maximum I/O supported by freelance, comparing with800xA
I need an estimation for mux size of project that can be suppported by freelance. I know that we should calculate the load regarding to type of I/O and Loop qty and ... but I need an estimation to know for what project sizes(foundation based projects) freelance is not suitable at all.
for example at now we have a FCS(foundation) project which include two independent control systems for two seperate sites.for one site we have 350 hardwired I/O (with 20 loops) and 900 FF signals.
for another site we have 700 hardwired I/O (with 15 loops) and 30 FF signals.
if i can use two freelance systems for these two sites? or i should use 800xA system?
generally when i can estimate that freelance is not enough for a FCS projects and it is big and i should use 800xA system?
Voted best answer
The maximum provided amount of I/Os depends on application. A PM 803F can process in typical applications up to 1500 I/Os. A Freelance system can consist of several Controllers - in theory up to 99. These are more then 100.000 I/Os in a Freelance system!
In practise the most Freelance systems don't cover more 10.000 I/Os. If you take some further conditions into account, Freelance systems can have more than double size.
With in sum 1980 I/Os Freelance suits like System 800xA to this application.
I would recommend to check the requierements for the FF implementation and compare these with System 800xA and Freelance.
Regarding FF signals,
Considering total 930 FF signals and if all signals exchanging data with controller (i.e mapped with IEC 61131 components) you can exchange 600 signals (published/subscribed) per FI 840 module. And per PM802/803 controller 4 FI 840 module can be configured. i.e 2400 signals can be mapped per controller (in case of FF device data exchanged with controller). And freelance system can consist of 99 controllers. So total FF signal count per freelance system can be more than going to be used in your application.
Also Implementing FF solution i.e configuration and commissioning is easier and fast in freelance system.
As replied by burkhard freelance system suits like system 800xA to this application. Recommended to check your requirement with system 800xA and compare between both the systems.
Find related link for system 800xA @ http://www402.abbext.com/800xA-software-designing-q5639.aspx