Operating Instructions

Table Of Contents
Coal
Solids and liquids bulk storage vessels
3.4 System configuration
Typical PLC/mA configuration with HART
5 ˖

SITRANS LR260
Power supply
1)
Active PLC
HART modem
HART communicator
1)
Depending on the system design, the power supply may be separate from the PLC, or integral
to it.
2)
Loop resistance (total of cable resistance plus 250 Ohm [resistor]) must be less than 550 Ohm
for the device to function properly.
3.5 HART communication
This device supports HART
communication protocol. For more information, see HART
Communication (https://fieldcommgroup.org/).
Description
3.5 HART communication
SITRANS LR260 with mA/HART
22 Operating Instructions, 11/2019, A5E32337683-AD