KROHNE IFC 100 Converter EN - Manual (Page 44)

4
ELECTRICAL CONNECTIONS
44
IFC 100
www.krohne.com 07/2010 - 4000041004 - MA IFC 100 R04 en
4.11.4 HART ® connection
HART ® connection active (point-to-point)
The parallel resistance to the HART ® communicator must be R ≥ 230 Ω.
HART ® connection passive (Multi-Drop operation)
• I: I
0%
≥ 4 mA
• Multi-Drop mode I: I
fix
≥ 4 mA = I
0%
• U
ext
≤ 32 VDC
• R ≥ 230 Ω
INFORMATION!
•
The current output at connection terminals A+/A-/A always has HART ® capability.
Figure 4-20: HART ® connection active (I
a
)
1 HART ® communicator
Figure 4-21: HART ® connection passive (I
p
)
1 HART ® communicator
2 Other HART ® - capable devices
.book Page 44 Friday, July 9, 2010 12:29 PM