GE Panel C GFK-2251 - Manual (Page 38)

4-8 Panel C Industrial Computer Hardware User's Manual – May 2003 GFK-2251
4
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Strip wire
to expose
shield.
User-provided clamp
Figure 4-4. Cable Cover Shielding
Ethernet Communication Port
The Panel C provides an RJ-45 (10BaseT/100BaseT) Ethernet connector on the left side of the unit.
The RJ-45 twisted pair connector is an 8-pin MAU MDI connector.
1 2 3 4 5 6 7 8
Pin No. Signal Description
1 TD+ Transmit Data +
2 TD- Transmit Data –
3 RD+ Receive Data +
4 NC no connection
5 NC no connection
6 RD- Receive Data –
7 NC no connection
8 NC no connection
Grounding
Ethernet cable must be shielded and grounded in order to maintain CE Mark compliance,
provide higher EMC immunity, and satisfy the requirements of IEC/EN61000-4-4,
IEC/EN61000-4-5, and ANSI C37.90a. The shield conductor should remain continuous to
the unit, and insulation should be removed only at the grounding point. The grounding
should be such that a 360-degree contact is made to the cable shield. Figure 4-4 shows
an example with the insulating cover of the cable stripped back.
Alternate Grounding Method
An alternative to the user-provided clamp as described in the previous sections, is the
cable shield clamping assembly (IC697ACC736) available from GE Fanuc. This cable
shield clamping assembly provides a high frequency ground for shielded cables via a
ground plate and six cable clamps. Figure 4-5 shows the dimensions required for
mounting. The figure also shows a cable clamp.