Electrical
connection
CI/TTH300-EN
TTH300
EN - 15
4.3.1.1 Standard application with HART functionality
Field Control
room
Fig. 10
A Transmitter
B Power supply / SPS input with supply
Adding resistance R250 increases the minimum supply voltage:
U
Mmin
≤
U
Smin
+ 0.02A x (R
Ltg
+ R
250
)
Where
U
Mmin
:
Minimum operating voltage of transmitter (refer to technical data for transmitter)
U
Smin
:
Minimum supply voltage of power supply / SPS input
R
Ltg
:
Line resistance between transmitter and power supply
R
250
:
Resistance for HART functionality
Summary of Contents for TTH300 Series
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