Emerson Rosemount 5408 Quick Start Manual page 24

Quick Start Guide
8.5 Power supply
4-20 mA/HART
The transmitter operates on 12-42.4 Vdc (12-30 Vdc in Intrinsically Safe
installations) at the transmitter terminals.
FISCO/F
The transmitter operates on 9-32 Vdc (9-30 Vdc in Intrinsically Safe
installations and 9-17.5 Vdc for FISCO) at the transmitter terminals.
8.6 Signal termination
A terminator should be installed at the beginning and end of every Fieldbus
segment.
For transmitter with built-in terminator, connect a jumper wire between the
"TERMINATE ON" terminals to activate the terminator. Refer to
selection
8.7 Load limitations
For HART
Maximum loop resistance is determined by the voltage level of the external
power supply.
Figure 8-3: Load Limits
Maximum Loop Resistance = 43.5 * (External Power Supply Voltage - 12)
A. Loop Resistance (Ohms)
B. External Power Supply Voltage (Vdc)
24
®
™
Fieldbus
OUNDATION
for recommended wire size.
®
communication, a minimum loop resistance of 250 Ω is required.
Rosemount 5408 and 5408:SIS Level Transmitters
May 2019
Cable