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Rockwell Automation Publication 520-UM001K-EN-E - August 2021
21
Chapter 1 Installation/Wiring
Safety Ground - (PE)
This is the safety ground for the drive that is required by code. One of these
points must be connected to adjacent building steel (girder, joist), a floor
ground rod or bus bar. Grounding points must comply with national and local
industrial safety regulations and/or electrical codes.
Network Ground
Connect terminal C1 to a clean earth ground when using a network with a star
topology (EtherNet/IP™) or daisy-chain (RS485). It is acceptable to ground both
C1 and C2 terminals.
Note: Grounding C1 and C2 helps noise immunity for non-network
applications.
Connect terminal CS1 or CS2 to a clean ground when using a network with a
ring topology (EtherNet/IP).
For more information on EtherNet/IP networks, see
EtherNet/IP Networks on page 248
.
For more information on RS485 networks, see
Motor Ground
The motor ground must be connected to one of the ground terminals on the
drive.
Shield Termination - SHLD
Either of the safety ground terminals located on the power terminal block
provides a grounding point for the motor cable shield. The
motor cable
shield
connected to one of these terminals (drive end) should also be connected to the
motor frame (motor end). Use a shield terminating or EMI clamp to connect
the shield to the safety ground terminal. The earthing plate or conduit box
option may be used with a cable clamp for a grounding point for the cable
shield.
When shielded cable is used for
control and signal wiring
, the shield should be
grounded at the source end only, not at the drive end.
Summary of Contents for Allen-Bradley PowerFlex 520 Series
Page 8: ...8 Rockwell Automation Publication 520 UM001K EN E August 2021 Table of Contents Notes ...
Page 68: ...68 Rockwell Automation Publication 520 UM001K EN E August 2021 Chapter 2 Start Up Notes ...
Page 236: ...236 Rockwell Automation Publication 520 UM001K EN E August 2021 Appendix F PID Set Up Notes ...
Page 270: ...270 Rockwell Automation Publication 520 UM001K EN E August 2021 Index Notes ...