KROHNE OPTISONIC 7300 EN - Manual (Page 47)

ELECTRICAL CONNECTIONS
4
47
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
Control input passive, modular I/Os
• 3 V ≤ U
ext
≤ 32 VDC
• I
max
= 9.5 mA at U
ext
≤ 24 V
I
max
= 9.5 mA at U
ext
≤ 32 V
• Switching point for identifying "contact open or closed":
Contact open (off): U
0
≤ 2.5 V with I
nom
= 1.9 mA
Contact closed (on): U
0
≥ 3 V with I
nom
= 1.9 mA
• X designates the connection terminals A or B, depending on the version of the signal
converter.
Control input active C
N
NAMUR, modular I/Os
• Connection acc. to EN 60947-5-6
• Switching point for identifying "contact open or closed":
Contact open (off): U
0, nom
= 6.3 V with I
nom
< 1.9 mA
Contact closed (on): U
0, nom
= 6.3 V with I
nom
> 1.9 mA
• Detection of cable break:
U
0
≥ 8.1 V with I ≤ 0.1 mA
• Detection of cable short circuit:
U
0
≤ 1.2 V with I ≥ 6.7 mA
• X designates the connection terminals A or B, depending on the version of the signal
converter.
Figure 4-20: Control input passive C
p
1 Signal
CAUTION!
Observe connection polarity.
Figure 4-21: Control input active C
N
to NAMUR EN 60947-5-6