Wiring
Proline Promag 51
36
Hauser
4.2.4
HART connection
The following connection options are available:
• Direct connection to transmitter by means of terminals 26(+) / 27(–)
• Connection by means of the 4 to 20 mA circuit
!
Note!
• The measuring loop's minimum load must be at least 250
.
• CURRENT SPAN function
"4-20 mA".
Connection of the HART handheld communicator
See also the documentation issued by the HART Communication Foundation, and in particular
HCF LIT 20: "HART, a technical summary".
a0004586
Fig. 31:
Electrical connection of the HART handheld terminal Field Xpert SFX100
1
HART handheld terminal Field Xpert SFX100
2
Power supply
3
Shield
4
Other evaluation devices or PLC with passive input
Connection of a PC with an operating software
In order to connect a PC with operating software (e.g. "FieldCare"), a HART modem
(e.g. "Commubox FXA195") is needed.
a0004592
Fig. 32:
Electrical connection of a PC with operating software
1
PC with operating software
2
Auxiliary energy
3
Shielding
4
Other devices or PLC with passive input
5
HART modem, e.g. Commubox FXA195
+26
-27
4
2
250
1
3
+26
250
–27
1
2
3
5
4