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6.1 Grounding Twisted-Pair Cable Transmission Lines
6
Grounding of a twisted-pair cable transmission way is performed as follows.
É
1
Ê
A hub is attached in a case and it connects with grounding of a case. Or a
grounding line 2mm or more is connected to a hub (refer to the following clause).
É
2
Ê
A relay connector unit is connected to the connector of one of the two of an STP
cable within a board.
• When connecting a hub unit and TC-net 100 module, connect the STP cable
connector by the side of TC-net100 module to a relay connector unit, and
change into a UTP cable.
• When the cascade connection of a hub and the hub unit is being carried out,
connect a relay connector unit to one of the STP cables, and change into a UTP
cable.
• When connecting TC-net 100 modules, without using a hub unit, connect a relay
connector unit to one of the STP cables, and change into a UTP cable.
É
3
Ê
A transmission article is insulated so that other metal may not be contacted.
É
4
Ê
A grounding line is connected to a grounding pole.
When having doubled the transmission way, one-point grounding is performed
separately B system A system, respectively. Please connect the grounding line of a
transmission article at the next place.
• When grounding of a case is grounding of exclusive use, such as an integrated
controller, it connects with the grounding terminal or bus bar for grounding in a
case, and a grounding line is grounded. (It recommends preparing class D
grounding only for transmission articles.)
• When grounding of a case is intermingled with groundings, such as other
apparatus, class D grounding only for transmission articles is prepared and
grounded.
hub unit
hub unit hub unit
TC-net 100 module
TC-net 100 moduleTC-net 100 module
Relay connector unit
STP cable
UTP cable
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