Basic Plc/Ma Configuration With Hart - Siemens SITRANS LR560 Operating Instructions Manual

Connecting

5.3 Basic PLC/mA configuration with HART

Removing the lid and display
5.3 Basic PLC/mA configuration with HART
①
②
③
Depending on the system design, the power supply may be separate from the PLC, or integral to it.
1)
HART resistance (total loop resistance, that is, cable resistance plus 250 Ohm [resistor]) must be
2)
less than 550 Ohm for the device to function properly.
38
power supply
1)
active PLC
R= 250 Ω
2)
Terminal block
①
cable gland (or NPT cable entry
②
cable shield
③
instrument connection
④
HART modem
⑤
HART communicator
Operating Instructions, 06/2017, A5E34647946-AD
SITRANS LR560 (mA/HART)