ABB SE21 series - Interconnection Options HART

D184B122U02 S4 43
8.4.3 Interconnection Options HART
a) „Point-to-Point“ Using a FSK-Modem (Notebook/Desktop)
b) „Multidrop“ Using a FSK-Modem (Notebook/Desktop)
Fig. 16: Connections „Point to Point“
Fig. 17: Connections „Multidrop Mode“
SMART
VISION
RS232
Field Instrument
Address “0”
Power Supply
4..20 mA + FSK
R =250 Ohm
Lmin
SMART VISION
HART-FSK-Modem
Galvanic isolation, Ex-Protection
[EEx ib] incl. connection cable
4/2 mm and 4/4 mm
or
HART-FSK-Modem
Clip on version,
Galvanic isolation with
alligator clips
Information!
For operation as a network component a 250 Ω
resistor is to be connected in series.
SMART
VISION
RS232
Field Instrument
Address “1”
Power Supply
4 mA + FSK
Field Instrument
Address “2”
max. 15 Instruments
FSK
SMART VISION
HART-FSK-Modem
Galvanic isolation, Ex-Protection
[EEx ib] incl. connection cable
4/2 mm and 4/4 mm
or
HART-FSK-Modem
Clip on version,
Galvanic isolation with
alligator clips
Information!
To operate in the Multidrop-Mode, all field instrument
addresses must not be set to 0. The current is thereby
fixed at 4 mA.