Prepare The Electrical Connections; Cable Selection; Power Supply; Power Consumption - Emerson Rosemount 5408 Quick Start Manual

March 2018
6

Prepare the electrical connections

6.1

Cable selection

Use 24-14 AWG wire. Twisted pairs and shielded wiring are recommended for
environments with high EMI (electromagnetic interference).
The cables must be suitable for the supply voltage and approved for use in
hazardous areas, where applicable. Two wires can be safely connected to
each terminal screw.
6.2 Cable gland/conduit
For explosion-proof/flameproof installations, only use cable glands or
conduit entry devices certified explosion-proof or flameproof.
6.3

Power supply

The transmitter operates on 12-42.4 Vdc (12-30 Vdc in Intrinsically Safe
installations) at the transmitter terminals.
6.4

Power consumption

Max. 1 W, current max. 23 mA
6.5 Load limitations
For HART
Maximum loop resistance is determined by the voltage level of the external
power supply.
Quick Start Guide
®
communication, a minimum loop resistance of 250 Ω is required.
Quick Start Guide
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