PFD values Allen Bradley Controller Redundant system

framo90

Member
F
Join Date
Apr 2015
Location
London
Posts
1
Hi, I am looking in "Using ControlLogix in SIL 2 Applications" and reading up on PFD calculations.

In appendix C there are tables with different PFD values for each component. The problem is that I can't find a PFD value that takes in consideration that the Controller (in this case a 1756-L71) is in a redundant system. Any ideas how to take this into the calculation?
 
Last edited:

Similar Topics

H
Help....Converting acd file to PFD.
I saw a few post where members were submitting there acd files and having them converted to pdf files. Im not sure if this is against any rules...
Replies
13
Views
2,663
daba
D
HJTRBO
Beijer e615 message "PFD No spare"
Hi all, I have a beijer e615 screen that shows the above message as soon as it attempts to boot up. I acknowledge the message with ok, the screen...
Replies
0
Views
1,690
HJTRBO
HJTRBO
B
Symbols- PFD & P&ID
Any familiarity with the symbol, circle with and arrow through the center.... Dealing with process to automate via PLC Looking for ISA symbol...
Replies
8
Views
4,618
rsdoran
rsdoran
M
Maintaining variable values through shutdown (HC900)
I'm upgrading an existing machine with a Honeywell HC900 controller, and I'm trying to do some data processing in the controller. I have variables...
Replies
0
Views
48
mike.s
M
J
Proficy Machine Edition - Input longer initial values
I'm getting frustrated creating arrays of variables in Machine edition. I need to make 2 variable arrays that are 102x2 in size, with varying...
Replies
3
Views
89
Jaycobie
J
Back
Top Bottom