Wiring
The HART® terminals are connected to the internal resistor of the loop power supply.
There is no internal connection to the current input. If the loop power supply of the
device is not used, an external HART® resistor must be used in the 4 to 20 mA current
loop.
1
2
3
4
Internal circuitry of the HART® connection sockets
1
Current input
2
HART® connection sockets
3
Loop power supply
4
A/D converter
5.2
Post-connection check
Device condition and specifications
Are cables or the device damaged?
Electrical connection
Does the supply voltage match the specifications on the nameplate?
38
Interfaces
Interface for configuring with PC software
HART® connection sockets
CH1 /
CH2
x8
x4
x2
200 Ω
x1
4
24 V
Notes
Visual inspection
Notes
24 to 230 V AC/DC (-20 % / +10 %)
50/60 Hz
Endress+Hauser
RMA42
A0012418
A0012403
A0029250