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Quick Start Guide
Figure 2-1: Power supply voltage for HART
communication configurations
A. With HART communication
B. Without HART communication
Table 2-1: Values from Graph
Upper line
Lower line
Maximum current
Minimum load for digital
communications
Minimum power supply voltage to
supply the 12.0 Vdc lift off voltage at the
transmitter
10
®
or without HART
Power supply voltage needed to provide
12 Vdc at the transmitter terminals for a
22 mA current
Power supply voltage needed to provide
30 Vdc for a 22 mA current
About 24 mA
250 Ohms
17.5 Vdc
Emerson.com/Rosemount
April 2019
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