Emerson 3000 manual Instruction Bulletin, 5.Heater Power Supply Wiring Connections

World Class 3000

Instruction Bulletin

106-300NE Rev. 3.4

May 2000

2

Figure 2-5. Heater Power Supply Wiring Connections

2-2 HEATER POWER SUPPLY INSTALLATION

Install all protective equipment covers and safety ground leads after installa- tion. Failure to install covers and ground leads could result in serious injury or death.

a.Mechanical Installation

The outline drawing of the heater power supply enclosure, Figure 2-3,shows mounting centers and clearances. The NEMA 4X enclosure is designed to be mounted on a wall or bulkhead. The heater power supply should be installed no further than 150 feet (45 m) from the probe. The heater power supply must be located in a location free from significant ambient tem-

perature changes and electrical noise. Ambient temperature must be between -20° to 140°F (-30° to 60°C).

b.Electrical Connections

1.Electrical connections should be made as described in the electrical installa- tion diagram, Figure 2-4.The wiring terminals are divided into two layers; the bottom (FROM PROBE) terminals should be connected first, the top (FROM ELECTRONICS) terminals should be connected (Figure 2-5). Each terminal strip has a protective cover which must be removed when making connections. To remove the terminal covers, remove two slotted screws holding the cover in place. Al- ways reinstall terminal covers after making connections.

Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-9