E-2
ADAM-5511
Grounding Reference
Field Grounding and Shielding Application
Overview
Unfortunately, it’s impossible to finish a system integration task at one
time. We always meet some trouble in the field. A communication
network 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 application note brings you some concepts about field grounding
and shielding. These topics will be illustrated in the following pages.
1. 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
3. Noise Reduction Techniques
4. Check Point List
Summary of Contents for ADAM-5511
Page 1: ...1 Introduction ...
Page 2: ......
Page 19: ...0 Quick Start Chapter ...
Page 35: ...1 Introduction Chapter ...
Page 39: ...2 System Specifications Chapter ...
Page 45: ...3 Installation Guidelines Chapter ...
Page 57: ...4 I O Modules Chapter ...
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Page 111: ...5 Programming and Downloading Chapter ...
Page 143: ...6 Function Library Chapter ...
Page 153: ...ADAM 5511 6 11 Chapter 6 ADAMdelay 1000 WDT_clear WDT_disable Remarks None ...
Page 161: ...ADAM 5511 6 19 Chapter 6 SetRTCtime RTC_hour hour Remarks None ...
Page 163: ...ADAM 5511 6 21 Chapter 6 printf nNode number Error Remarks None ...
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Page 242: ...6 100 ADAM 5511 Function Library Remarks None ...
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Page 264: ...6 122 ADAM 5511 Function Library This page is blank ...
Page 297: ...A COM Port Register Structure Appendix ...
Page 301: ...B Data Formats and I O Ranges Appendix ...
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Page 313: ...C Examples on CD Appendix ...
Page 315: ...D RS 485 Network Appendix ...
Page 323: ...E Grounding Reference Appendix ...
Page 330: ...E 8 ADAM 5511 Grounding Reference Figure E 6 wire impedance ...