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Rosemount 1151
S
3
TEP
CONTINUED
Power Supply
The dc power supply should provide power with less than two percent ripple. The total
resistance load is the sum of the resistance of the signal leads and the load resistance of the
controller, indicator, and related pieces. Note that the resistance of intrinsic safety barriers, if
used, must be included.
Figure 2. Load Limitation
Code
V
V
min
max
(1)
S
12
45
(1) A minimum of 250
8
...
R
max
R
L
R
min
V
V
min
S
R
R
min
max
0
1650
is required for communication.
Operating
Region
V
max
R
at Supply Voltage (V
L
R
= 43.5 (V
– 12)
L
S
Quick Installation Guide
00825-0100-4593, Rev BA
)
S
July 2009
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