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Power Wiring 4-1
CHAPTER 4
Power Wiring
4.1 Grounding the Drive
The drive Safety Ground - must be connected to system ground. Ground impedance must
conform to the requirements of national and local industrial safety regulations and/or electrical
codes. The integrity of all ground connections should be periodically checked.
Ground Fault Monitoring
If a system ground fault monitor is to be used, only Type B devices should be used to
avoid nuisance tripping.
Safety Ground -
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.
Motor Ground
The motor ground must be connected to one of the ground terminals on the drive.
!
ATTENTION:The following information is merely a guide for proper
installation. Baldor Electric Company cannot assume responsibility for
the compliance or the noncompliance to any code, national, local or
otherwise for the proper installation of this drive or associated equipment.
A hazard of personal injury and/or equipment damage exists if codes are
ignored during installation.
ATTENTION:Use the dedicated ground terminal to ground the drive. Do
not use the screw in the case or chassis, etc for grounding.
Figure 4.1 – Typical Grounding
SHLD
U
V
W
R
S
T