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28
Cable Shielding, Segregation and Noise Immunity
YASKAWA America, Inc. MP3200iec Hardware Manual YAI-SIA-IEC-5
Proper
SMC 3010
Connector Case
a)
Connector Case
b)
PROPER
Shield tied back at
terminal block.
Wrong
Connector Case
a)
Shield grounded at
more than one point.
Connector Case
b)
28 Cable Shielding, Segregation and Noise Immunity
Terminal Block
Terminal Block
Terminal Block
WRONG
Terminal Block
Shields tied
back at device
PROPER
Shield connected across
terminal block.
Shields tied
back at device
PROPER
Shields of field
cables grounded at
one point
Shields tied
back at device
Shields tied
back at device
WRONG
Shields of field
cables ungrounded
89
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