Rockwell-automation 1771-IR , D17716.5.76 RTD INPUT MODULE Manual de usuario descargar pdf (Pagina 16)

Installing the RTD Input Module

Chapter 3

35

When using shielded cable, 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 a chassis mounting bolt (Figure 3.3). At the

opposite end of the cable, tape exposed shield and drain wire with electrical tape

to insulate it from electrical contact.

Figure 3.3

Cable

Grounding

17798

Ground Shield at

I/O chassis

mounting bolt

Shield and drain

twisted into

single strand

Field Wiring Arm

Refer to Wiring and Grounding Guidelines, publication 1770-4.1 for additional information.

When installing your module in an I/O chassis:

1. First, turn off power to the I/O chassis:

WARNING: Remove power from the 1771 I/O chassis backplane

and wiring arm before removing or installing an I/O module.

Failure to remove power from the backplane could cause injury or

equipment damage due to possible unexpected operation.

Failure to remove power from the backplane or wiring arm could

cause module damage, degradation of performance, or injury.

Grounding the Input Module

Installing the Input Module

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Rockwell-automation 1771-IR , D17716.5.76 RTD INPUT MODULE Manual de usuario Pagina 16