Emerson 3051S Specifikace stáhnout pdf (Strana 9)

Quick Start Guide

May 2015

Figure 6. Transmitter switch and jumper configuration

A. Meter/adjustment module

B. Security

C. Alarm

Step 4: Connect wiring and power up

Use the following steps to wire the transmitter:

1. Remove and discard orange conduit plugs.

2. Remove the housing cover labeled “Field Terminals.”

3. Connect the positive lead to the “+” terminal, and the negative lead to the “–”

terminal.

Note

Do not connect the power across the test terminals. Power could damage the test diode in the test

connection. Twisted pairs yield best results. Use 24 AWG to 14 AWG wire and do not exceed 5,000

feet (1500 meters). For single compartment housing (Junction Box housing), shielded signal wiring

should be used in high EMI/RFI environments.

4. Plug and seal the unused conduit connection with the provided conduit plug.

5. If applicable, install wiring with a drip loop. Arrange the drip loop

so the bottom is lower than the conduit connections and the

transmitter housing.

6. Reinstall the housing cover and tighten so the cover is fully seated with metal

to metal contact between the housing and cover in order to meet explosion

proof requirements.

The figures below show the wiring connections necessary to power a 3051S and

enable communications with a hand-held Field Communicator.

PlantWeb Junction box

NOTICE

When the enclosed threaded plug is utilized in the conduit opening, it must be installed with a

minimum thread engagement in order to comply with explosion-proof requirements. For

straight threads, a minimum of 7 threads must be engaged. For tapered threads, a minimum of

five threads must be engaged.

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Emerson 3051S Specifikace Strana 9