Emerson Process Management Rosemount 2410 manual Electrical Installation, Cable Entries

Reference Manual

300530EN, Rev BA September 2012

Rosemount 2410

3.4 ELECTRICAL INSTALLATION

3.4.1Cable Entries

Figure 3-1. Cable entry with NPT threaded gland

The Rosemount 2410 electronics housing has four ½ - 14 NPT and two

¾- 14 NPT entries. The connections must be made in accordance with local or plant electrical codes.

Make sure that unused ports are properly sealed to prevent moisture or other contamination from entering the terminal block compartment of the electronics housing.

NOTE!

Use the enclosed metal plugs to seal unused ports. The plastic plugs mounted at delivery are not sufficient as seal!

NOTE!

It is recommended that a sealant of type PTFE is used to prevent water ingress and to enable future removal of the plug/gland.

NPT is a standard for tapered threads. Engage the gland with 5 to 6 threads. Note that there will be a number of thvbreads left outside the housing as illustrated below.

The NPT threaded gland leaves a number of threads outside the housing

Glands must meet the following requirements for the Non-IS cable entries:

•Ex de explosion protection

•IP class 66 and 67

•material: metal (recommended)

3.4.2Power Supply

3.4.3Cable Selection for Power Supply

The Rosemount 2410 Tank Hub accepts supply voltage 48 - 240 Vac (50/60 Hz) and 24 - 48 Vdc The 2410 provides intrinsically safe power to all devices connected to the Tankbus (see “Tankbus” on page 3-8).

Cables must be suitable for the supply voltage and approved for use in hazardous areas, where applicable. For instance, in the U.S., explosion-proof conduits must be used in the vicinity of the vessel.

Suitable conduits with sealing device or flame proof cable glands must be used depending on local requirements.

Appropriate cross sectional area of wires must be used in order to prevent a too high voltage drop to the connected device. Use 0.75 mm2 to 2.5 mm2 (18 AWG to 13 AWG) in order to minimize the voltage drop.

Section 3. Installation 3-5