KROHNE OPTISONIC 7300 EN - Manual (Page 41)

ELECTRICAL CONNECTIONS
4
41
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
4.7.4 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 31
.
• For the electrical connection of bus systems, please refer to the separate documentation for
the respective bus systems.
Figure 4-11: Current output active I
a
Figure 4-12: Current output passive I
p