Copley Controls Accelnet Plus AEV-090-14 User Manual page 41

Accelnet Plus Micro Modules User Guide
M C
OTOR ONNECTION
On AEV/APV modules the connection to Frame Ground is made by a standoff that connects
the drive heatplate on one end to a copper trace on the mounting PC board with a path to
earth on the other end. The motor cable shield should connect to this trace. Connection of
cable shield to this point is made to provide electrical noise reduction and to prevent the
motor housing from becoming hazardous live in the event of an insulation failure.
Protective earth connections for the motor housing is subject to local electrical codes and
must be reviewed for compliance with those codes. It is the responsibility of the end user
to ensure compliance with local electrical codes and any other applicable standards. It is
strongly recommended that motor also be connected to protective earth connection points
located as close to the motor as possible. In many applications, the machine frame is used
as a primary or supplemental protective earth connection point for the motor housings.
M C
OTOR ABLE
Shields on motor cables reduce emissions from the drive and help protect internal circuits
from interference due to external sources of electrical noise. The shields shown in the
wiring diagrams are also required for CE compliance. Motor cable shields should be tied to
Frame Ground at the drive end, and to the motor frame on the motor end. Motors are
typically grounded to equipment frames, too.
F C
EEDBACK ABLE
Shields on feedback cables reduce emissions from the drive and help protect internal
circuits from interference due to external sources of electrical noise..
Copley Controls
G
ROUNDING
P clip
S
HIELDING
S
HIELDING
Enc A
Enc
Enc
.G
V
U
V
0V
Standoff
eats ink
P rotec tive
E arth ground
16-01687 Rev 03
Encoder
Motor
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