KROHNE OPTISONIC 7300 EN - Manual (Page 54)

4
ELECTRICAL CONNECTIONS
54
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
4.7.6 HART ® connection
HART ® connection active (point-to-point)
The parallel resistance to the HART ® communicator must be R ≥ 230 Ω.
INFORMATION!
• In the basic I/O the current output at connection terminals A+/A-/A always has HART ®
capability.
• For modular I/O and Ex i E/A, only the output module for the connection terminals C/C- has
HART
® capability.
Figure 4-31: HART ® connection active (I
a
)
1 Basic I/O: terminals A and A+
2 Modular I/O: terminals C- and C
3 HART
® communicator