44 Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
Chapter 5 Connect the 8720MC-RPS Unit
Ground the Drive System
All equipment and components of a machine or process system must have a
common earth-ground point that is connected to chassis. A grounded system
provides a ground path for protection against electrical shock. Grounding your
modules and panels minimize the shock hazard to personnel and damage to
equipment caused by short circuits, transient overvoltages, and accidental
connection of energized conductors to the equipment chassis.
Ground the System Subpanel
Ground 8720MC-RPS units to a bonded cabinet ground bus with a braided
ground strap. Keep the braided ground strap as short as possible for optimum
bonding.
Figure 20 - Connect the Ground Terminal
Refer to the System Design for Control of Electrical Noise Reference Manual,
publication GMC-RM001
, for more information.
ATTENTION: The National Electrical Code contains grounding requirements,
conventions, and definitions. Follow all applicable local codes and
regulations to safely ground your system.
For CE grounding requirements, refer to EMC Compliance
on page 65.
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Braided Ground Straps
12 mm (0.5 in.) by 0.8 mm (0.03 in.).
Keep straps as short as possible.
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8720MC Regenerative Power Supply
(8720MC-RPS190 is shown)
Item Description
1 Ground screw (green) 2.0 N•m (17.7 lb•in), max
2 Braided ground strap (customer supplied)
3 Ground grid or power distribution ground
4 Bonded cabinet ground bus (customer supplied)
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