KROHNE OPTISONIC 3400 EN - Manual (Page 54)

4
ELECTRICAL CONNECTIONS
54
OPTISONIC 3400
www.krohne.com 11/2013 - 4002037702 - HB OPTISONIC 3400 -en-R02
HART ® connection passive (Multi-Drop mode)
• I: I
0%
≥ 4 mA
• Multi-Drop mode I: I
fix
≥ 4 mA = I
0%
• U
ext
≤ 32 VDC
• R ≥ 230 Ω
Figure 4-29: HART ® connection passive (I
p
)
1 Basic I/O: terminals A- and A
2 Modular I/O: terminals C- and C
3 HART
® communicator
4 Other devices with HART ® capability