Connecting Hart; Wiring Setups For Hazardous Area Installations - Siemens Sitrans LR260 Quick Start Manual

Connecting HART

Typical PLC/mA configuration with HART
Notes:
• Depending on the system
design, the power supply may
be separate from the PLC, or
integral to it.
• Loop resistance (total of cable
resistance plus 250 Ohm
[resistor]) must be less than
550 Ohm for the device to
function properly.

Wiring setups for hazardous area installations

The nameplates shown are typical examples. In all cases, check the nameplate on your device,
and confirm the approval rating
7ML19985XH81
power
supply
SITRANS LR260 (HART) – QUICK START MANUAL
active PLC
R= 250 Ω
HART
communicator
SITRANS LR260
HART modem
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