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27 cable shielding, segregation and noise immunity, Proper, Wrong – Yaskawa MP3300iec User Manual

Page 78

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78

YASKAWA America, Inc. MP3300iec Hardware Manual YAI-SIA-IEC-7

27 Cable Shielding, Segregation and Noise Immunity

27

Cable Shielding, Segregation and Noise Immunity

Connector

Case

Terminal Block

Shields tied

back at device

PROPER

Shield tied back at

terminal block.

b)

SMC 3010

Connector Case

Terminal Block

PROPER

Shield connected across

terminal block.

Shields tied

back at device

a)

PROPER

Shields of field

cables grounded at

one point

Proper


Connector

Case

Terminal Block

Shields tied

back at device

b)

Connector Case

Terminal Block

WRONG

Shield grounded at

more than one point.

Shields tied

back at device

a)

WRONG

Shields of field

cables ungrounded

Wrong