KROHNE OPTISONIC 7300 EN - Manual (Page 46)

4
ELECTRICAL CONNECTIONS
46
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
Status output / limit switch S
N
NAMUR, modular I/Os
• Any connection polarity.
• Connection in conformity with EN 60947-5-6
• open:
I
nom
= 0.6 mA
closed:
I
nom
= 3.8 mA
• The output is open when the device is de-energized.
• X designates the connection terminals A, B or D, depending on the version of the signal
converter.
Control input active, modular I/Os
• U
int
= 24 VDC
• External contact open:
U
0, nom
= 22 V
External contact closed:
I
nom
= 4 mA
• Switching point for identifying "contact open or closed":
Contact open (off): U
0
≤ 10 V with I
nom
= 1.9 mA
Contact closed (on): U
0
≥ 12 V with I
nom
= 1.9 mA
• X designates the connection terminals A or B, depending on the version of the signal
converter.
Figure 4-18: Status output / limit switch S
N
to NAMUR EN 60947-5-6
CAUTION!
Observe connection polarity.
Figure 4-19: Control input active C
a
1 Signal