Advantech ADAM-6050 18-Channel Isolated Digital I/O Modbus TCP Module ADAM-6050-BE Scheda Tecnica

Overview 
Unfortunately, it’s impossible to finish a system integration task at one 
time. We always meet some trouble in the field. A communication net-
work or system isn’t stable, induced noise or equipment is damaged or 
there are storms. However, the most usual issue is just simply improper 
wiring, ie, grounding and shielding. You know the 80/20 rule in our life: 
we spend 20% time for 80% work, but 80% time for the last 20% of the 
work. So is it with system integration: we pay 20% for Wire / Cable and 
0% for Equipment. However, 80% of reliability depends on Grounding 
and Shielding. In other words, we need to invest more in that 20% and 
work on these two issues to make a highly reliable system. This applica-
tion note brings you some concepts about field grounding and shielding. 
These topics will be illustrated in the following pages.

Grounding
1.1          The ‘Earth’ for reference
1.2          The ‘Frame Ground’ and ‘Grounding Bar’
1.3          Normal Mode and Common Mode
1.4          Wire impedance
1.5          Single Point Grounding

2. Shielding
2.1          Cable Shield
2.2          System Shielding