Rice-lake Counterpart Configurable Counting Indicator - Inst Instrukcja Użytkownika Pobierz pdf (Strona 18)

12 Counterpart Counting Scale Indicator

2.8 Cable Grounding

Except for the power cord, all cables should be grounded against the scale enclosure. Do the following to ground

shielded cables.

• Use the lockwashers, clamps, and kep nuts provided in the parts kit to install grounding clamps on the

enclosure studs. Install grounding clamps that will be used; do not tighten nuts.

• Route cables 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 half an inch (15 mm) past the

grounding clamp (see

Figure 2-9). 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 half inch (15 mm) of insulation only to expose the braid where the cable

passes through the clamp (see

Figure 2-9).

• Finish installation using cable mounts and ties to secure cables inside of indicator enclosure.

Figure 2-9. Grounding Clamp Attachment for Foil-Shielded and Braided Cabling

2.8.1 Serial Communications

Wire the serial communications cables to J4, which is Port 2 (5-wire RS-232 port). J5 is Port 1 (RS-232 and 20

mA). Connect communications cables to J5 and J4 as shown in Table 2-3.

Use cable ties to secure serial cables to the inside of the enclosure.

Port 1 supports full duplex RS-232 communications only; Port 2 provides either active 20 mA output or duplex

RS-232 transmission. Both ports are configured using the SERIAL menu. See

Section 3.7.3 on page 42.

Table 2-3. J4 and J5 Pin Assignments

An additional port (Port 3) is available if needed through the installation of an option card at J14.

Connector Pin Signal Port

1 +20 mA

2 Ground or

-20 mA

3 Tx

4 Rx

5 CTS

6 RTS

1 Ground

2 Ground

3 Tx

4 Rx

5 DTR

6 RTS

Cord grip

Insulated cable

Foil (silver side out)

Grounding clamp

Shield wire (cut)

Length of foil before folding

back on cable insulation

Cut insulation here

for foil-shielded cables

Braid

Cut insulation here

for braided cables

NOTE: Install lockwashers

ﬁrst, against enclosure,

under grounding clamp

Note

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 111 112

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