Hart Connection - Endress+Hauser Proline Prosonic Flow 90 Operating Instructions Manual

Proline Prosonic Flow 90
!
Endress+Hauser
4.2.3

HART connection

Users have the following connection options at their disposal:
• Direct connection to transmitter by means of terminals 26 / 27
• Connection by means of the 4...20 mA circuit.
Note!
• The measuring loop's minimum load must be at least 250 Ω.
• After commissioning, make the following settings:
– CURRENT SPAN function → "4...20 mA HART" or "4...20 mA (25 mA) HART"
Connecting the HART handheld communicator
For connecting, see also the documentation issued by the HART Communication Foundation, and
in particular HCF LIT 20: "HART, a technical summary".
4 3
Fig. 36: Electrical connection of the HART handheld communicator:
1 = HART communicator, 2 = power supply, 3 = shield, 4 = other evaluation devices or PLC with passive input
Connecting a PC with operating software
A HART modem (e.g. Commubox FXA 191) is required for connection of a personal computer
running operating software (e.g. "ToF Tool - Fieldtool Package").
See also the documentation issued by the HART Communication Foundation, and in particular
HCF LIT 20: "HART, a technical summary"
.
1
RS 232
4 3
Fig. 37: Electrical connection of a PC with operating software
1 = PC with operating software, 2 = power supply, 3 = shield, 4 = other switching units or PLC with passive input,
5 = HART modem, e.g. Commubox FXA 191
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FIELD COMMUNICATOR
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4 Wiring
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