Rockwell Automation System Design for the Control of Electrical Noise - Manual (Page 19)

Publication GMC-RM001A-EN-P — July 2001
Chapter
2
High Frequency (HF) Bonding
Chapter Objectives This chapter describes the ground plane principle and techniques to
extend the ground plane to devices, panels, machines, floors, doors,
and buildings. This chapter covers the following topics:
• Understanding the source of electrical noise
• Noise solutions using a ground plane
• Grounding (safety earth)
Understanding the Source
of Electrical Noise The most common source of electrical noise is due to switching of
PWM output stages.
Two examples of how noise is generated by a drive system are given
on the following pages.