13.1: Dual Redundant Controller System Architecture
This Dual Redundant Architecture has the following features:
•
Two identical Maxiflex “P3-R” CPU’s are configured to create a primary and secondary
controller pair acting as a single redundant Master Controller.
•
Each P3-R CPU is contained on its own master base with power supply and
communications capability, eliminating all common points of failure between the two.
