Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Manuel d'utilisateur télécharger pdf (Page 30)

2–12 Installing the Module

Publication 1771ĆUM127B-EN-P - December 2002

When using shielded cable or shielded thermocouple extension wire,

ground the foil shield and drain wire only at one end of the cable.

We recommend that you wrap the foil shield and drain wire together

and connect them to the “S” connection on the RTP for the particular

channel. All shield connections are internally connected together in

the RTP so that only one wire is required to ground the entire remote

termination panel. Connect a wire from the “SH” connection on the

RTP to a ground stud on the metal cabinet in which the remote

termination panel is mounted.

If you do not want to ground a particular shield at the RTP, you can

remove the jumper for that particular channel. This will allow the

shield to float at the RTP end. To remove a jumper, you must cut it

out. Once the jumper is removed it cannot be replaced. Clip as

close to the circuit board as possible at both ends to completely

remove it. The jumpers (Figure 2.7) are labeled J1 through J8,

corresponding to channels 1 through 8 respectively.

Figure 2.7

Jumper Positions

Jumpers for channels

1 through 4

Jumpers for channels

5 through 8

Refer to publication 1770-4.1, Programmable Controller Wiring and

Grounding Guidelines, for additional information.

Grounding the Field

Devices

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Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Manuel d'utilisateur Page 30