Emerson Process Management 2051 Transient Protection Terminal Block, Rosemount, Reference Manual

Reference Manual

00809-0200-4101, Rev AA July 2008

Rosemount 2051

Transient Protection Terminal Block

Perform the following procedure to make wiring connections:

1. Remove the housing cover on terminal compartment side. Do not remove the cover in explosive atmospheres when the circuit is live. Signal wiring supplies all power to the transmitter.

2. Connect the leads to the two FOUNDATION fieldbus wiring terminals. Refer to Figure 2-14.

3.Plug and seal unused conduit connection on the transmitter housing to avoid moisture accumulation in the terminal side. Install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the transmitter housing.

Power Supply

External power supply required; transmitters operate on 9.0 to 32.0 V dc transmitter terminal voltage.

The transmitter will withstand electrical transients of the energy level usually encountered in static discharges or induced switching transients. However, high-energy transients, such as those induced in wiring from nearby lightning strikes, can damage the transmitter.

The transient protection terminal block can be ordered as an installed option (Option Code T1 in the transmitter model number) or as a spare part to retrofit existing 2051 transmitters in the field. See “Spare Parts” on page A-38 for spare part numbers. The lightning bolt symbol shown in Figure 2-14 and Figure identifies the transient protection terminal block.

Figure 2-14. Wiring with transient protection

Trim shield and insulate

DP

Insulate

Shield Connect Shield Back

to the Power Supply Ground

See “Safety Messages” on page 2-1 for complete warning information.

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