KROHNE MFC 300 EN - Manual (Page 54)

4
ELECTRICAL CONNECTIONS
54
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
4.10.4 Modular inputs/outputs and bus systems
Current output active (only current output terminals C/C- have HART ® capability),
modular I/Os
• U
int, nom
= 24 VDC
• I ≤ 22 mA
• R
L
≤ 1 kΩ
• X designates the connection terminals A, B or C, depending on the version of the signal
converter.
Current output passive (only current output terminals C/C- have HART ® capability),
modular I/Os
• U
ext
≤ 32 VDC
• I ≤ 22 mA
• U
0
≥ 1.8 V
• R
L, max
= (U
ext
- U
0
) / I
max
• X designates the connection terminals A, B or C, depending on the version of the signal
converter.
CAUTION!
Observe connection polarity.
INFORMATION!
•
For further information on electrical connection refer to Description of the inputs and outputs
on page 42.
• For the electrical connection of bus systems, please refer to the separate documentation for
the respective bus systems.
Figure 4-18: Current output active I
a
Figure 4-19: Current output passive I
p
.book Page 54 Monday, February 6, 2012 11:01 AM