ABB TTR200 - Page 17

Electrical connection
OI/TTR200-EN TTR200 17
Standard application with HART functionality
Field Control room
Fig. 6
A Transmitter B Power supply / SPS input with supply
Adding resistance R
250
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 repeater power supply / SPS input
R
Ltg
: Line resistance between transmitter and power supply
R
250
: Resistance for HART functionality
Pos: 14.15 /==== === Seitenumbruch ======= = @ 0\mod_1126532365768_3101.d oc @ 3830