Endress+Hauser PROline promag 53 - 4.3 Connecting the Measuring Unit

PROline Promag 53 4 Wiring
Endress+Hauser 55
4.2. 3 HART connect ion
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 to 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”
– Switching HART write protection on or off (see Page 82)
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”.
Fig. 34: Electrical connection of the HART handheld communicator:
1 = HART communicator, 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 an operating software (e.g. “FieldTool™”), a HART modem
(e.g. “Commubox FXA 191”) is needed.
See also the documentation issued by the HART Communication Foundation, and in
particular HCF LIT 20: “HART, a technical summary”.
Fig. 35: Electrical connection of a PC with an operating software:
1 = PC with an operating software, 2 = power supply, 3 = shield, 4 = other evaluation devices or PLC with
passive input, 5 = HART modem, e.g. Commubox FXA 191
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