Emerson Rosemount 5400 Series - Intrinsically Safe Power Supply

52
Reference Manual
00809-0100-4026, Rev HA
Section 4: Electrical Installation
November 2014
Electrical Installation
4.8.4 Intrinsically safe power supply
With an intrinsically safe power supply, wire the transmitter as shown in Figure 4-8.
Note
Make sure the instruments in the loop are installed according to intrinsically safe field wiring
practices.
Installation also needs to comply with the applicable installation/control drawing. See “Approval
drawings” on page 230.
Figure 4-8. Wiring Diagram for Intrinsically Safe Power Supply (HART)
The Field Communicator and the HART modem require a minimum load resistance within the
loop of 250 : to function properly. For maximum load resistance see Figure 4-5.
For Safety Instrumented Systems information, see Section 8: Safety Instrumented Systems
(4-20 mA Only).
For IS parameters, see Appendix B: Product Certifications.
Rosemount 5400 Series
radar level transmitter
Approved IS barrier
R
L
=250 W
Power
supply
Field communicator
HART
modem
PC