1 cable grounding, Cable grounding – Rice Lake 480 Legend Series Digital Weight Indicator Installation Manual User Manual

Page 15

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Installation 11

2.3.1

Cable Grounding

Except for the power cord, all cables routed through the cord grips should be grounded against the indicator
enclosure. Do the following to ground shielded cables:

• Use the ground clamp screws to install grounding clamps on the grounding bar. Do not tighten screws yet.

• Route cables through cord grips and grounding clamps to determine cable lengths required to reach cable

connectors. Mark cables to remove insulation and shield as described below:

• For cables with foil shielding, strip insulation and foil from the cable 1/2

(15 mm) past the grounding

clamp (see Figure 2-2). Fold the foil shield back on the cable where the cable passes through the clamp.
Ensure silver (conductive) side of foil is turned outward for contact with the grounding clamp.

• For cables with braided shielding, strip cable insulation and braided shield from a point just past the

grounding clamp. Strip another 1/2

(15 mm) of insulation to only expose the braid where the cable

passes through the clamp (see Figure 2-2).

• For load cell cables, cut the shield wire just past the grounding clamp. Shield wire function is provided

by contact between the cable shield and the grounding clamp.

• Route stripped cables through cord grips and grounding clamps. Ensure shields contact grounding

clamps as shown in Figure 2-2. Tighten ground clamp screws.

Figure 2-2. Grounding Clamp Attachment for Foil-Shielded and Braided Cabling

Grounding
clamp

Braid

Braided Cable

Cut insulation here

Foil Insulated Wire

Silver

side out

Shield wire (cut)

Cut insulation here
for foil sheilded cables

Length of foil before
folding back on
cable insulation

Grounding
bracket

Grounding
clamp

480 Indicator
Back Panel

Ground
clamp screw

Ground
clamp screw

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