KROHNE IFC 110 Converter EN - Manual (Page 19)

05/2003 IFC 110 F 19
2.6 Connection diagrams of outputs and inputs
IMPORTANT!
For EEx versions, also pay regard to all directions included in Sect. 6.1 and 13.
Only the EEx flow sensor may be installed in the hazardous area. The EEx
certified signal converter must be installed outside the hazardous area!
Please note ! Unwired
contacts or terminals may not
have any conductive
connection with other
electrically conducting parts.
Interface operation with
HART
®
or RS 485 (Option)
see Sect. 6.4.
I
P, A1*
A1*, A2,
D1, D2
C1, C2
Current output (included HART ® )
Pulse output
Status outputs
Control inputs
Totalizer
-electromechanical (EMC)
- electronic (EC)
milliampmeter
0-20 mA or 4-20 mA and other
Key, N/O contact
External voltage source (U
ext
), DC or AC voltage,
connection polarity arbitrary
DC voltage,
external power source (U
ext
), note connection polarity
*
selectable as
status output A1 or
pulse output A1
Active mode: the IFC 110 F supplies the power required for operating (driving) the receiver
instruments. Observe the max. operating data (terminals E+ and E-).
Passive mode: an external power supply source (Uext) is required for operating (driving) the
receiver instruments.
Groups A / C / D / E / I / P are electrically isolated from each other and from all other input and
output circuits.
Please note:
common reference potential
A ⊥ for A1 and A2
C ⊥ for C1 and C2
D ⊥ for D1 and D2